One mole of hydrogen gas burns in excess of oxygen to give 290 kJ of heat. What is the amount of heat produced when 4g of hydrogen gas is burnt under the same conditions?

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Accepted Answer

580 kJ. 1 mole= 2g of hydrogen molecules Therefore 4g= 2 moles Hence heat produced while burning 4g of hydrogen= 290 × 2 = 580 kJ

One mole of hydrogen gas burns in excess of oxygen to give 290 kJ of heat. What is the amount of heat produced when 4g of hydrogen gas is burnt under the same conditions?

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