1. Exercise 11.79
A gas mixture contains 74% nitrogen and 26% oxygen.
If the total pressure is 1.18 atm what are the partial pressuresof each component?
Express your answers using two significant figures. Enter youranswers numerically separated by a comma.
2. Chapter 11 Question 11 - Algorithmic
What is the molecular weight of a gas if a 21.0 g sample has apressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R= 0.0821 Latm/ mol K)
What is the molecular weight of a gas if a 21.0 g sample has apressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R= 0.0821 Latm/ mol K)
| 243 amu |
| 234 amu |
| 1.89 amu |
| 11.1 amu |
| none of the above |
3. Exercise 11.91
CH3OH can be synthesized by the reaction:
CO(g)+2H2(g)→CH3OH(g)
Part A
How many liters of H2 gas, measured at 748 mmHg and 83 ∘C, arerequired to synthesize 0.53 molof CH3OH?
Part B
How many liters of CO gas, measured under the same conditions,are required?
Express your answer using two significant figures.
4. Exercise 11.97
How many grams of calcium are consumed when 160.4 mL of oxygengas, measured at STP, reacts with calcium according to thefollowing reaction?
2Ca(s)+O2(g)→2CaO(s)
