ethambutol is a chiral drug used to treat tuberculosis. determine the number of chiral centers and the number of possible stereoisomers. there are two chiral centers in this molecule. calculate how many stereoisomers of this structure are possible.

Answers

Answer 1

There are two chiral centers in the ethambutol molecule, but only three possible stereoisomers (structures attached below).

In general, the number of stereoisomers of a chiral molecule is 2ⁿ, where n is the number of chiral centers, so for ethambutol it should be 2² = 4. However, if the molecule is symmetrical (in this case it has a plane of symmetry), then there is an R,S-isomer that is not optically active as a whole because the chiral centers cancel each other out. This is a so-called meso-isomer. So, in the end, we have two enantiomers (R,R- and S,S-) and a meso-isomer, giving us three stereoisomers in total.

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Ethambutol Is A Chiral Drug Used To Treat Tuberculosis. Determine The Number Of Chiral Centers And The

Related Questions

problems of using ionic compound and covalent compound in domestic​

Answers

Answer:

Problems of Using Ionic and Covalent Compounds in Medicine

Stomach pain.

Nausea.

Vomiting.

Heartburn.

Gas.

Constipation.

Diarrhea.

Please help How many moles of a gas sample are in 5.0 L container at 215 K and 342 kPa(The gas constant is 8.31 L kPa/mol K) Round your answer to one decimal place and enter the number only with no units.

Answers

Answer

1.0 mol

Explanation

Given:

Volume, V = 5.0 L

Temperature, T = 215 K

Pressure, P = 342 kPa

The gas constant, R = 8.31 L kPa/mol K

What to find:

The number of moles of the gas sample.

Step-step-solution:

The number of moles of the gas can be determine using the ideal gas equation formula:

[tex]PV=nRT[/tex]

Put the given values into the formula and calculate for n:

[tex]\begin{gathered} 342\times5.0=n\times8.31\times215 \\ 1710=1786.65n \\ \text{Divide both sides by 1786.65} \\ \frac{1710}{1786.65}=\frac{1786.65n}{1786.65} \\ n=0.9571\text{ mol} \\ To\text{ one decimal place,} \\ n=1.0\text{ mol} \end{gathered}[/tex]

The number of moles of the gas sample is 1.0 mol.

calculate the vapor pressure of a solution of 0.300 mol fraction of toluene and 0.700 mol fraction of cyclohexane at 32oc and determine whether the solution will boil. the vapor pressure of pure toluene is 40.2 torr and that of cyclohexane is 125 torr at 32oc

Answers

The Vapour pressure of the solution is 99.56 torr

The saturated vapour pressure of the solution maybe lower then the pressure of pure solvent in solution. It is equal to the vapour pressure of the pure solvent at the same temperature scaled by mole fraction of solvent stated by Rault's Law.  

P(solution) = mol fraction of solvent × P° ( solvent)

given, pressure of pure toulene = 40.2 torr

pressure of pure cyclohexane = 125 torr

∴ P (solution) = 0.3 × 40.2 + 0.7 × 125

P (solution) = 99.56 torr

hence, vapour pressure is calculated to be 99.56 torr.

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why there is only one sodium ion for every chlorine ion, while there are two potassium ions for every oxygen ion?

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There is only one sodium ion for every chlorine ion due to its valency.

The number of electrons that an atom needs to lose or gain in order to achieve a stable electron configuration i.e the octet of an element is known as the valency of an element, which serves as a gauge of that element's potential for combining.

The valency of Sodium (Na) is 1 and that of chlorine (Cl) is also one. therefore they combine to form a stable compound. The same rule follows in the compound formed by Potassium (K) and Oxygen(O) also. The valency of oxygen is 2 which means that it should be surrounded by 2 potassium ions to provide electrons to fulfill both the elements' octets.

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a 1.80 m solution of nitrous acid is prepared. find the percent ionization. a second solution is prepared in the same manner except the solution also contains 0.71 m potassium nitrite. find the percent ionization. how much did the percent ionization decrease with the addition of the common nitrite ion?

