Question

What is the molar mass of calcium bromide?

Answer 1

`"199.89 g/mol"`

Explanation:

To find the molar mass of a compound, you have to first figure out the chemical formula.

The chemical formula of calcium bromide is `"CaBr"_2` because calcium has a `2+` charge and bromine has a `1-` charge, so you need two bromide anions to cancel out calcium's charge.

Next you have to locate the two elements on the periodic table and record their molar masses. Add calcium's mass plus bromine's `xx2` because you need to multiply times the amount of atoms of an element there are.

Here is the equation:

`"40.078 g/mol" + 2 xx ("79.904 g/mol") = "199.89 g/mol"`