The density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm3. what is that density in pounds per cubic inch?

222.86 g/inch
The density is count by dividing mass by volume. In this case, the volume is changed from cm3 into cubic inch. First, you need to convert cm3 to cubic inch, which was 1cm3= 0.0610237 cubic inch. 
Then the calculation will be 13.6g/0.0610237 cubic inch= 222.864231438

He can play two games. 13/4=3.253.25*2=6.5

Gas will most likely  fill the container