Answers

The percent ionization in the nitrous acid solution is 1.97% before, and 0.0999% after the addition of sodium nitrate, which lowered the ionization 19.7 times.

To calculate percent ionization, we need to use the expression for the acidity constant of nitrous acid:

[tex]Ka = \frac{[H^{+} ][NO_{2} ^{-} ]}{[HNO_{2} ]}[/tex]

Ka - acidity constant (for nitrous acid, 7.1 * 10⁻⁴)

[H⁺] - concentration of H⁺ ions

[NO₂⁻] - concentration of nitrite ions

[HNO₂] - concentration of unionized nitrous acid

[H⁺] = [NO₂⁻]

[HNO₂] = 1.80 M - X

[tex]7.1 * 10^{-4} = \frac{X^{2} }{1.80 - X}[/tex]

When we transform the equation above, we get a quadratic equation:

X² + 7.1 * 10⁻⁴X - 12.78 * 10⁻⁴ = 0

Once we solve for X, we get:

X = 0.0354 M

Because the concentration of H⁺ ions (X) is equal to the concentration of the ionized nitrous acid, the percent ionization will be:

%ion = 100% * X / 1.80 M

%ion = 100% * 0.0354 M / 1.80 M

%ion = 1.97%

The second calculation is actually easier because we can safely assume that, with added sodium nitrite, all nitrite ions come from the salt, and the amount coming from the acid is negligible. With that in mind, the expression for the acidity constant will look like this:

[tex]7.1 * 10^{-4} = \frac{X * 0.71 }{1.80 M - X}[/tex]

When rearranged, we get this equation:

0.71 * X = 12.78 * 10⁻⁴ M - 7.1 * 10⁻⁴X

0.71071 X = 12.78 * 10⁻⁴ M

X = 12.78 * 10⁻⁴ M / 0.71071

X = 0.001798 M

%ion = 100% * 0.001798 M / 1.80 M

%ion = 0.0999%

So the addition of sodium nitrite resulted in 1.97 / 0.0999 = 19.7 times lower ionization of the nitrous acid.

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do eukaryotic Cells have DNA found in the nucleus. True or false​

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the answer is true, they do have dna found in the nucleus

Sodium and lithium have similar chemical properties. What characteristics of these elements explain why they are chemically similar?.

Answers

Sodium and lithium have similar chemical properties because both sodium and lithium have one valence electron

Chemical properties is the characteristics of particular substances that can be observed in a chemical reaction and the valence shell electrons in an atom determine the way it will interact with neighboring atoms and therefore determine its chemical properties and both sodium and lithium have one valence electron they share similar chemical properties and element sodium and lithium belong to group IA of the periodic table and the main characteristics is the a single electron in their outermost shell

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5. What percent of CuCl₂ is Cu?

Answers

Answer: The mass percent of copper in copper chloride is 47.23 %.

N₂(g) + 3H₂(g) 2NH₂(g)

(iv) Name the catalyst used in this industrial process.

Answers

Answer:

I catalyst promoter is the answer

What is the mass of calcium oxide produced in the reaction?

Answers

Answer:

From the reaction stoichiometry, 2 moles of Ca produces 2 moles of CaO. Thus, the number of moles of Ca is the same as that of CaO. Therefore, n = 0.16892 mol for CaO. Hence, 9.47 grams of calcium oxide are produced.

in part 2 of the experiment, you will be analyzing a sample of household bleach. a 0.0854 g sample of household bleach is completely reacted with ki(s). the resulting solution is then titrated with 0.150 m nas2o3 solution. 0.890 ml of the solution is required to reach the colorless endpoint. what is the mass percent of naocl (mm

Answers

There is  5.8 %  of NaOCl in the sample.

