The molar mass of NaCl is 58.44 g/mol. How many molecules of NaCl are there in 10 g of NaCl? (use avogadro's number)

Answer 1

To find the number of molecules of NaCl in 10 g of NaCl, we first need to convert grams to moles using the molar mass of NaCl.

10 g NaCl * (1 mol NaCl / 58.44 g NaCl) = 0.171 mol NaCl

Next, we use Avogadro's number to find the number of molecules in 0.171 mol of NaCl:

0.171 mol NaCl * (6.022 x 10^23 molecules / 1 mol) = 1.03 x 10^23 molecules

Therefore, there are approximately 1.03 x 10^23 molecules of NaCl in 10 g of NaCl.