Practice Test

Question 1

What is the volume of 2 mol of chlorine gas at STP?

Revolt · Accepted Answer

D: 44 point 8 liters

Question 2

Consider the balanced equation. Zn plus cap h sub 2 SO sub 4 rightarrow ZnSO sub 4 plus cap h sub 2 The mole ratio of zinc to zinc sulfate is

Revolt · Accepted Answer

A: ratio of 1 to 1 .

Question 3

Consider the balanced equation. PCl sub 3 plus Cl sub 2 rightarrow PCl sub 5 What is the mole ratio of PCl sub 3 to PCl sub 5 ?

Revolt · Accepted Answer

A: 1 point 1

Question 4

The gases listed are at standard temperature and pressure: 1 mol of CO sub 2 gas 1 mol of cap n sub 2 gas 2 mol of cap o sub 2 gas Which statement is correct?

Revolt · Accepted Answer

B: The volumes of  1 mol  of  CO sub 2   and  1 mol  of  cap n sub 2   gases are the same.

Question 5

A scientist is examining a mixture of nitrogen, hydrogen, and ammonia. The individual pressures that are exerted by nitrogen and hydrogen are 0 point 2 6 atm and 0 point 2 8 atm, respectively. If the total pressure is 0 point 9 0 atm, what is the partial pressure of ammonia? Use cap p sub cap t is equal to cap p sub 1 plus cap p sub 2 plus cap p sub 3 plus dot dot dot plus cap p sub n

Revolt · Accepted Answer

D: 0 point 3 6  atm

Question 6

A tire at 21 times degree C has a pressure of 0 point 8 2 atm. Its temperature decreases to negative 3 point 5 times degree C If there is no volume change in the tire, what is the pressure after the temperature change? Use the fraction with numerator cap p sub 1 and denominator cap t sub 1 is equal to the fraction with numerator cap p sub 2 and denominator cap t sub 2

Revolt · Accepted Answer

C: 0 point 7 5  atm

Question 7

Which law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constant?

Revolt · Accepted Answer

A: Avogadro’s law

Question 8

The molar mass of water open paren cap h sub 2 cap o close paren is 18 point 0 g over mol A sample of water has a mass of 18 point 0 g How many moles of water are contained in this sample?

Revolt · Accepted Answer

D: 1 point 0 0  mole

Question 9

Consider the substance. 1 mol of beryllium 1 mol of salt 1 mol of water 1 mol of hydrogen Which statement is true about these substances?

Revolt · Accepted Answer

A: They have different masses.

Question 10

The ideal gas constant, cap r has several different values that could be used. Which quantity causes these differences?

Revolt · Accepted Answer

B: pressure

Practice Test Answers

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