Step 1: Alright, so when converting, you set up a chart like the one below.
Step 2: Fill in your units. Say that I have 3.7 moles of lithium bromide. I would put 3.7 moles of lithium bromide in the top left box.
Step 3: You always have the same units diagonal. So the bottom right box will also be moles of Lithium Bromide. You are searching for one mole, so you put one.
Step 4: Next you figure out the molar mass by adding the masses of Lithium and Bromine together. This is grams, and goes in the top right hand side.
Step 5: Now you multiply straight across the top, and divide by the bottom.
Step 6: Take your answer, then use sig figs to round to the least amount of decimal places.