1. A steel cylinder with a volume of 15.0L is filled with 80.4g of nitrogen gas at 25C. What is the pressure, in atmospheres, of the N2 gas in the cylinder?
2.When sensors in a car detect a collision, they cause the reaction of sodium azide, NaN3, which generates nitrogen gas to fill the air bags within 0.03 s. How many liters of N2 are produced at STP if the air bag contains 145g of NaN3 ?
2NaN3(s)→2Na(s)+3N2(g)
3. If the He injected into the abdomen produces a pressure of 14mmHg and a volume of 3.0L at 25C, how many grams of He were used?