The fundamental driving force behind the transition of planetesimal to full-fledged planets is gravity.
How far away from nuclear fusion are we?The quest has advanced significantly, but there is still plenty to do. It will need more time and money to develop an industrial fusion reactor, which is still several decades away. Fusion isn't always the sustainable technology of the future; that will be solar, wind, plus nuclear fission. However, it is the technology of the future.
Can the sun continue to undergo nuclear fusion?When light elements as hydrogen combine to create atoms like helium, nuclear fusion takes place. The Sun will run out of hydrogen in its core and lack sufficient material for nuclear fusion in around 5 billion years.
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According to this passage what can we calculate about cleavage 
Passage in photo and answers in photo !
Answer:
E. Cleavage of diamonds is a random property and differs from stone to stone.
Answer the following questions about the proton. Location in atom In the nucleus Charge elementary charge Approximate Mass 1.0073 amu Evaluate At least one answer is incorrect
The location in atom : In the nucleus
The Charge : + 1 elementary charge
The Approximate Mass = 1.0073 amu
The nucleus of an atom contains the protons, electrons and the neutrons. The Protons are the positively charged species, the electrons are negatively charged species and the neutrons have no charge means it is neutral. For the neutral atom the number of the protons is equals to the number of the electrons. The approximate mass of the proton is 1.0073 amu.
Thus, The Protons location is inside nucleus of an atom , the proton has the elementary charge of + 1. The approx mass is the 1.0073 amu.
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for the following chair conformations of 1,3-dibromocyclohexane, determine the orientations of the two substituents, and determine if the conformation is cis or trans.
The way the bonds are built will determine how they are oriented. Additionally, the relative orientation of bonds affects conformation. Dibromocyclohexane is used to study the conformation.
How can you tell whether a molecule is chiral or not?Having a few very notable exceptions, the general rule is that molecules with at least one stereocenter are chiral, while molecules with no stereocenters are achiral. In most circumstances, an easiest approach to determine whether a molecule is chiral or achiral is to seek for one or even more stereocenters.
What does cis in cyclohexane refer to?Two substituent groups inside the same plane are regarded to be the cis isomer of cyclohexane (either equatorial or axial). Cis-1-methyl-4-hydroxymethyl cyclohexane is cyclohexane with a methyl group in the axial plane (-CH3)also the hydroxyl group (-OH).
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How many grams of KCiO3 are needed to make 186.2mol of KCi
Answer:
64.2 L
Explanation:
In order to be able to calculate the volume of oxygen gas produced by this reaction, you need to know the conditions for pressure and temperature.
Since no mention of those conditions was made, I'll assume that the reaction takes place at STP, Standard Temperature, and Pressure.
Under these conditions for pressure and temperature, one mole of any ideal gas occupies 22.7 L
- this is known as the molar volume of a gas at STP.
So, in order to find the volume of oxygen gas at STP, you need to know how many moles of oxygen are produced by this reaction.
The balanced chemical equation for this decomposition reaction looks like this:
2KClO3(s] −−−→2KCl(s]+3O2(g]↑
Notice that you have a 2/3 mole ratio between potassium chlorate and oxygen gas. This tells you that the reaction will always produce 3/2 times more moles of oxygen gas than the number of moles of potassium chlorate that underwent decomposition.
Use potassium chlorate's molar mass to determine how many moles you have in that 231-g sample.
231g ⋅ 1 mole KClO3/ 122.55g = 1.885 moles KClO3
Use the aforementioned mole ratio to determine how many moles of oxygen would be produced from this many moles of potassium chlorate
1.885 moles KClO3 ⋅ 3 moles O2/2 moles KClO3 = 2.8275 moles O2
So, what volume would this many moles occupy at STP?
2.8275 moles ⋅ 22.7 L/ 1mol = 64.2 L
This was alotta info but i hope it helped
Why is there no reaction if you remove mercury oxide,HgO from the reaction?
The reaction stops because the reaction is a decomposition reaction.
