CHEMISTRY HIGH SCHOOL

ASAP PLEASEWhich one of the following is a measure of the disorder in a system?
A. Entropy
B. Kinetic energy
C. Temperature
D. Enthalpy

Answers

Answer 1

Answer:

Answer:

Explanation:

the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work.

Answer 2

Answer: The answer to this question is A) Entropy

Related Questions

This is the equation for the combustion of propane.C3H8 + 5O2 → 3CO2 + 4H2O + heatWhich are the reactants and the products in this reaction?A.The reactants are C3H8 (propane) and H2O (water). The products are O2 (oxygen) and CO2 (carbon dioxide).B.The reactants are C3H8 (propane) and O2 ( oxygen). The products are CO2 (carbon dioxide) and H2O (water).C.The reactants are CO2 (carbon dioxide) and H2O (water). The products are C3H8 (propane) and O2 ( oxygen).D.The reactants are O2 (oxygen) and CO2 (carbon dioxide). The products are C3H8 (propane) and H2O (water).
A molecule of butane and a molecule of 2-butene both have the same total number of(1) carbon atoms (3) single bonds (2) hydrogen atoms (4) double bonds
Find the molarity of the following solutions: 0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution.
Why does chlorine have a higher ionization energy than aluminum
Approximately how long has the Moon been geologically inactive?A. 1 billion yearsB. 3 billion yearsC. 4 billion yearsD. 4.5 billion years

What is pH a measure of?a. density
b. solute concentration
c. hydrogen-ion concentration
d. ion concentration in a solution

Answers

it measures the acidity/basic level, that rules A out
hope this helped a little

Answer:

c. hydrogen-ion concentration

Explanation:

pH is a logarithmic measure of the hydrogen ion concentration of an aqueous solution pH = -log[H + ] where log is the base 10 logarithm and [H + ] is the hydrogen ion concentration in moles per liter

How many chlorine molecules are in 35.5g of chlorine gas

Answers

since chlorine is one of the 7 diatomic elements we know that chlorine appears as Cl₂ gas naturally. That means that the molar mass of a chlorine gas is 70.9g/mol. That being said, first you need to find the number of moles of chlorine gas that are present in a 35.5g sample. To do this divide 35.5g by the molar mass of chlorine gas (70.9g/mol) to get 0.501mol of chlorine. Then you have to multiply 0.501mol by 6.02×10²³ to get the number of chlorine gas molecules. Therefore 3.01×10²³ molecules of chlorine gas are present in a 35.5g sample.

I hope that helps. Let me know in the comments if anything is unclear.

The chemical symbol for iron is

Answers

Fe
FeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFeFe

Fe is the chemical symbol for iron FEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

The mass of a proton is approximately equal to(1) 1 atomic mass unit
(2) 12 atomic mass units
(3) the mass of one mole of carbon atoms
(4) the mass of 12 moles of carbon atoms

Answers

The correct answer is option 1. The mass of a proton is approximately equal to 1 atomic mass unit. They almost have the same mass with a neutron while the electron is about 2000 times lighter than the two. The three mentioned particles are the subatomic particles found in an atom.

Final answer:

The mass of a proton is approximately equal to 1 atomic mass unit (AMU), which is much lighter than the weight of a mole of carbon atoms or 12 moles of carbon atoms.

Explanation:

The mass of a proton is approximately equal to 1 atomic mass unit (AMU). This measurement is a standardized unit of mass that physicists and chemists use to express the atomic and molecular weights of elements.

The proton, along with the neutron, makes up the nucleus of an atom, and both have approximately the same mass, which is about 1 AMU. This is substantially lighter than the weight of one mole of carbon atoms (approximately 12 grams), and even more so compared to the mass of 12 moles of carbon atoms.

Learn more about Proton Mass here:

brainly.com/question/36611410

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Which best describes the effect of J. J. Thomson’s discovery?

Answers

The correct answer for the question that is being presented above is this one: "A. The accepted model of the atom was changed." J J Thomson discovered the electrons and performed experiment using the cathode ray tube
Here are the following choices:
A. The accepted model of the atom was changed.
B. The accepted model of the atom was supported.
C. Cathode ray tubes were no longer used in experiments due to poor results.
D. Cathode ray tubes became the only instrument of use in the study of atoms

Hard water contains calcium and magnesium, which undergo oxidation andclog water pipes. Which statement best describes this change as a chemical change?

A.Calcium and magnesium dissolve in water.

B.Calcium and magnesium evaporate on contact with the walls of the pipe.

C.Calcium and magnesium form precipitates of their respective oxides.

Answers

It's C, calcium and magnesium form precipitates of their respective oxide

Final answer:

The statement 'Calcium and magnesium form precipitates of their respective oxides' best describes the chemical change as it involves a reaction that transforms the calcium and magnesium into new compounds, their oxides, which can clog pipes.

Explanation:

The statement that best describes this change as a chemical change is C. Calcium and magnesium form precipitates of their respective oxides. This represents a chemical change because it involves a reaction that transforms the calcium and magnesium into new substances - their oxides. Here's how it works: in the presence of oxygen, calcium and magnesium in hard water can undergo an oxidation process. During this oxidation, the calcium becomes calcium oxide and the magnesium becomes magnesium oxide. These oxides are less soluble in water and form precipitates, which can accumulate and clog the pipes.