Քիմիա 8

H2CO3 = Mr = H2CO3 = 1 x 2 + 12 x 1 + 16 x 3 = 62

H2 = 1 x 2 / 62 x 100 = 3

C = 12 x 1 / 62 x 100 = 19

O3 = 16 x 3 / 62 x 100 = 77

62 + 3 + 19 + 77 = 161

H2SO4 = Mr = H2SO4 = 1 x 2 + 32 x 1 + 16 x 4 = 98

H2 = 1 x 2 / 98 x 100 = 2

S = 32 x 1 / 98 x 100 = 32

O4 = 16 x 4 / 98 x 100 = 65

98 + 2 + 32 + 65 = 197

CaCO3 = Mr = 40 x 1 + 12 x 1 + 16 x 3 = 100

Ca = 40 x 1 / 100 x 100 = 40

C = 12 x 1 / 100 x 100 = 12

O3 = 16 x 3 / 100 x 100 = 48

100 + 40 + 12 + 48 = 200

K2CO3 =

P2O3 =

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