What is a reaction?We have to note that there is a reaction when there is change of the reactants that are in the system to the products. We have to note that in this case. we have the decomposition of the mercury oxide.
Since it is a decomposition reaction, we can see that there is a break down of the mercury oxide to give rise to the oxygen and to the mercury as such if we remove the mercury oxide the reaction stops.
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Help with beers law please I will rate brainliest
Answer:
Beer's law (sometimes called the Beer-Lambert law) states that the absorbance is proportional to the path length, b, through the sample and the concentration of the absorbing species, c: A α b · c. The proportionality constant is sometimes given the symbol a, giving Beer's law an alphabetic look: A = a · b · c.
Explanation:
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sulfosalicylic acid is a secondary method that can be used to determine the presence of which one of the following substances in the urine, if color interference prevents the accurate reading of a urine chemical reagent strip?
Sulfosalicylic acid is a secondary method that can be used to determine the presence of Protein in urine.
Sulfosalicylic acid (SSA) is a secondary method that can be used to determine the presence of proteins in urine if colour interference prevents the accurate reading of a urine chemical reagent strip. The reagent strip is a primary screening method for detecting proteins in urine, but certain substances can cause colour interference and make it difficult to accurately interpret the results. In these cases, SSA can be used as a confirmatory test.
The SSA test works by precipitating proteins in the urine sample. The resulting protein precipitate is then centrifuged and the supernatant is removed. The protein pellet is dissolved in a small amount of acid and the solution is then analyzed spectrophotometrically.
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If an athlete weighs 155 lb and has 15.0 % body fat by weight, how many pounds of fat does the athlete's body contain?
Why is it difficult to classify all chemical reactions into one of the 5 basic types?
One of five fundamental types can be applied to a wide variety of chemical processes.To accurately forecast the byproducts of an unknown reaction, a detailed grasp of various kinds of reactions is helpful.
What are 5 ways to classify the type of reaction?One of five fundamental types can be applied to a wide variety of chemical processes.To accurately forecast the byproducts of an unknown reaction, a detailed grasp of various kinds of reactions is helpful.Condensation reactions (and their opposite, cleavage reactions), exchange reactions, acid-base interactions, and oxidation-reduction reactions are the five basic kinds into which the majority of chemical reactions can be divided.Students will be better equipped to forecast the outcomes of a chemical reaction once they have mastered identifying and categorizing the five reactions.All five sorts of reactions will be defined by the students. Finding practical ways to classify reactions is the key to success.It will be easier for you to foresee the outcomes of interactions between certain chemicals or elements if you are familiar with a few fundamental types of reactions.To learn more about chemical reactions refer
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Accuracy of which of the following equipment will be analyzed in this experiment: (If you are unsure; consult the lab experiment write-up:) Select one or more: A. Thermometer 50 mL B. Graduated Cylinder 10 mL C. Pipet Analytical Balance Buret 10 mL D. Graduated Cylinder
C. Pipet Analytical balance,It is expected that the accuracy of the following equipment will be examined depending on the equipment listed: Thermometer Graduated Cylinder Thermometer Buret C.
Pipet Analytical balance, part E These tools are frequently used in scientific experiments to measure volume, temperature, and weight. It's also crucial to understand the difference between accuracy and precision. While precision refers to the reproducibility of a series of measurements, accuracy relates to how near a measurement is to the real value of the quantity being measured.While 10 ml graduated cylinders feature marks every tenth of a milliliter, most 50 ml graduated cylinders have markings spaced every milliliter. Our measurement should be more precise if we use a 10 ml graduated container than if we use a 50 ml graduated container. We refer to an instrument as being ACCURATE if it produces values that are extremely near to the genuine value. Example: The same sample was measured three times using a graduated cylinder, yielding readings of 566 mL, 584 mL, and 541 mL. These three figures add out to 563.7 mL on average.
