FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 10: Gases

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 21

Multiple Choice

Review LaterAdd Note

Review Later

Zinc reacts with aqueous sulfuric acid to form hydrogen gas: Zn (s) + H₂SO₄ (aq) → ZnSO₄ (aq) + H₂ (g) In an experiment, 177 mL of wet H₂ is collected over water at 27 °C and a barometric pressure of 766 torr. The vapor pressure of water at 27 °C is 26.74 torr. The partial pressure of hydrogen in this experiment is ________ atm.

A) 0.972
B) 739
C) 1.01
D) 793
E) 1.04

Correct Answer

verified

Show Answer

Question 22

Multiple Choice

Review LaterAdd Note

Review Later

Automobile air bags use the decomposition of sodium azide as their source of gas for rapid inflation: 2NaN₃ (s) → 2Na (s) + 3N₂ (g) . What mass (g) of NaN₃ is required to provide 26.5 L of N₂ at 22.0 °C and 1.10 atm?

A) 52.2
B) 700.
C) 0.807
D) 1.21
E) 1.10

Correct Answer

verified

Show Answer

Question 23

Multiple Choice

Review LaterAdd Note

A 0.133 mol sample of gas in a 525 mL container has a pressure of 312 torr. The temperature of the gas is ________ °C.

What volume (mL) of sulfur dioxide can be produced by the complete reaction of 3.82 g of calcium sulfite with excess HCl (aq) , when the final SO₂ pressure is 827 torr at 44.0 °C?

Of the following gases, ________ has density of 0.906 g/L at 315 K and 1.16 atm.

A gas at a pressure of 325 torr exerts a force of ________ N on an area of 5.5 m².

The molar volume of a gas at STP is ________ L.

The first person to investigate the relationship between the pressure of a gas and its volume was ________.

The pressure exerted by 1.0 mol of gas in a 13 L flask at 22 °C is ________ kPa.

The volume of HCl gas required to react with excess Ca to produce 11.4 L of hydrogen gas at 1.62 atm and 62.0 °C is ________ L.

If 50.75 g of a gas occupies 10.0 L at STP, 129.3 g of the gas will occupy ________ L at STP.

The van der Waals equation corrects the ideal gas law for the finite volume and ________ of gas molecules.

CO (5.00 g) and CO₂ (5.00 g) were placed in a 750.0 mL container at 50.0 °C. The partial pressure of CO₂ in the container was ________ atm.

Which one of the following gases would have the highest average molecular speed at 25 °C?

30.0 grams of argon and 15.0 grams of xenon are placed in a 170.9 ml container at 21.8 °C. The partial pressure of xenon is ________ atm.

Molecular compounds of low molecular weight tend to be gases at room temperature. Which of the following is most likely not a gas at room temperature?

Automobile air bags use the decomposition of sodium azide as their source of gas for rapid inflation: 2NaN₃ (s) → 2Na (s) + 3N₂ (g) . What mass (g) of NaN₃ is required to provide 40.0 L of N₂ at 25.0 °C and 763 torr?

The temperature of a sample of CH₄ gas (10.34 g) in a 50.0 L vessel at 1.33 atm is ________ °C.

The amount of gas that occupies 60.82 L at 31.0 °C and 367 mm Hg is ________ mol.

The amount of gas that occupies 36.52 L at 68.0 °C and 672 mm Hg is ________ mol.