Honors Chemistry Unit 6_2021

A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL?

• 157.5⁰C

• 57.5 K

• 330.5 K

• 330.5⁰C

A scientist needs to store 28.0 moles of xenon gas at STP in the lab. What size gas tank will he need?

• 628 L

• 473 L

• 219 L

• 376 L

Calculate the volume of a 12.0 g of helium at 100°C and 1.2 atm.

• 306.1 L

• 76.2 L

• 7750 L

• 56.0 L

What is the correct temperature on the Kelvin scale equal to 30^oC?

• 303K

• 243K

• 313K

• 253K

When the temperature is constant (k) inside a balloon, if you add pressure on it, the volume will ..... 

• Decrease
• Increase
• Not Change at all
• Particles will solidify 

What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium with excfess water according to the following reaction?
1Mg + 2H₂O --> Mg(OH)₂ + H₂

• 62L
• 65L
• 31L
• 124L

2CO + O₂ −-> 2CO₂

How many liters of carbon dioxide at STP are produced from 10.0 L of carbon monoxide at STP?

• 10.0 L

• 20.0 L

• 5010 L

• 0.0199

Which of the following gases will diffuse at the fastest rate?

• O₂

• NH₃

• CO₂

• CH₄

Which is the state of matter that has an indefinite shape and indefinite volume?

• Solid
• Liquid
• Gas

The more energy that particles have, the ___ they move.

• slower

• faster