(a) Using data from Table 7.1, find the mass destroyed when the energy in a barrel of crude oil is released. 

(b) Given these barrels contain 200 liters and assuming the density of crude oil is 750 kg/m³, what is the ratio of mass destroyed to original mass, Δm/m?

Data from Table 7.1

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Big Bang Object/phenomenon Energy released in a supernova Fusion of all the hydrogen in Earth's oceans Annual world energy use Large fusion bomb (9 megaton) 1 kg hydrogen (fusion to helium) 1 kg uranium (nuclear fission) Hiroshima-size fission bomb (10 kiloton) 90,000-metric ton aircraft carrier at 30 knots 1 barrel crude oil 1 ton TNT Energy in joules 1068 1044 1034 4x1020 3.8×10¹6 6.4×10¹4 8.0x10¹3 4.2x1013 1.1x10¹0 5.9×10⁹ 4.2×10⁹