If 1 mole of lithium fluoride (LiF) weighs 26 g, how many moles are in 260 g of LiF?

Question

The mole is a unit of measurement used to describe the amount of a chemical substance. The number of moles can be calculated by dividing the mass of a chemical compound by the mass of 1 mole. If 1 mole of lithium fluoride (LiF) weighs 26 g, how many moles are in 260 g of LiF? Round your answer appropriately.

Number of moles=

________

Answer 1

Hi. In order to answer this question, we are going to use a method of converting units called dimensional analysis. First, we should set up what we know

We know that: 1 mol LiF = 26 g LiF

What do we want to know: 260 g LiF = ? mol LiF

We can start with our 260 g LiF

We calculate:

260 g LiF 1 mol LiF

------------- x -------------- = 10 mol LiF

1 26 g LiF

Therefore, 10 moles of LiF is our answer.