August 2018 1 50 Report
Gas Etana C2H5 Mr=30 sebanyak 30 gram direaksikan dengan gas Bromin, Br2 hingga gas etana habis dan ternyata hanya menghasilkan 94 gram C2H4Br2 (mr-188) dan X gram C2H2Br4 (mr=346). Setelah dihitung, maka massa c2h2br4 adalah..
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