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

a. 0.61 mol nacl
b. 0.72 mol nacl
c. 1.2 mol nacl
d. 1.8 mol nacl

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 :

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

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

the volume increases

your answer would be “dry”