Question

A) A syringe containing 1.25 mL of oxygen gas is cooled from 90.3 ∘C to 0.9 ∘C. What is the final volume Vf of oxygen gas?

B) What is its volume after an additional 0.30 mol of gas is added to the cylinder? (Assume constant temperature and pressure.) Express your answer to three significant figures.

C) What is the pressure in a 12.9 L cylinder filled with 0.425 mol of nitrogen gas at a temperature of 300 K ?

D) Find the pressure in mmHg of a 0.122 g sample of helium gas in a 648 mL container at 34 ∘C. Express the pressure to three significant figures and include the appropriate units.

E) What is the temperature of 0.50 mol of gas at a pressure of 1.1 atm and a volume of 11.5 L ? Express the temperature in kelvins to two significant figures.

F) What volume does 0.482 mol of gas occupy at a pressure of 719 mmHg at 59 ∘C? Express the volume to three significant figures and include the appropriate units.

G) Use the molar volume of a gas at STP to calculate the density of carbon dioxide gas at STP. Express the density in grams per liter to three significant figures.

Thank you so much in advance! Much appreciated! I've been working on these questions for the past week and can't get them at all.

Answer 1