when given the symbol Cl-37, what is the mass and charge of this symbol?mass is 37 and charge is 37mass is 17 and charge is 37mass is 0 and charge is 0mass is 37 and charge is 17

Cocaine, amphetamines, caffeine, nicotine, and MDMA (ecstasy) have in common that they all increase the activity of the nervous system (Option a).

The expression stimulant drugs is used in biology and medicine to describe chemical substances that speed up the velocity in which messages are transmitted between nerve cells, which is common to caffeine, nicotine cocaine and ecstasy.

Therefore, with this data, we can see that stimulant drugs are able to increase the velocity in which messages are transmitted in the nervous system.

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The student with the correct statement is Arlo.

First, we shall determine the mole of sulphur in the jar. This can be obtained as follow:

Mole = mass / molar

Mole of sulphur = 16 / 32

Mole of sulphur = 1/2 mole

Finally, we shall determine the number of atoms in the jar. This can be obotained as follow:

From Avogadro's hypothesis,

1 mole of sulphur = 6.02×10²³ atoms

Therefore,

1/2 mole of sulphur = 1/2 × 6.02×10²³ atoms

1/2 mole of sulphur = 1/2 × Avogadro's number

Thus, the number of sulphur atom is 1/2 times Avogadro's number

Therefore, Arlo is correct.

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The final pressure of the ideal gas is 23.47 atm.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that

V1 = 120 L

P1 = 18 atm

T1 = 310 K

V2 = 95 L

T2 = 320 K

When the initial and final gas is the same, we can use the ratio of the ideal gas as

(P2 . V2) / (P1 . V1) = T2 / T1

(P2 . 95) / (18 . 120) = 320 / 310

P2 = 23.47 atm

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The best explanation will be that the sample was broken down by the electric current and formed a new substance that could burn. Therefore, the original liquid is a compound.

The utilization of the electric current to break down substances is called electrolysis.

The case displayed is the same as the electrolysis of water: the electrical current breaks down the water (a compound) into the components that frame it: hydrogen (a gas that burns) and oxygen (a gas that does not burn).

The test was broken down by the electric current and shaped into an unused substance that seems to burn. Hence the initial fluid may be a compound.

Bypassing an electric current through a test of clear, colorless, and odorless fluid. As the trial proceeds, bubbles shape, and the volume of fluid diminishes.

As the test proceeds, bubbles shape, and the volume of fluid diminishes. Suna collects tests of two colorless, odorless gasses that bubble out of the fluid. One of the gasses burns. Not one or the other the first fluid nor the other gas burns.

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The molarity of the Vitamin B1 Hydrochloride solution is 0.71M.

We know,

Molarity of a solution is defined as the ratio of the moles of the solute with respect to the volume of the solution in liters.

We know,

Moles = mass of solute dissolved/Molar mass of solute

Given mass of solute is dissolved is 53 grams.

Molar mass of Vitamin B1 Hydrochloride is 337 grams/mol

Moles of Vitamin B1 hydrochloride = 53/337

The volume of the solution is 220 ml.

We know,

1 ml = 1/1000 litres

220 ml = 220/1000 litres

So, putting all the values in the formula of molarity,

Molarity of solution = (53/337)/(220/1000)

Molarity of solution = 0.71

So, the concentration of the Vitamin B1 Hydrochloride is 0.71M.

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The energy that is going to release in Zn-sulfur reaction is 3168.92 kJ.

The chemical equation of the given Zn-sulfur reaction is :

Zn + S →Zn + 205.98 kJ

The molar mass of the zinc is 65 g.

1 mole is equivalent to 65 g of zinc which means the amount of energy released by 1.00 kg zinc is :

1 kg = 1000 g

Now,

205.98/65 g × 1000g

= 3168.92 kJ

The total energy released is 3168.92 kJ.

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Answer:

What is class??

Explanation:

please tell the topic

Option A would be the right recycling program to reduce the number of synthetic materials that enter the local landfill. Hence option A would be the suitable criteria for the specialist's design.

Option A is correct because, with the providence of the knowledge to recycle synthetic materials, there will be less waste accumulation. Hence most synthetic materials can be expected to be recycled.

