It's A. volume
Pressure =

with const depends on the chosen unit of volume
I think so...
Three elements that are likely to have similar chemical and physical properties are
Answer: Since this is merely a Physical Change, it is improper to write it as a chemical equation.
Percent yield is expressed as the ratio of the actual yield and the theoretical yield of the reaction multiplied by 100 to get the percent value. The actual yield is usually given in a problem. The theoretical yield is calculated from the reaction. For this problem, it cannot be solved since we cannot obtain the theoretical yield.