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 Form 4 Energy Changes in Chemical and Physical Processes Questions and Answers

When 0.6g of element J were completely burnt in oxygen and all the heat evolved was used to heat #500cm^3# of water, the temperature of the water rose from #23^0C# to #32^0C#. Calculate the relative atomic mass of element J given that the specific heat capacity of water=#4.2KJ^(-1)g^-1#, density of water=#1.0gcm^-3# and molar
heat of combustion of J is #380Kjmol^-1#

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