ممكن مساعدتكم لو سمحتوا

[همسه،،]

ممكن اعرف حل هالمسألتين::
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.