Question

Molecular mass of sodium
carbonate is 106. Number of
moles present in 21.2 g of sodium
carbonate will be a
a) 1​

Answer 1

Answer:-

• Molecular mass of Sodium carbonate=106g
• Amount of Sodium carbonate=21.2g

We know that

$\boxed {\sf Number\:of\:moles=\dfrac{Volume}{Molecular\:Mass}}$

$\\ \rm\longmapsto Number\:of\;moles\:of\:Na_2CO_3=\dfrac{21.2}{106}$

$\\ \rm\longmapsto Number\:of\;moles\:of\:Na_2CO_3=0.2moles$