An energy of 4.5 kW h is released as heat when 1.0 kg of fuel is completely burned. What is the mass equivalent of this energy (the mass lost during the burning of 1.0 kg of this fuel)?
0 kg0\text{ kg}0 kg
5.0×10−14 kg5.0 \times 10^{-14}\text{ kg}5.0×10−14 kg
1.8×10−10 kg1.8 \times 10^{-10}\text{ kg}1.8×10−10 kg
5.0×10−5 kg5.0 \times 10^{-5}\text{ kg}5.0×10−5 kg
