12. Solving a chemistry problem
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12. Solving a chemistry problem
1. What mass of Na2S2O3 * 5H2O should be taken for preparation:
a) 500.0 ml of a 0.02 N solution of this salt;
b) 200.0 ml of solution with Т(Na2S2O3/I2=0.006432 g/ml
c) 250.0 ml of solution with Т(Na2S2O3/Cu=0.001345 g/ml (1/zCu=1/1)
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