Homes may be heated by pumping hot water through radiators. What mass of water will provide the same amount of heat when cooled from to , as the heat provided when 95.0 g of steam is cooled from to ? Use for the specific heat capacity of water and for the specific heat capacity of steam.
Joseph Priestley prepared oxygen in 1,774 by heating red mercury(II) oxide with sunlight focused through a lens. How much heat is required to decompose exactly 2 mol of red to and under standard conditions? The standard enthalpy of formation of is kJ/mol.
The enthalpy of combustion of hard coal averages kJ/g, and that of gasoline is kJ/gal. How many kilograms of hard coal provide the same amount of heat as is available from 1.0 gallon of gasoline?