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for each of the following reactions, write a balanced chemical equation. a)equimolar solutions of cobalt (iii) bromide and lithium sulfide are mixed
Lithium sulfide and cobalt (III) bromide are mixed in equimolar solutions. Chemical equation that is balanced:
CoBr3(aq) + Li2S(aq) ---> LiBr(aq) + CoS(s)In the equation CoBr3(aq) + Li2S(aq) ---> LiBr(aq) + CoS(s), each component can be identified as follows:
CoBr3(aq): cobalt (III) bromide in aqueous solutionLi2S(aq): lithium sulfide in aqueous solutionLiBr(aq): lithium bromide in aqueous solutionCoS(s): cobalt sulfide, a solid compoundIn this reaction, cobalt (III) bromide and lithium sulfide react to form lithium bromide and cobalt sulfide. The reactants are equimolar solutions, meaning that there are equal amounts of each reactant. When the two solutions are mixed, the cobalt (III) ions and lithium ions come into contact and form an ionic bond, which results in the formation of new solid cobalt sulfide and aqueous lithium bromide.
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A student obtains a mixture of the liquids hexane and octane, which are miscible in all proportions. Which of the following techniques would be best for separating the two components of the mixture, and why?
A. Filtration, because the different densities of the liquids would allow one to pass through the filter paper while the other would not.
B. Paper chromatography, because the liquids would move along the stationary phase at different rates owning to the difference in polarity of their molecules.
C. Column chromatography, because the higher molar mass of octane would cause it to move down the column faster than hexane.
D. Distillation, because the liquids would boil at different temperatures owning to the difference in strength of their intermolecular forces.
D. Distillation, because the liquids would boil at different temperatures owing to the difference in the strength of their intermolecular forces.
Key points:
Distillation is a separation technique that utilizes differences in boiling points of the components in a mixture.Hexane and octane have different boiling points, therefore they can be separated by distillation.The liquid mixture is heated and the component with the lower boiling point vaporizes first and is condensed and collected as a separate fraction.This process can be repeated to obtain other fractions as well.Distillation is a very common and efficient method for separating volatile components with large differences in boiling points.Learn more about Distillation here:
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How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds? 3-Chlorocyclopentene The number of chemically non-equivalent hydrogens is ____
The number of chemically non-equivalent hydrogen is ____
There are three chemically non-equivalent hydrogens present in 3-chlorocyclopentene.
Non-equivalent hydrogens are groups which have the property of distinctive synthetic movements. We will find the same number of signs in an NMR spectrum along its lines due to the non-equivalent hydrogens.
These non-equivalent hydrogens can be determined by finding out whether a molecule is symmetric or not at first.
In the molecular structure of 3-chlorocyclopentene, chlorine is attached to the third position of the cyclopentene ring. There are four hydrogen atoms attached to the cyclopentene ring, and out of these four hydrogen atoms, three hydrogen atoms have different environments, so there are three chemically non-equivalent hydrogens in its structure.
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which of the following is the strongest nucleophile? which of the following is the strongest nucleophile? meo- ch3- nh3 meoh
The strongest nucleophile is C: NH3.
The strongest nucleophile is the compound that can donate its electrons the most effectively to form a covalent bond with an electron-deficient species (electrophile).
Out of the compounds listed, NH3 is the strongest nucleophile. This is because nitrogen atoms in NH3 have an unshared pair of electrons that are highly polarized and readily available for bonding.
Methoxide (MeO-) is a nucleophile, but it is less basic than NH3 because the oxygen atom is an electron-withdrawing group and is less able to donate electrons.
Methanol (MeOH) is not a nucleophile, as it does not have a lone pair of electrons that can be used for bonding.
Methyl (Me-) is not a nucleophile as it is not a compound, a methyl is just a functional group that can be bound to various atoms or molecules, but it doesn't have any electron pair to donate.
So NH3 is the strongest nucleophile.
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FILL IN THE BLANK. A __ reaction is a process in which a covalent or ionic bond is broken or formed.
A chemical reaction is a process in which a covalent or ionic bond is broken or formed.
A chemical reaction is a process that converts one or more compounds, known as reactants, to one or more distinct substances, known as products. Chemical elements or compounds are examples of substances.
