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kolbaska11 [484]
3 years ago
5

What is the number of moles in 42 g of NaCl?

Chemistry
2 answers:
olganol [36]3 years ago
8 0
B. 0.72 mol NaCl

http://www.convertunits.com/from/grams+NaCl/to/moles
Masja [62]3 years ago
7 0

Answer : The correct option is, (B) 0.72 mole of NaCl

Solution : Given,

Mass of NaCl = 42 g

Molar mass of NaCl = 58.44 g/mole

Formula used :

\text{Moles of NaCl}=\frac{\text{Mass of NaCl}}{\text{Molar mass of NaCl}}

Now put all the given values in this formula, we get the moles of NaCl

\text{Moles of NaCl}=\frac{42g}{58.44g/mole}=0.718moles=0.72moles

Therefore, the number of moles of NaCl is, 0.72 moles

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