Option B is wrong because restricting natural materials from entering the field will further increase the use of synthetic materials. Hence there will be more accumulation of waste.

Option C is wrong because making the residents travel long distances will be tiresome, and the outcome of disposing of them will be little.

Option D is wrong because synthetic materials are valuable in various manufacturing and widely used in our daily lives. Hence we will lose the potential benefits.

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AConduction

B. Radiation

C. Convection

nswer:

Explanation:

Aufbau states that you must fill the lowest energy orbital 3d before 4s but we fill 4s before 3d because 3d orbitals have slightly more energy than 4s orbitals.

In atomic theory and quantum mechanics, an atomic orbital is a feature describing the location and wave-like conduct of an electron in an atom. This feature may be used to calculate the possibility of locating any electron of an atom in any specific location across the atom's nucleus.

An atomic orbital is a mathematical term in atomic concept and quantum mechanics that describes the location and wavelike behavior of an electron in an atom. Most of the electrons, each with its own spin quantum quantity s, will occupy every one of these orbitals.

Orbital holds electrons that range in an asset called spin. Orbital: A area of space within an atom in which an electron in a given subshell can be found. Any orbital can preserve most of the 2 electrons with contrary spin. the primary shell has one 1s orbital and holds 2 electrons.

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Answer:

A. hydrolysis reaction.

Explanation:

Chemical Reactions.

First, let's review each concept of the group of answer choices:

- hydrolysis: is a reaction in which the net reaction is an organic compound reacting with water to give either two molar equivalents of a single product or more than one product.

- redox: is a type of chemical reaction that involves a transfer of electrons between two species.

- combustion: is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat.

- neutralization: is a reaction that occurs when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

The problem is asking for the reaction that removes a phosphate group from ATP, so let's see the structure of ATP with one phosphate group:

What is enclosed in the red box is the phosphate group.

The reaction that removes this phosphate group represents a rupture of the structure and based on the logic of the definitions of the given concepts, the answer would be that the reaction to remove one phosphate group from ATP is A. hydrolysis reaction. This reaction looks like this:

ATP + water (H2O) -> ADP + Pi,

where ADP is the same molecule of ATP but it has two phosphate groups and Pi is the phosphate group removed.

Answer: It's an Anion

Explanation: It has gained 1 extra electron and so the atom is now a negatively charged ion called an Anion.

A chemical element is uniquely defined by its atoms, which are tiny pieces of matter.

An atom with 12 electrons and 11 protons is an anion.

The smallest component of ordinary matter that makes up a chemical element is an atom. Atoms that are neutral or ionized make up every solid, liquid, gas, and form of plasma. Atoms are incredibly tiny, measuring typically 100 picometers across.

A chemical element is uniquely defined by its atoms, which are tiny pieces of matter. An atom is made up of a central nucleus and one or more negatively charged electrons that orbit it. The positively charged, relatively heavy protons and neutrons that make up the nucleus may be present.

Therefore, the correct answer is option A: an anion.

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Answer:

Explanation:

answer is below

This implies that pH is 1.3566.
[H2PO4-] is same as [H+] and [H3PO4] = 0.4 - 4.4 * 10^-2 = 0.356.

What is pH?
Acids and bases can be measured using a pH scale. The scale has a range of 0 to 14. An indicator called Litmus paper is used to determine whether a substance is an acid or a base. The type of substance being tested is indicated by the colour of the paper, which corresponds to the pH scale's numbers. For instance, vinegar is an acid and has a pH of 2.4. Doctors and scientists typically concur that maintaining a healthy pH balance is important for your overall health. Your diet and beverage choices have an impact on your body's pH level and potential hydrogen content. The concentration of hydrogen ions is measured by pH. On a pH scale, this calculation is based.

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According to the mole concept, there are 0.02 moles in 6.2 g of calcium phosphate.

According to mole concept,mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

In the given problem, number of moles is found out by, mass/molar mass

that is,6.2/310= 0.02 moles.

Hence, there are 0.02 moles in 6.2 g of calcium phosphate.