A chemical reaction equation specifies the reactants and products, whereas a balanced chemical reaction equation specifies the reactants and products' mole relationships. The quantity of energy involved in the reaction is frequently mentioned. Reaction stoichiometry is the study of the quantitative aspects of chemical processes.
Synthesis (anabolic), decomposition (catabolic), and exchange are the t
Three primary types of chemical reactions involved in human physiology.
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Why do elements not have a numerical value for standard heats of formation and Free energies of formation but do have a numerical value for standard molar entropies?
Because it takes no energy to generate a naturally occurring compound, the enthalpy of formation for an element in its elemental state will always be 0.
What do you mean by formation standard free energies?The free energy shift that happens when 1 mole of a material is created from its component elements in their standard states is referred to as the standard free energy of formation. The standard free energy of production of a pure element in its standard state is zero.
The distinction between Gibbs free energy and standard free energy is that the former is dependent on the experimental circumstances, whilst the latter describes the Gibbs free energy for reactants and products in their standard state.
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iron has a density of 7.86 g/cm3 . Calculate the volume (in dL ) of a piece of iron having a mass of 4.62 kg . Note that the density is provided in different units of volume and mass than the desired units of volume ( dL ) and the given units of mass ( kg ). You will need to express the density in kg/dL ( 1 cm3 = 1 mL ) before calculating the volume for the piece of iron.
Answer:
To calculate the volume of the piece of iron, we need to divide its mass by its density. But first, we need to express the density in the same units as the mass, which is kg/dL. To do this, we need to convert the density from g/cm3 to kg/dL.
1 cm3 = 1 mL = 0.001 L
1 dL = 0.1 L
Therefore, 1 cm3 = 0.001 L = 0.1 dL
Also, 1 g = 0.001 kg
Therefore,
density in kg/dL = (density in g/cm3) * (1 kg/1000 g) * (0.1 dL/1 cm3)
= 7.86 g/cm3 * 0.001 kg/g * 0.1 dL/cm3
= 0.00786 kg/dL
Now we can use this density to calculate the volume of the piece of iron:
Volume = mass / density
= 4.62 kg / 0.00786 kg/dL
= 5892.9 dL
So, the volume of the piece of iron is 5892.9 dL.
How many carbon atoms are in the following compound: Barium Carbonate?
The chemical compound Barium Carbonate (BaCO3) is composed of one Barium atom (Ba), one Carbon atom (C) and three Oxygen atoms (O3). Therefore, the number of carbon atoms in Barium Carbonate is 1.
The compound Barium Carbonate has 1 carbon atom.
The chemical formula for Barium Carbonate is BaCO3, which means it contains 1 atom of Barium (Ba), 1 atom of Carbon (C), and 3 atoms of Oxygen (O). Therefore, the compound Barium Carbonate has 1 carbon atom.
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how many moles are in 559 grams of Mg(CIO3)2
The number of moles which are in 559 grams of Mg(CIO3)2 is 2.92mol.
What is Mole?This is referred to as the unit of the quantity amount of substance and is also defined as a measure of how many elementary entities of a given substance are in an object or sample.
The formula is mole = mass/molar mass.
Mg(CIO3)2 has a molar mass of 191.20g/mol
Mole = 599/191.20 = 2.92mol.
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heparin is a common anti-coagulant. to prepare an iv containing heparin and buffers, you acquire a large mixing tank. for this problem, assume a simplified system in which there are three inlet streams and one outlet stream. in mixing the solution, you keep track of two constituents: heparin and bicarbonate. streams 1, 2, and 3 enter the mixer; stream 4 leaves the mixer. stream 1 contains 300 mm heparin in water. stream 2 contains 200 mm bicarbonate in water. stream 3 contains water with no heparin or bicarbonate. the overall mass flow rate in stream 4 is 1000 g/min. the outlet stream contains 60 mm heparin, 30 mm bicarbonate, and water. assume that the density of every stream is 1.0 g/cm3 .
