An experimental spacecraft consumes a special fuel at a rate of 2.10 × 102 L/min. The density of the fuel is 0.690 g/mL and the standard enthalpy of combustion of the fuel is –39.8 kJ/g. Calculate the maximum power (in units of kilowatts) that can be produced by this spacecraft. 1 kW = 1 kJ/s

Answer 1

You have 210 L/min Convert that to L/sec, use density to convert to g/sec and convert that to kJ/sec with enthalpy of combustion. Won't that answer be in kJ/sec = KW.