60 points + brainliesta sample of sodium chloride (nacl) has a mass of 30.22 g. • a) calculate the number of moles of nacl in the sample. show work • b) calculate the number of moles of each element in nacl in the sample. show work • c) calculate the number of atoms of each element in nacl in the sample. show your work and highlight your final answer.

A) All of your answers will come from a combination of the periodic table and a little bit of math.

To calculate #of moles in NaCl, you need to look at their masses on the periodic table

Na ~ 23g
Cl ~ 35.5g

So, if one mol is Na is 23g and one mol of Cl is 35.5g, then the molar mass of NaCl must be Na+Cl

Na+Cl = 78.5g

1 mol of NaCl is 78.5g so if you have less than that in grams, you have <1 mol

To get the exact amount, you’ll do a conversion

30.22g of NaCl / 78.5g NaCl is .38 mols

B) is a confusing question. It could technically be 23g and 35.5g; however, i suspect, that you could say that because NaCl is 1 to 1, that each one gets 50% of the compound...meaning each one would be .19 mols...or you could try doing conversions like the one above, but with the individual atoms.

C) do a conversion with Avogadro’s number 6.02 x 10^23 g/mol

Sorry, my physics class is about to start. Hope this helped.

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