October 2018 1 67 Report
1. setarakan persamaan reaksi sederhana berikut ini
a. N2(g)9 + H2(g) => NH3(g)
b. C2H2(g) + O2(g) => CO2(g) + H2O(l)
c. N2O5(g) + H2O(l) => HNO3(aq)
d. Ca(OH)2(s) + HBr(aq) => CaBr2(aq) + H2O(l)
e. HCl(aq) + MnO2(s) => MnCl2(aq) + H2O(g) + Cl2(g)
2. zat nikotin mempunyai komposisi : 74,0% karbon , 8,7% hidrogen , dan 17,3%nitrogen (Ar: C=12,H=1,N=14)
a. tentukan rumus empiris nikotin
b. tentukan rumus molekul nikotin jika diketahui Mr nikotin adalah 162
tolongg ya , thx.
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