How many grams are in 6.58 10^-1 mol of calcium phosphate [Ca3(PO4)2 ]

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Why are people not able to scuba dive in the deep part of the ocean

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.