Question

Calculate the percentage mass of water in Epsom salt MgSO4.7H2O

Answer 1

Answer:

51.12%

Explanation:

MM of MgSO4.7H2O = 246.47g/mol

Mass of Water in MgSO4.7H2O= 7*(2+16)

                                                    =126g

Therefore, Mass% of Water= 126/246.47*100

                                            = 51.12%