Gas Stoichiometry

What is the equation for gas density?

What is the molar volume of a gas at STP?

• 18.4 L/mol

• 23.2 L/mol

• 22.4 L/mol

• 25.0 L/mol

The ideal gas law equation is

What pressure will be exerted by 0.50 mol of a gas at 300K if it is contained in a 3.0L vessel?

• 6.2 atm

• 3.3 atm

• 5.0 atm

• 4.1 atm

At 34^oC, the pressure inside a nitrogen filled tennis ball with a volume of 0.50 L is 2.00 atm. How many moles of nitrogen are in the tennis ball?

• 0.040 mol

• 0.04 mol

• 0.060 mol

• 0.06

What is the density of a gas that measures at 2.00 atm and 320K if its molar mass is 70.9g/mol?

• 4.50 g/mol

• 3.20 g/mol

• 5.40 g/mol

• 2.30 g/mol

What is the density of a gas at STP if it's molar mass is 55.6 g/mol?

• 2.48 g/mol

• 4.32 g/mol

• 1.56 g/mol

• 3.67 g/mol

You have 600. mL of propane (C­_3­H­₈) that reacts with excess oxygen gas at STP. How many mols of propane are used in the reaction?

• 0.0429 mol

• 0.0157 mol

• 0.0345 mol

• 0.0268 mol

Tags

NGSS.HS-PS1-7

If you wanted to react 3.00 L of chlorine (Cl₂) gas at 1.00 atm and 350K, how many mols acetylene (C₂H₂) would need to be used to ensure all the chlorine is consumed? (Remember the three steps!)

2 Cl₂(g) + C₂H₂(g) --> C₂H₂Cl₄(l)

• 0.043 mol

• 0.064 mol

• 0.052 mol

• 0.023 mol

Tags

NGSS.HS-PS1-7