Question

student requires hard water for an experiment by using which Salt from laboratory the distilled water can made heard option number a Calcium sulphate, calcium carbonate option B calcium sulphate, calcium chloride of celibacy sodium chloride calcium carbonate option number sodium sulphate, calcium sulphate​

Answer 1

Answer:

Explanation:

If hard water is not available it can be made in the laboratory by dissolving a little of calcium salt or magnesium salt in a beaker of water. The calcium and magnesium salts that can be used here are: calcium hydrogen carbonate, calcium sulphate, calcium chloride, magnesium hydrogen carbonate, magnesium sulphate or magnesium chloride.

Answer 2

• yfv
• hfg
• gfv
• ggf
• bhbh
• hgjjjnnnn
• hgg