You may use the following equation to get each stream's mass flow rate: concentration times flow rate equals mass flow rate. Mass flow rate for Stream 1 is 300 mm (heparin) times flow rate determine by other means
The amount of fluid passing through a pipe or other conduit in a specific amount of time is measured as the flow rate. It is frequently expressed in terms of volume/time, such as gallons/minute or cubic meters/second. Numerous variables, such as the pipe's size and form, the fluid's pressure, and its viscosity, can have an impact on the flow rate. In some circumstances, the flow rate may be managed by valves or other equipment like flow metres or pumps. Numerous sectors, including water treatment, oil and gas extraction, and manufacturing, depend on knowing and managing flow rate. such as cubic feet per second (cf/s) or
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Consider the reversible reaction
A(g) B(g)
Which K values would indicate that there is more B than A at equilibrium?
K = 1 x 10-5
K = 7000
K = 8 x 105
K = 0.2
PLEASE HURRY WILL MARK BRAINLY!!!!
Answer:
2nd and 3rd
Explanation:
A K-value >> 1 typically indicates a lot more of the product (in this case B) than the reactants. So K = 7000 and K = [tex]8*10^5[/tex] matches that description.
An atom of nitrogen has 7 protons, 7 electrons, and 7 neutrons. What is the atomic mass of the nitrogen atom?
Answer:
Explanation:
The atomic mass of the nitrogen atom is 14
Help on 1.15 please!!
In this case, multiplying 0.35 by 55 gives us the number 19. 25.2 m squared plus three squares is a match. This is equivalent to the third square of 20 by 25.4.
What is significant numbers?We will use the least number of decimal places for addition and subtraction of important values supplied 20 0.9 kg minus 12.90 kg divided by 10 liters thus far. So there are two decimal places in this. Then, 8.0 kg divided by 100 gallons will equal 20.99 install 0.90 sequel to eight point and apologize. Therefore, take note that the least amount of significance you have is three significant numbers. As a result, this is likewise equivalent to 0.8 kg each item. We need to divide 45.82 g by three cm, 0.64 g by 0.859 cm, and 0.64 g by three cm for a letter B. Therefore, we must first solve for the parenthesis in this case. so 27 cm divided by 45.82 g. Q.divided by 0.634 cm, my nose weighs 0.64 g. Do the math with two. The division is then distributed when we are ready to resolve it. This therefore amounts to 1.7 g per centimeter. We have 1.7 gram cm Q divided by two, or Q miners 6.0 times 10 to the negative three g per centimeter cube. This is the same as 0.9 grams per centimeter. Finally, we have 0.35 m times 1.5 m, or the final 25.2 m squared, for literacy. In this case, multiplying 0.35 by 55 gives us the number 19. 25.2 m squared plus three squares is a match. This is equivalent to the third square of 20 by 25.4.To learn more about significant numbers refer to:
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5. Explain the reactivity of the the elements in 2 groups of the periodic table
The reactivity of the elements in group 2 would increase down the group.
What is the reactivity?We have to note that when we are talking about the reactivity of the elements we are looking at how easiliy the elements are able to engage in the process of chemical combination.
For the group two elements, they are highly reactive but not as reactive as the elements that we can find in group 1. The reactivity of the element is that are in group 2 would increase as we move down the group of the elements.
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6b. Identify the quantum numbers for the very last electron in Cadmium (Cd).
n=
1=
mi =
ms=
The quantum numbers for the very last electron in Cadmium (Cd) atom is (5, 0, 0, ±¹/₂) for the four quantum numbers.
What are quantum numbers?Quantum numbers are the set of numbers used to express the location and energy of an electron in an atom.
There are four quantum numbers used to describe the location and energy of an electron in an atom, and they are:
Principal quantum number, nazimuthal quantum number, lmagnetic quantum number, mi andspin quantum numbers, msThe electronic configuration of cadmium is [Kr]4d¹⁰5s².
Hence, cadmium belongs to period 5 of the periodic table, and the last electron occupies the 5s orbital.
