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  • Stage 1

    Answer 4 questions correctly in a row.

Sodium metal
(
Na
)
reacts with chlorine gas
(
Cl
2
)
to produce sodium chloride
(
Na
Cl
)
,
or table salt.
2
Na
(s)
+
Cl
2
(g)
2
Na
Cl
(s)
Which expression can be used to determine the mass of
Cl
2
needed to completely react with 2.4 grams of
Na
?
The molar mass of
Na
is 22.99 grams per mole, and the molar mass of
Cl
2
is 70.90 grams per mole. Consider molar masses to be exact values.
Calculate the mass of
Cl
2
needed.
Write your answer to the correct number of significant figures. Round if necessary.
 grams
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