Question

Are there formulas to solve the following problem?

Complete the following table by replacing question marks with the correct numbers: (Note: Each horizontal row is a separate example, so in row #1, 175.32 grams of NaCl is how many moles of NaCl and how many molecules of NaCl does it contain?)
Grams of NaCl Moles of NaCl Number of molecules of NaCl
175.32 ? ?
? 0.333 ?
? ? 6.02 x 1023

Answer 1

Yes there are.
mols = grams/molar mass
and 1 mol of anything(NaCl for example) contains 6.02E23 molecules of anythings (molecules NaCl for example)
The two facts will work all of the question marks although some of the equations must be rearranged.