The oxidation of hypochlorite is the first process, which goes as follows:

OCl^- + 2I^- + 2H^+ -----> I2 + Cl2 + H2O

Iodine and sodium thiosulfate react in the second stage as follows:

I2 + 2NaS2O3 -----> Na2S4O6 + 2NaI

Thiosulfate moles = 0.150 M * 0.890/1000 L = 1.335 * 10-4 moles.

Since 2 molecules of thiosulfate react with 1 mole of I2,

1.335 * 10-4 moles of thiosulfate and x moles of I2 react.

x = 1.335 * 10-4 moles/2 moles times one mole.

Iodine equivalent to 6.675 x 10-5 moles

6.675 * 10-5 moles of hypochlorite were reacted because 1 mole of hypochlorite yields 1 mole of iodine.

Therefore, the mass of NaOCl is equal to 4.97 * 10-3 g (6.675 * 10-5 moles * 74.44 g/mole).

5.8% of NaOCl is equal to 4.97 * 10-3 g/0.0854 g * 100/1.

NaOCl makes up 5.8% of the sample.

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phenylacetic acid (c6h5ch2cooh) builds up in the blood of phenylketonurics. when left untreated, this can lead to intellectual disability, seizures, behavioral problems, and even death. a 0.12 m solution has a ph of 2.62. what is the ka of phenylacetic acid?

Answers

The [tex]K_{a}[/tex] of phenylacetic acid is  4.76008×[tex]10^{-5}[/tex], when the pH of the solution is 2.62.

As we know,

pH = -log[[tex]H^{+}[/tex]]

[[tex]H^{+}[/tex]] = [tex]10^{-pH}[/tex]

[[tex]H^{+}[/tex]] = [tex]10^{-2.62}[/tex]

[[tex]H^{+}[/tex]] = 2.39×[tex]10^{-3}[/tex]

Also to find [tex]K_{a}[/tex] of phenylacetic acid we know another relation as:

[[tex]H^{+}[/tex]] = [tex]\sqrt{K_{a} .c}[/tex]

2.39×[tex]10^{-3}[/tex] =  [tex]\sqrt{K_{a} .0.12}[/tex]

[tex]K_{a}[/tex] = 4.76008×[tex]10^{-5}[/tex]

Therefore, the [tex]K_{a}[/tex] of phenylacetic acid is  4.76008×[tex]10^{-5}[/tex], when the pH of the solution is 2.62.

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coal-based power plants have a carbon dioxide emission of around 1,000 gco2eq/kwh. large scale hydropower plants have a carbon dioxide emission of around 30 gco2eq/kwh. rutgers university average power requirements is 20mw. what is the monthly (30 days) carbon dioxide emission reduction if the source of electricity is hydropower plant instead of coal-based generation?

Answers

In Niger State, Nigeria, there is a deposit of clay similar to kaolin that has a lot of promise for use in pollution control processes including wastewater treatment.

This study looks into the ideal settings for Kpautagi clay modification for use in treating the effluent from refineries. The clay was modified using sulphuric acid, and the modification factors taken into account were acid concentration, activation time, and temperature.

The sulphuric acid-modified Kpautagi clay was used in the treatment of refinery wastewater in column mode at a fixed flow rate and mass of adsorbent to establish the best conditions for the modification variables.

The results show that 4M acid concentration, 120min of activation time, and 100°C activation temperature are the best conditions for modifying Kpautagi clay for use in the treatment of petroleum refinery wastewater.

As a result, the best conditions discovered in this work for Kpautagi clay modification could be used to treat wastewater from petroleum refineries more effectively.

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a certain hydrocarbon is found to have the percent composition (by mass) of 92.3% c. the molecular formula contains 6 carbon atoms. how many hydrogen atoms are contained in a molecular of this compound?

Answers

The number of atoms of hydrogen contained in the molecular formula of the compound is 6 atoms

How to determine the number of atoms

We'll begin by obtaining the formula of the compound. This can be obtained as follow:

C = 92.3%H = 100 - 92.3 = 7.7%Empirical formula =?

