A tank contains a mixture of oxygen, carbon dioxide, and nitrogen gases has a total pressure of 1450 mmHg. The oxygen comprises 12.5% of the mixture. What is the partial pressure of the oxygen in
kPa?

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Which of these natural resources is non-renewable a.corn b.wind c.geothermal d.natural gas

Which example is a mechanical wave?     a.microwave    b.radio wave    c.water wave    d.ultraviolet light