What is the Charles and boyles law?

Answers

Answer 1

Answer: The Charles and Boyles law,is a gas law that says that the pressure and volume of a gas have an inverse relationship, when temperature is held constant. If you increase the pressure 10 times, the volume will decrease 10 times. You have a fixed mass of gas, so n (the number of moles) is constant. R is always constant - it is called the gas constant. Boyle's Law demands that temperature is constant as well.

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When both forward and reverse changes are physical changes, the resulting equation represents a _____. a. physical equilibrium
b. chemical equilibrium
c. reversible reaction
d. none of the above

Answers

When both forward and reverse changes are physical changes, the resulting equation represents a physical equilibrium. The correct answer is A.

Answer:

1.A

2.FALSE

3.C

100%

Which hand is negatively charged? Ο Α. OB. Oc. OD.

Answers

Answer:

it would be OA that is negatively charged

What is the mass of 2.25 moles of manganese(lv) sulfide(MnS2)

Answers

Explanation:

Number of moles is defined as mass divided by molar mass of the substance or atom.

Mathematically, No. of moles = $(mass)/(molar mass)$

It is known that molar mass of $MnS_(2)$ is 119.058 g/mol and number of moles is given as 2.25 mol.

Therefore, calculate mass of $MnS_(2)$ as follows.

No. of moles = $(mass)/(molar mass)$

2.25 mol = $(mass)/(119.058 g/mol)$

mass = 267.88 g

Thus, we can conclude that mass of 2.25 moles of manganese(lv) sulfide(MnS2) is 267.88 g.

Final answer:

The mass of 2.25 moles of Manganese (V) Sulfide (MnS2) can be calculated by multiplying the molar mass of MnS2 (119.08 g/mol) by the number of moles (2.25). The result is approximately 267.93 grams.

Explanation:

The question asks about the mass of 2.25 moles of manganese (V) Sulfide (MnS2). We can calculate this using the molar mass of MnS2. The molar mass of manganese (Mn) is approximately 54.94 g/mol, and the molar mass of Sulfur (S) is approximately 32.07 g/mol. To find the molar mass of MnS2 we add up the molar mass of Mn and twice the molar mass of S (because we have 2 S atoms). Therefore the molar mass of MnS2 = 54.94 + 2*(32.07) = 119.08 g/mol. To find the mass in grams, we multiply this molar mass by the number of moles. Hence, the mass of 2.25 moles of MnS2 = 2.25 * 119.08 = 267.93 grams.

Learn more about Molar Mass here:

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Hydrocarbons having the same formula but variations in structure are called isomers.a. True
b. False

Answers

Answer:The given statement is true.

Explanation:

Isomers are defined as two or more compounds with same structural formula but different arrangement of atom and chemical properties.

For example: Butane, 2-methyl propane are isomers with structural formula $C_4H_(10)$ , acetone and propanal both isomers to each other with same structural formula of $C_3H_6O$ .