Question on: WAEC Chemistry - 1999
30cm3 pf hydrogen at s.t.p combine with 20cm3 of oxygen to form steam according to the following equation 2H2(g) + O2(g) → 2H2O(g). Calculate the total volume of the gaseous mixture at the end of the reaction
A
50cm3
B
35cm3
C
30cm3
D
25cm3
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Correct Option: B
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