Question

solve this pls for 20 points dont spam. and those who don't know answer stay away!!​

Answer 1

Molecular mass of Mg(NO3)2.6H2O.= 24+(14×2+16×3×2)+(6×2×1+16×6)

                                                            =24+(28+96)+(12+96)

                                                            =24+124+108

                                                            =256g

Molecular Mass of oxygen=96+96

                                           =192

Percentage of oxygen=192/256×100

                                    =75%

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Answer 2

Answer:

75%

Explanation:

In the below image