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1. The number of moles of H in 5 moles of C₂H₄O is 20 moles

2. The number of atoms of H in 5 moles of C₂H₄O is 1.20×10²⁵ atoms

1. How to determine the number of mole

The number of moles of H in 5 moles of C₂H₄O can be obtained as follow:

1 mole of C₂H₄O contains 4 moles of H

Therefore,

5 moles of C₂H₄O will contain = 5 × 4 = 20 moles of H

Thus, the number of moles of H is 20 moles

2. How to determine the number of atoms

We know from the calculation made above that 20 moles of H is present in 5 moles of C₂H₄O. Thus, we can obtain the number of atoms as follow:

From Avogadro's hypothesis,

1 mole of H = 6.02×10²³ atoms

Therefore,

20 moles of H = (20 moles × 6.02×10²³ atoms) / 1 mole

20 moles of H = 1.20×10²⁵ atoms

Thus, the number of atoms of H present is 1.20×10²⁵ atoms

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Answer:

coal

Explanation:

After calculating the percent error and rounding it to two decimal places, the result obtained is 18.20%.

To calculate the percent error we need to calculate the absolute error first. This is done by subtracting the actual value (1000 mg) from the measured value (0.818 g = 818 mg):

818 mg - 1000 mg = -182 mg

We then divide the absolute value of that difference (182 mg) by the actual value (1000 mg).

182 mg / 1000 mg = 0.182

This result is then multiplied by 100 percent and rounded to two decimal places:

0.182 * 100% = 18.20%

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The concentration on diluting the solution by student is 1 M.

The concentration and volume are related to each other as - [tex] M_{1}[/tex] [tex] V_{1}[/tex] = [tex] M_{2}[/tex] [tex] V_{2}[/tex], where [tex] M_{1}[/tex] and [tex] M_{2}[/tex] are initial and final molarity and [tex] V_{1}[/tex] and [tex] V_{2}[/tex] are initial and final volume.

[tex] M_{1}[/tex] is 10.1 M, [tex] V_{1}[/tex] is 12.4 milliliters, [tex] M_{2}[/tex] is to be calculated and [tex] V_{2}[/tex] is 125 milliliters.

Keep the values in formula to find the value of [tex] M_{2}[/tex].

10.1×12.4 = [tex] M_{2}[/tex]×125

[tex] M_{2}[/tex] = 125.24 ÷ 125

Performing division on Right Hand Side of the equation

[tex] M_{2}[/tex] = 1.00192 M or 1 M.

Thus, the concentration of diluted solution is 1 M.

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20th century was expected to have the largest simulated temperature from the gas chromatography mass spectrometry.

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All of the elements in the group located in Family VIIIA of the periodic table are highly unreactive.

The elements of Family VIIIA are also known as noble gas elements. Noble gases are low chemically reactive, odorless, colorless, nonflammable, and monotonic gases.

These elements have very little ability to gain or lose electrons to form ions or share electrons with other elements in covalent bonds because they contain a full octet of eight valence electrons in their highest-energy orbitals (ns2np6). That is why they are exceedingly stable and unlikely to form chemical connections.

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Energy transfers between particles when they collide.

When the particles collide they vibrate and energy get transferred between the particles. The particles that made matter are in constant motion and have high kinetic energy. kinetic energy is equal to heat. Energy is the ability to do work. When energy moves from one place to another place we can say that energy is transferred . so in case of particle s, particles are in continuous motion and colloid with each other and when the particles collide with each other the energy transfer between particles takes place.

Thus, Energy transfers between particles when they collide.

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At standard temperature and pressure, the number of gaseous molecules that the flask contains is equal to 1.2098 × 10^23.

According to the given data, the volume of the flask is equal to 4.50 L.

As the volume occupied by one mole of any gas at standard temperature and pressure is 22.4 liters, therefore the number of moles in the flask can be calculated as follows;

n = 4.5 ÷ 22.4

n = 0.2009

As one mole is equal to 6.02 × 10^23 units

The number of gaseous molecules in the flask can be calculated as follows;

0.2009 × ( 6.02 × 10^23 ) = 1.2098 × 10^23

Hence, the number of gaseous molecules in the flask is calculated to be 1.2098 × 10^23.

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To find the number of molecules we must apply for Avogadro's number. This number tells us that in one mole of any substance there are 6.022x10^23 molecules. So the first thing we will do is find the moles contained in 200 grams of C6H12O6 (Glucose).