The l value of the s orbital is 0, and mi is 0 as well.
The value of ms is ±¹/₂.
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two different ionic compounds each contain only copper and chlorine. both compounds are powders, one white and one brown. an elemental analysis is performed on each powder. which of the following questions about the compounds is most likely to be answered by the results of the analysis?
The question about compounds that is most likely to be answered by the analysis is a) what is the formula unit of each compound?
The elemental analysis of two different ionic compounds, both of which contain only copper and chlorine, can be used to determine the formula unit of each compound.
An ionic compound is a type of chemical bond formed by the attraction between ions with opposite charges. In this case, the two different ionic compounds, which are powders, one white and one brown, contain only copper and chlorine ions.
The elemental analysis will help to determine the ratio between the copper and chlorine ions in the compound, which in turn will give the formula unit for each compound.
By conducting an elemental analysis on the two powders, one can answer the question of what the formula unit of each compound is. Hence, option a is correct.
This is because an elemental analysis can determine the elements present in a given compound, as well as the ratio between them. Knowing the elements present in a compound and their ratio allows us to determine the formula unit of the compound.
Although a part of your question is missing, you might be referring to this question:
Two different ionic compounds each contain only copper and chlorine. both compounds are powders, one white and one brown. An elemental analysis is performed on each powder. Which of the following questions about the compounds is most likely to be answered by the results of the analysis?
a) what is the formula unit of each compound?
b) what is the molecular mass of each compound?
c) What is ratio or each compound?
d) none of the above
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a student places a drop of food coloring into two water samples. her observations are shown in the table. which statement best explains the observations in the table? (1 point)
The statement that best explains the observations in the table is - the water molecules of sample 1 are moving faster.
The temperature has an influence on the molecules of water. An increase in temperature is can make the water molecules to have more energy and therefore move at a faster rate.
When this happens the water molecules are said to move far apart and there will be an increase in the volume of water.
When water is heated, it has the tendency to expand and increase in volume, thereby becoming less dense.
The food coloring will spread into the water molecules by the phenomenon of diffusion. In hot water, food coloring will diffuse faster.
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which properties of a material are affected by a bonding type
[tex]\huge\underline{\red{A}\green{n}\blue{s}\purple{w}\pink{e}\orange{r} -»}[/tex]
Hardness, melting and boiling points, solubility, and conductivity.Explanation:
Hope it helps you~The flask contains 25 mL of an unknown diprotic acid aqueous solution that reacts in a 1:2 stochiometric ratio with NaOH. Titrate the solution with NaOH to determine the concentration of the acid.
The concentration of the acid (the analyte) is determined using the formula below:
Ca = * Cb * Vb / 2* VaWhat is a titration?
Titration is a method of quantitative chemical analysis used to determine the concentration of an unknown substance known as the analyte.
Titrants are created as standard solutions with established concentrations and volumes as reagents. To ascertain the concentration of an analyte, the titrant reacts with an analyte solution. The titration volume is the amount of titrant that interacted with the analyte.
The concentration of the acid (the analyte) is determined using the formula given below as follows:
Ca = * Cb * Vb / 2* Va
where;
Ca is the concentration of the acidCb is the concentration of the baseVb is the volume of the baseVa is the volume of the acid.Learn more about titration at: https://brainly.com/question/186765
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A sample of gold has a mass of 23.82
The volume of the gold sample, given the theoretical density and the mass, is 1.23 ml
How to find the volume ?When given the theoretical density of a gold sample and the mass, you can use the formula for density to find the volume of the gold sample.
The volume for density is:
Density = Mass / Volume
Mass = 23. 82 g
Density = 19. 30 g / ml
The volume is:
19.30 = 23 .82 / Volume
Volume x 19. 30 = 23. 82
Volume = 23. 82 / 19. 30
= 1.23 ml
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The full question is:
A sample of gold has a mass of 23.82 g, given that the theoretical density is 19.30 g/ml, what is the volume of the gold sample?