A sample of K(s) of mass 3.041 g undergoes combustion in a constant volume calorimeter to produce K2O(s). The calorimeter constant is 1849 JK-1 , and the measured temperature rise in the inner water bath containing 1450 g of water is 1.776 K. Cwater = 4.184 J g-1 K -1 Calculate fH and fU for K2O.