Chapter 5 Bonus Questions 1. Convert 875 torr to atm. 2. Convert 0.825 atm to mm

Question

Chapter 5 Bonus Questions

1. Convert 875 torr to atm.

2. Convert 0.825 atm to mmHg.

3. Convert 24.6°C to K.

Questions 4 and 5 refer to a tank of helium gas.

4. A helium gas tank has a pressure of 81.6 atm at 25°C. The volume of the tank is 29.5L. How many moles of helium are in the tank?

5. If all of the helium was released into a large plastic balloon at a constant temperature and the pressure of the gas drops to 6.00 atm, what would be the volume of the balloon after it expands?

6. A car tire at has a pressure of 2.5 atm at 30°C. What would the tire pressure be at 20°C, assuming the volume of the tire and the amount of air within stays constant?

7. What is the density of oxygen (O2) gas at 25°C and 1 atm? Questions 8 & 9 focus on the use of baking soda in breads.

8. The release of CO2 from the decomposition of baking soda causes breads to rise. 2NaHCO3 (s) Na2CO3(s) + H2O (l) + CO2(g) If the recipe uses 5.00g of baking soda, what number of moles (n = ?) of CO2 will be formed?

9. If the oven is at 200°C and the pressure is 1 atm, what is the volume of CO2 released?

10. A lab studying air pollution made a mix of 2.00g nitrous oxide (N2O), 3.00g sulfur dioxide (SO2), and 1.00g carbon monoxide (CO) in a sealed container. If the mixture has a pressure of 0.22 atm, what is the partial pressure of sulfur dioxide?

Explanation / Answer

1)1.150ATM

2) 189.99mmHg

3) 6579.6 k

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