Asked by will

sodium reacts completely with 0.142kg of chlorine, forming 234g of sodium chloride. What mass of sodium reacted?

I know that for chemical changes the amounts should end up being equal, but I don't know how to set up the problem.
Answered by Damon
It is the number of atoms, or moles, of Na which is equal to the number of atoms, or moles, of Cl in NaCl
Na = 23 grams/mol
Cl = 35.5 grams/mol

NaCl = 58.5 grams/mol

so if we ended up with 234 grams ofNaCl, that was 4 mols of NaCl

That requires 4*23 = 92 grams of Na
and
That requires 4*35.5 = 142 grams of Cl, sure enough
Answered by anita
92.0
Answered by Student
92 is the correct answer.
Answered by jones
124
Answered by Someone
92.0g
Answered by emerald
92.0g
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