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When 0.6g of element J were completely burnt in oxygen and all the heat evolved was used to heat 500cm3 of water, the temperature of the water rose from 230C to 320C. Calculate the relative atomic mass of element J given that the specific heat capacity of water=4.2KJ-1g-1, density of water=1.0gcm-3 and molar
heat of combustion of J is 380Kjmol-1