A student measures out 45.62g of sodium chloride on a laboratory scale. How much mole of sodium chloride have they weighed ?

1 Answer
Feb 13, 2018

#~~0.78# moles

Explanation:

Sodium chloride has a molar mass of #58.4g"/"mol#.

We use the following equation to figure out the moles:

#"moles"="mass"/"molar mass"

#:."moles"=(45.62cancelg)/(58.4cancelg"/"mol)~~0.78mol#

So, the student weighed approximately #0.78# moles of sodium chloride.