Living by Chemistry Unit 3 Review

1) How many moles of gas are in a 30 1) How many moles of gas are in a 30. L scuba canister if the temperature of the canister is 300. K and the pressure is 200. atm? 240 mol

2) A gas balloon has a volume of 106 2) A gas balloon has a volume of 106.0 liters when the temperature is 45.0 °C and the pressure is 0.97 atm. What will its volume be at 20.0 °C and 1.03 atm pressure? 92.7 L

3) How many molecules are in 0.85 moles of NH3? 5.12 x 1023 molecules

4) Convert 35°C to Fahrenheit

5) Convert 75°F to Celsius 23.9°C

6) How many moles of gas does it take to occupy 120 6) How many moles of gas does it take to occupy 120. liters at a pressure of 2.30 atm and a temperature of 340. K? 9.89 mol

7) The density of solid CO2 is 1 7) The density of solid CO2 is 1.56 g/mL and the density of gaseous CO2 is 0.0019 g/mL. What it the volume of gas produced when 15 mL of solid CO2 sublimes? 12,300 mL or 12.3 L

8) What is the mass of 2.25 moles of C3H8? 99.25 g

9) What is the mass of 1.64 x 1024 molecules of CO2? 119.89 g

10) A container containing 5 10) A container containing 5.00 L of a gas is collected at 100 K and then allowed to expand to 20.0 L. What must the new temperature be in order to maintain the same pressure 400 K