93. Solving a chemistry problem
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3. What mass of Na2S2O3*5H2O should be taken to prepare:
250.0 ml of solution with T(Na2S2O3/Cu=0.00750 g/ml (1/zNa2S2O3=1/1, 1/zCu=1/1)
250.0 ml of solution with T(Na2S2O3/Cu=0.00750 g/ml (1/zNa2S2O3=1/1, 1/zCu=1/1)
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