Divide by their molar mass

C = 92.3 / 12 = 7.7

H = 7.7 / 1 = 7.7

Divide by the smallest

C = 7.7 / 7.7 = 1

H = 7.7 / 7.7 = 1

Thus, the empirical formula of the compound is CH

Finally, we shall determin the number of atoms of hydrogen present in the compound. This can obtained as follow:

When 1 atom of carbon was present, 1 atom of hydrogen was also present.

Therefore,

When 6 atoms of carbon is present, then 6 atoms of hydrogen are also present.

Thus, we can conclude that the number of atoms of hydrogen is 6 atoms

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how does water help macromolecules carry out their functions

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Water serves as a reaction reagent or mediates ligand–protein and protein–protein interactions. Water molecules are small enough to penetrate a macromolecule's core, to stabilise its native structure and also to participate in processes occurring in the protein's core

how does the specific heat capacity of water compare with the specific heat capacities of other common materials? how does the specific heat capacity of water compare with the specific heat capacities of other common materials? the specific heat capacity of water is very low in comparison with other common materials. the specific heat capacities of water and other common materials are approximately the same. the specific heat capacity of water is very high in comparison with other common materials.

Answers

Liquid water has one of the highest specific heat capacities among common substances, about 4184 J⋅kg−1⋅K−1 at 20 °C; but that of ice, just below 0 °C, is only 2093 J⋅kg−1⋅K−1. The specific heat capacities of iron, granite, and hydrogen gas are about 449 J⋅kg−1⋅K−1, 790 J⋅kg−1⋅K−1, and 14300 J⋅kg−1⋅K−1, respectively.

The amount of heat required to increase the temperature of 1 gram of a substance by 1 degree Celsius (°C) is known as specific heat. Since water has a higher specific heat than other substances, it requires more energy to raise its temperature.

The heat capacity of a sample of a substance is divided by the mass of the sample to produce the specific heat capacity (symbol cp), also known as massif heat capacity. Informally, it is the quantity of heat that must be added to one unit of a substance's mass in order to raise its temperature by one unit. joule per kelvin per kilogram is the specific heat capacity unit in the SI.

A substance's specific heat capacity may be substantially higher when heated in an open vessel that permits expansion than when heated in a closed vessel that prevents expansion, especially when the substance is a gas (specific heat capacity at constant pressure) (specific heat capacity at constant volume).

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substances like xenon , which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. at a pressure of , does not condense to a liquid until and does not freeze until . what are the equivalent absolute temperatures? to condense: k

Answers

The equivalent absolute temperature when it condenses will be 27.25K. and freezes at 24.65K.

To find equivalent absolute temperatures we have to use the following equation:

0°C + 273.15 = 273.15K

The main idea is to convert degree Celsius to Kelvin.

In this manner, we are going make utilize of the over condition and space within the values for at degree Celsius at which it condenses and at degree Celsius at which it solidifies.

So, the temperature at which it condenses:

-245.9°C + 273.15 = 27.25K.

Also, the temperature at which it freezes.

-248.5°C + 273.15 = 24.65K.

Absolute temperature is utilized in the application of the perfect gas law and numerous other laws of thermodynamics.

A scale for outright temperature with degree units the same as on the Celsius scale is known as the Kelvin scale; the temperature scale utilizing Fahrenheit degree units is the Rankine scale.

Appropriately, a temperature distinction of one degree on the Celsius scale compares to a temperature contrast of one degree on the Kelvin scale; additionally for the Fahrenheit and Rankine scales.

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Although part of your question is missing, you might be referring to this full question:

Substances like neon, which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. At a pressure of 1 atm, Ne does not condense to a liquid until -245.9°C and does not freeze until -248.5°C. What are the equivalent absolute temperatures?

To condense: __K

To freeze: __ K

PLEASE SOMEONE HELP EXPLAIN THIS IT’S DUE FIRST THING TMRW MORNING!!

