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2H2(g)+O2(g) ---> 2H2O(l)
delta H= -572kJ/mole of O2

Calculate the amount of heat evolved when 10g of hydrogen are burned in excess oxygen.

  • Chem - ,

    572 kJ/mol O2 = 572 kJ/32g O2 = 572 kJ/4g H2.
    572 kJ x (10/4) = ? kJ.

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