Hitunglah perbandingan massa unsur-unsur dalam masing-masing senyawa berikut: a. CaCO3 b. MgSO4 c. CaBr2 d. NH4NO3 e. CH3COOH
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b) Mg : S : O = 24 : 32 : 64 = 3 : 4 : 8
c) Ca : Br = 40 : 160 = 1 : 4
d) N : H : O = 28 : 4 : 48 = 7 : 1 : 12
e) C : H : O = 24 : 4 : 32 = 6 : 1 : 8
Ket : Ar (Ca = 40, C= 12 , O = 16 , Mg = 24 , S = 32 , Br = 80 , H = 1)
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