What pressure (in torr) is exerted by 10.0 g of O2 in a 2.50 L container at a temperature of 27 degree C?
The pressure exercited by the gas will be
So, you know that you have a certain amount of gas, 10.0 g to be exact, in a 2.5-L container at
The number of moles of oxygen present in the container is
Since 1 atm is defined as being equal to 760 torr, you'll get
Rounded to two sig figs, the number of sig figs given for 27 degrees Celsius, the answer will be