Please answer ALL 3 questions and provide explanations :)
4. A given mass of oxygen at room temperature occupies a volumeof 500.0 mL at 1.50 atm pressure. What will be the pressure if thevolume is reduced to 150.0 mL?
5. Gases are sold in large cylinders for laboratory use. Whatpressure, in atmospheres, will be exerted by 2,500 g of oxygen gas(O2) when stored at 22°C in a 40.0 L cylinder?
6. Consider the following reaction at STP:
CuO(s) +H2(g) -> Cu(s) + H2O(g)
If 40.0 g of CuO react with an excess of H2, how manyliters of H2O will be produced?
