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
128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.