[جناان]

هيا مو تجربة هيا سؤال


1- How many grams of glucose are needed to make 100 ml of a 0.6 mol/l solution? (MW glucose = 180).

2- How can you prepare 0.1 M NaOH solution?

3- Describe the preparation of 5 L of 0.1 M Na2CO3 (MW = 105.99) from the primary standard solid.