Determine the empirical formula of a 28.00 gram sample containing 22.90 grams carbon and 5.10 grams hydrogen.

Answers

If a 28.00 gram sample containing 22.90 grams carbon and 5.10 grams hydrogen , then the empirical formula is CH3 .

What is empirical formula ?

The empirical formula, which is defined as the ratio of subscripts of the least whole number of the elements present in the formula, is the simplest formula for a compound. The simplest formula is another name for it.

The formula of a material expressed with the smallest integer subscript is referred to as an empirical formula for a compound.

The empirical formula provides details regarding the ratio of atom counts in the molecule. A compound's % composition directly determines its empirical formula.

Given ,

the mass of the sample of hydrogen and oxygen is 28g .

the mass of carbon in that sample is 22.9g

the mass of hydrogen in that sample is 5.1g

We know ,

the molecular mass of carbon is 12g

thus , 12g of carbon contains 1 mol

22.9g of carbon contains 22.9/12 = 1.9mol

the molecular mass of hydrogen is 1g

1g of hydrogen contains 1mol

5.1g of hydrogen contains 5.1mol

now , the mole ratio of carbon to hydrogen is

= C:H = 1.9/5.1 = 0.37 = 1:3

Hence , the empirical formula is CH3 .

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Facts for Globalization?

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Answer:

Globalization has many benefits, such as the increased flow of goods, services, capital, and people across borders. This has resulted in increased trade and investment, which has led to higher economic growth rates and improved standards of living around the world.

Explanation:

have a good day

What type of evidence can be pulled from both a computer and a portable device?
O Images
O Text history
O GPS coordinates
O Phone call data

Answers

Type of evidence can be pulled from both a computer and a portable device is images, text history, GPS coordinates

Computer is the machine that can store and process the information and it is an electronic device that manipulate information or data and type of  evidence can be pulled and collected from digital device is

Computer documentsEmailsText and instant messages,TransactionsImagesInternet histories

The above all examples of information that can obtained from electric devices

Therefore, the digital evidence can be pulled from both a computer and a portable device is  images, text history, GPS coordinates

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How do scientists predict the polarity of molecules?

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When a molecule lacks polar bonds, there is no permanent charge difference between parts of the molecule, and the molecule is nonpolar.

Because the electron charge on both atoms is identical, the Cl2 molecule has no polar bonds. As a result, it is a nonpolar molecule. Hydrocarbons are nonpolar molecular substances because none of the bonds in hydrocarbon molecules, such as hexane, C6H14, are significantly polar.

The molecule is nonpolar if the arrangement is symmetrical and the arrows are of equal length. The molecule is polar if the arrows are of different lengths and do not balance each other. The molecule is polar if the arrangement is asymmetrical.

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Convert 11.75 millimeters to meters.

Answers

Answer: 0.01175

Explanation:

How many electron clouds does an element with 29 protons have?

Answers

Answer:

5, the last would be incomplete

Explanation:

The first, inner cloud has 2 electrons, then 8, then 8, then 8, then 3.

express Sb in a condensed form in order of increasing orbital energy

Answers

The condensed form of Sb in order of increasing orbital energy is [Kr] 5s² 4d¹⁰ 5p³

Sb (Antimony) is a metalloid with atomic number 51. The electronic configuration of antimony is 1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰5s²p³

As you can see, the normal notation of electronic configuration is lengthy. Condensed or abbreviated form of the configuration would be preferred to normal lengthy electronic configuration for representation.

In condensed form, in place of completely filled subshells with configuration that is similar to noble gas is represented by the symbol of that particular inert gas / noble gas. The symbol would be represented inside square brackets.

The electronic configuration of Krypton, a noble gas is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶.

Therefore, Sb can be expressed in condensed form as [Kr] 5s² 4d¹⁰ 5p³. As observed, 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ in Sb is expressed as Kr followed by the remaining electronic configuration in Sb in order of increasing orbital energy.

