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Nurse Antonio measured out 7 grams of sodium chloride (NaCI). Using dimensional analysis, calculate how many moles of NaCI he weighed out.

User EricLeaf
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1 Answer

1 vote

Answer:

0.119 moles

Step-by-step explanation:

Given that,

Mass measured by Nurse Antonio is 7 grams of NaCl

To find,

The no of moles of NaCl

Solution,

The number of moles is given by


n=(m)/(M)

m is given mass

M is molar mass

For NaCl, molar mass is 23+35.5 = 58.5 grams

So,


n=(7)/(58.5)\\\\n=0.119\ \text{moles}

Therefore, there are 0.119 moles of NaCl.

User Metersk
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