October 2018 1 90 Report
7. Pembakaran sempurna gas etana (C2H6) menurut reaksi :

2C2H6(g) + 7O2 (g)  4CO2 (g) + 6H2O(g)

Memerlukan 15,68 liter gas oksigen (STP). Jadi massa gas C2H6 ( Mr=30) yang telah dibakar adalah ...

a. 30 gram d. 3 gram
b. 12 gram e. 0,6 gram
c. 6 gram

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