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. One mole of hydrogen gas burns in excess of oxygen to give
290 kJ of heat. What is the amount of heat produced when 4 g
of hydrogen gas is burnt under the same conditions?
(a) 145 kJ
(b) 290 kJ
(c) 580 kJ
(d) 1160 kJ
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Answer Posted / indra kant jha
1 MOLE=ATOMIC WEIGHT OF HYDROGEN (H2)=1*2=2GMS.
SINCE 2gms of hydrogen produced heat of 290kj
hence 1gms of hydrogen produced heat of 290/2 kj
hence 4gms of hydrogen will produce heat of 290/2*4=580kj.
| Is This Answer Correct ? | 23 Yes | 2 No |
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