Chemistry Examples

$B r_{2}$

Step 1

To find the mass of $1$ mole of $B r_{2}$ look up the atomic mass of each element and multiply it by the number of atoms contained in each element in the molecule.

mass of $1$ mole of $B r_{2}$ $=$ $2 (mass of Br)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $B r_{2}$ $=$ $2 (79.90000152)$

Step 3

Multiply $2$ by $79.90000152$ .

mass of $1$ mole of $B r_{2} = 159.80000305 g$