An hourly energy requirement of an astronaut can be satisfied by the energy released when 34 grams of suncrose `(C_(12)H_(22)O_(11) `are burnt in his body.How many grams of oxygen would he need to be carried in space capsule to meet his requirement for one day?

Gasoline has an enthalpy of combustion 24000 kJ/mol gallon. When gasoline burns in an automobile engine, approximately 30% of the energy released is used to produce mechanical work. The remainder is lost as heat transfer to the engine's cooling system. As a start on estimating how much heat transfer is required, calculate what mass of water could be heated from 25^(@)C to 75^(@)C by the combustion of 1.0 gallon of gasoline in an automobile? (Given : C(H_(2)O)=4.18 J//g^(@)C ) a) 34.45 kg b) 80.383 kg c) 22 kg d) 224 kg