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)

If you cannot open the file or have any problems, do not rush to leave a negative review! Contact me and I will quickly help you solve the problem. After purchasing, please leave a positive review of the product :)