the relative moleculer mass of Na2S2O3. SH2O
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158.11
Sodium thiosulfate
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Answer:
133
Explanation:
Atomic mass of
Na = 11
S = 16
O = 8
H = 1
moleculer mass of Na2S2O3. 5H2O
= (11×2) + (16×2) + (8×3) + 5×{(1×2) + 8}
= 22 + 32 + 24 + 5 × 10
= 78 + 55
= 133
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