Gas Stoichiometry Ideal Gas Law

A 7.50 liter sealed jar at 18 °C contains 0.125 moles of oxygen and 0.125 moles of nitrogen gas. What is the pressure in the container?

• 7.38 atm
• 0.796 atm
• 0.684 atm
• 0.398 atm

What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 47 ^oC?
PV=nRT

• 14.19 atm
• 16.53 atm
• 18.42 atm
• 22.54 atm

Three gases, Ar, N₂ and H₂ are mixed in a 500L container. Ar has a pressure of 255 torr, N₂ has a pressure of 228 torr and H₂ has pressure of 752 torr. What is the total pressure in the container?

• 483torr
• 270torr
• 1235torr

At STP, what is pressure in atmospheres?

• 1 atm
• 10 atm
• 0 atm
• 100 atm

According to Avogadro's Law, at STP 1 mole of gas will occupy...

• 22.4 mL

• 22.4 L

• 22.4 g

• V=p/nRT

2Al + 6HCl --> 2AlCl₃ + 3H₂

Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?

• 13

• 8.8

• 0.99

• 1.0

Mg₃N₂ + 3H₂O ––> 3 MgO + 2NH₃

If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?

• 4.9 L NH₃

• 4.96 L NH₃

• 0.261 L NH₃

• 0.26 L NH₃

2Cu₂S + 3O₂ → 2Cu₂O + 2SO₂

This reaction uses 18.2 g of copper (I) sulfide. What volume of sulfur dioxide gas would be collected at 237°C and 10.7 atm?

• 0.446 L

• 57 L

• 0.207 L

• 0.21 L

Tags

NGSS.HS-PS1-5

You have 3.5 L of H₂ (g) at STP. How many moles of gas are there?

• 22.4 mol
• 22.4 L
• 0.16 mol
• 0.16 L

What is standard temperature?

• 0K
• 0^oC
• 173 K
• 173.15 K