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2. a. In general, how do the periodic properties of
the d-block elements compare with those of
the main-group elements?
b. Explain the comparison made in (a).​​
3. For each main-group element, what is the
relationship between its group number and
the number of valence electrons that the group
members have?

I will give Brainkist

Answers

The d  block elements differ from the main group elements in the nature of the ions that they form. Also, the group number is related to the number of electrons in the valence sell of an atom.

What are the d block elements?

The D block elements are those elements that are found to have d orbitals as the orbitals that has the highest energy in the atom. The d block elements are called the transition metals and they have an incompletely filled d - level.

Owing to the fact that d - level is incompletely filled they do exhibit variable oxidation states and are colored. On the other hand, the main group elements do not exhibit a variable oxidation states and the ions that they form are not colored.

Secondly, for each of the main group elements, the group number shows the number of valence electrons that are present in the outermost shell of the atoms in the elements of the groups.

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Measuring Liquid Volume Pre-Lab worksheet

Answers

1. The longer distance for each choice is:

1 mile1 meter1 inch

2. The complete statements are as follows;

1 mi = 1.6 km1 yd = 0.9444 m1 in = 2.54 cm

3. The basic unit of length in the metric system is the meter and is represented by a lowercase m.

4. The meter is defined as the distance traveled by light in absolute vacuum in 1⁄299,792,458 of a second.

5. The values that complete each statement is given below:

1 km = 1000 m1 m = 100 cm1 m = 1000 mm

6. The larger value for each option is:

A. 105 centimetersB. 4400 metersC. 12 centimetersD. 1200 millimeters

7. The number of millimeters in 1 centimeter is 10 mm

8. Using the ruler and line, the answers are:

2.8 cm29 mm3 cm

What is the unit for measuring distance in the metric system?

The unit for measuring distance in the metric system is the meter. Smaller and larger values of the meter are also used such as millimeters, centimeters, kilometers, etc.

Other units for measuring distance include yards, miles, and inches.

The various units for measuring distance can also be interconverted using their conversion factors.

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1. State the general period and group trends among
main-group elements with respect to each of the
following properties:
a. atomic radii
b. first ionization energy
c. electron affinity
d. ionic radii
e. electronegativity

Answers

The general period and group trends among the main-group elements with respect to each of the following properties are as follows:

atomic radii - increase down the group; decrease across a periodfirst ionization energy - decrease down the group; increase across a periodelectron affinity - decrease down the group; increase across a periodionic radii - increase down the group; decrease across a periodelectronegativity - decrease down the group; increase across a period

What are periodic trends?

Periodic trends are the trends followed by the properties of the elements going down a group or across a period in the periodic table.

The properties of elements that show periodic trends include:

a. atomic radii - the size of an atom of an element

b. first ionization energy - the energy required to remove a valence electron

c. electron affinity - the energy required to add an electron to a neutral atom

d. ionic radii - the size of the ion of an element

e. electronegativity - the ability to attract electrons

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which of the following is true about all spontaneous processes? a) it releases energy as heat. b) it will occur quickly. c) it will continue on its own once begun. d) it is never endothermic.

Answers

C) It will continue on its own once begun is true for spontaneous processes.

What is spontaneous process?A spontaneous process is one that takes place without the system receiving any outside input. The system which releases free energy and transitions to a lower, more thermodynamically stable energy state is a more technical definition.The sign convention for changes in free energy is as follows: a release of free energy from the system corresponds to a negative change in the system's free energy and a positive change in the surrounding free energy.Spontaneous processes do not require an external energy source because they are known to be characterized by a decrease in the system's free energy.Spontaneous processes are characterized by a rise in entropy in isolated systems when no energy is exchanged with the environment.Chemical reactions that occur spontaneously in the context of interest are referred to as spontaneous reactions.

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It is easier to separate liquids that have boiling points within a range of 5 degrees than it is liquids that have boiling points within a range of 10 degrees true or false?.

Answers

The given statement exists as false. The temperature at which a liquid's vapor pressure equals the pressure of the gas above it exists comprehended as the boiling point of the liquid.

