Question

How many moles are present in 10.5 grams off NaCl

Answer 1

To convert weight to moles, we must use the molar weight found on the periodic table. Sodium (Na) has a molar weight of 22.99 g/mol. So let's set up an equation and cancel out units:

`(1mole)/(22.99g)*10.5g=0.4567mol=4.57*10^(-1)mol`

So now we know that 10.5g of sodium is equal to 0.4567 moles.