Question

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Answer 1

3) Alternativa B

H2SO4

H = 1 × 2 = 2

S = 32 × 1 = 32

O = 16 × 4 = 64

MM = 98u

H4P2O7

H = 4 × 1 = 4

P = 2 × 31 = 62

O = 7 × 16 = 112

MM = 178u

Al2(SO4)3

Al = 2 × 27 = 54

S = 3 × 32 = 96

O = 12 × 16 = 1o2

MM = 342u

Ca3[Fe(CN)6]2

Ca = 3 × 40 = 120

Fe = 2 × 56 = 112

C = 12 × 12 = 144

N = 12 × 14 = 168

MM= 544u