The molar mass of glucose is 180.06g/mol. So, the moles of glucose will be:

Now, we apply for Avogadro's number. So, the molecules of glucose will be:

Answer: In 200 grams of C6H12O6 there are 6.68x10^23 molecules

The quantity of Cu deposited at the cathode will be 7.117 grams.

Given,

Current (in Amperes) = 12 A

This will be equal to 12 C/s (in coulombs per second).

Therefore the total charge in 30 minutes will be:

Q = 12C/s × 30 min × 60 seconds/minute

=> Q = 21600 C

Now, the number of moles of copper which are plated out (n) will be :

n = Q / z·F

In the half-cell reaction,

the number of electrons ( for Cu ) will be = 2 (Cu 2+)

F, the Faraday's constant = 96,485 per mole

We have already discussed that,

n = Q / z.F

=> n = 21600 / (2×96485)

=> n = 0.112 mol

So, 0.112 mol of Cu will be equal to:
0.112×63.546 = 7.117 g

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Glyceryl tributyrate will react with 3 mol of water and form a glycerol and 3 mol of carboxylic acid.

The effects of using a pair of large balloons

Number 4=Tetrahedral,normally= 109.5

Number 5: Triangular bipyramidal,normally= 120 and 90

Number 6: Octahedral, normally= 90

The binding angles wouldn't be the same. The figures are distorted because there are balloons of various sizes. It resembles how a triangle's side changes in size. The angles (60) are equal while all the sides are the same length, but when a side length (or, in this example, balloon size) is changed, the uniformity of the angle measurements is messed up.

for

Number 4=Tetrahedral,

normally= 109.5

Number 5: Triangular bipyramid

normally= 120 and 90

Number 6: Octahedral

normally= 90

due to the fact that helium molecules are substantially smaller than the nitrogen and oxygen molecules that make up the majority of the air. As a result, helium will leak through connections and seals considerably more quickly than usual, as well as through the rubber used to produce ordinary balloons. It struggles to pass through mylar balloons that have been aluminized.

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The percent composition of (NH₄)₂CO₃ is 99.999 % ≈ 100 %.

To calculate percent composition of the elements in a compound,

the molar mass of element is divided by the molar mass of the compound and then, it is multiplied by 100.

We know that,

Molar mass of (NH₄)₂CO₃ is 96.086 g/mol.

Molar mass of each element of compound is-

Nitrogen = 2 × 14.007 g/mol = 28.014 g/mol

Hydrogen = 8 × 1.008 g/mol = 8.064 g/mol

Carbon = 1 × 12.011 g/mol = 12.011 g/mol

Oxygen = 3 × 15.999 g/mol = 47.997 g/mol

Now,

We will calculate the percent composition -

% composition of nitrogen = 28.014 g/mol × 100 = 29.155%

                                               96.086 g/mol

% composition of hydrogen = 8.064 g/mol × 100 = 8.392%

                                                96.086 g/mol

% composition of carbon = 12.011 g/mol × 100 = 12.500%

                                            96.086 g/mol

% composition of oxygen = 47.997 g/mol × 100 = 49.952 %

                                             96.086 g/mol

We will add the percentage to calculate % composition of (NH₄)₂CO₃ -

29.155 % + 8.392 % + 12.500 % + 49.952 % = 99.999% ≈ 100 %

Therefore, % composition is 99.999 % ≈ 100 %

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If the rate of reaction increases by a factor of 9.6 when the concentration of reactant increases by a factor of 3.1 then order of the reaction with respect to this reactant is  1/3

Rate of reaction is the speed at which a chemical reaction proceeds

Here given data is

Rate of reaction = 9.6

Concentration of reactant  = 3.1

We have to calculate order of the reaction = ?

So we can write

R = K[C]ⁿ

Where R is the reaction rate and K is a constant

Here C is the concentration of the reactant

rate of reaction increases by a factor of 9.6 when the concentration of reactant increases by a factor of 3.1 then

9.6 = K× [3.1]ⁿ

Dividing this equation we get

1/9.6 = 1/3.1ⁿ

3n = 1

n = 1/3

Then the order of the reaction with respect to this reactant is 1/3

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