162663 The heat of combustion of carbon to \(\mathrm{CO}_2\) is -393.5 \(\mathrm{kJ} \mathrm{mol}^{-1}\). The heat exchange in the formation of \(35.2 \mathrm{~g}\) of \(\mathrm{CO}_2\) from carbon and oxygen gas is:

162664 A gas is allowed to expand in a well insulated container against a constant external pressure of \(2.5 \mathrm{~atm}\) from an initial volume of \(2.50 \mathrm{~L}\) to a final volume of \(4.50 \mathrm{~L}\). The change in internal energy \(\Delta \mathrm{U}\) of the gas in joules will be:

162663 The heat of combustion of carbon to \(\mathrm{CO}_2\) is -393.5 \(\mathrm{kJ} \mathrm{mol}^{-1}\). The heat exchange in the formation of \(35.2 \mathrm{~g}\) of \(\mathrm{CO}_2\) from carbon and oxygen gas is:

162664 A gas is allowed to expand in a well insulated container against a constant external pressure of \(2.5 \mathrm{~atm}\) from an initial volume of \(2.50 \mathrm{~L}\) to a final volume of \(4.50 \mathrm{~L}\). The change in internal energy \(\Delta \mathrm{U}\) of the gas in joules will be: