Question

Kimia.1.FT





ma'annajah

Answer 1

Verified answer

CaH2 + 2 H2O => Ca(OH)2 + 2 H2
massa CaH2 = 12,6 gr
Mr CaH2 = 42
mol CaH2 = 12,6 gr / 42 gr/mol = 0,3 mol
perbandingan koefisien reaksi CaH2 : H2 = 1 : 2
mol H2 = 2/1 x mol CaH2 = 2/1 x 0,3 mol = 0,6 mol
Mr O2 = 32
mol O2 = 16 gr / 32 gr/mol = 0,5 mol

V H2 / mol H2 = V O2 / mol O2
V H2 = V O2 x mol H2 / mol O2
V H2 = 10 x 0,6 / 0,5
V H2 = 12,0 L (E)

Answer 2

Verified answer

Stoikiometri
Konsep Mol

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