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120cm3 of hydrogen were sparked with 60cm 3 of ... - WAEC Chemistry 1989 Question

120cm3 of hydrogen were sparked with 60cm 3 of oxygen at 110oC. What was the volume of stream produced? The equation for the reaction is 2H2(g) + O2(g) → 2H2O(g)
A
30cm3
B
60cm3
C
90cm3
D
120cm3
correct option: d
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