What is meant by boiling point?

The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid transforms into a vapor is known as the boiling point of a substance. A liquid's boiling point varies depending on the atmospheric pressure in the area.

The temperature at which a liquid's vapor pressure equals the pressure of the gas above it exists comprehended as the boiling point of the liquid. The temperature at which a liquid's vapor pressure equals one atmosphere is considered the liquid's typical boiling point (760 torr).

The element with the lowest temperature at which an element would smolder is helium, and the element with the highest temperature is tungsten. The melting point is measured in degrees Celsius (C).

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- Lead acid batteries used in cars contain a concentrated
solution of sulfuric acid. When these batteries are
recycled, their sulfuric acid is drained and neutralized to
produce water and sodium sulfate. Suggest a compound
that could be used to neutralize sulfuric acid and produce
sodium sulfate. Justify your choice by writing the chemical
equation for the reaction.

Answers

As per the chemical reaction ,sodium hydroxide can be used for neutralization of sulfuric acid as,2 NaOH+H₂SO₄[tex]\rightarrow[/tex]Na₂SO₄ +2 H₂O.

What are chemical reactions?

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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Can someone please help solve the attached :) it's on simultaneous equations combined with congruent triangles 247474647447x4747474747 2.) Part A: complete the following table for the functions which force is used when a rock fell a^2 - b^4 Evaluate is a= -5 and b= 2 The padlock for your gym locker uses a 3 number sequence to open the lock. If the numbers go from 1 to 27, how many different sequences are there on the dial without repeating a number?A. 17,550B. 33,696C. 16,848D. 8,775 8. true or false Thurgood Marshall became the first African American president of the United States. What is controversial about the Gulf of Tonkin incident? A. Whether any outside parties were involved B. Whether or not the attack actually happened C. The reason why the ships were in that location The chemical equation for the combustion of ethanol is as follows:C2HyOH + 302 - 2002 + 3H20 Many changes happen in Okonksos village and the surrounding areas. Imagine that you are a member of the village, and that you, as a young member of the village, want to institute yet another change.Your assignment is to think of a change you would make in the daily life/customs of the village. Outline the ideas that you would present to the egwugwu to persuade them to approve of your idea.You should not only share your ideas, but you should also give reasons for why these changes are a good idea. Melissa wants to rent a boat and spend at most $38. The boat costs $6 per hour, and Melissa has a discount coupon for $4 off. What are the possible numbers of hours Melissa could rent the boat?Use t for the number of hours.Write your answer as an inequality solved for t. Which of these ordered pairs is NOT a solution to this system A constant force is used to punch a box along the floor a distance of 3 meters by applying 300j what is the magnitude of force? ______ is the change in total utility that results from the consumption of one more unit of a product. 2. What might William Wordsworth have meantwhen he wrote "Our meddling intellect Your weekly base salary is $150. You earn $20 for each cell phone thatyou sell.a. What is the minimum amount you can earn in a week?b. Write and solve an inequality that represents the number of cell phonesyou must sell to make at least $630 a week.c. Write and solve an inequality that represents the number of cell phonesyou must sell to make at least $750 a week.d. The company policy is that as a part-time employee, the maximumyou can earn each week is $950. Write and solve an inequality thatrepresents the number of cell phones you can sell each week. a square loop of wire with initial side length 20 cm is placed in a magnetic field of strength 0.5 t. the field is parallel to the axis of the loop. somebody carefully grabs the edges of the loop and begins pulling them apart such that the area of the loop increases at a rate of 20 cm2/s. what is the magnitude of the induced emf in the loop? Jodie is an event planner who believeseach person requires 3.75 feet ofpersonal space at her events. Her nextevent will be at a venue that measures40 feet by 75 feet. How many peopleshould she include on the guest list? What is 11.75 millimeters in meters NEED ASAP ILL GIVE BRAINLIEST IF CORRECT