Question

what is the weight of 0.1 moles of $N{a}_{2}C{O}_3$

• A. 10 g
• B. 5 g
• C. 10.6 g
• D. 12.6 g

Answer 1

The correct option is C 10.6 g

molar weight of

Na is 23, C is 12, and O is 16

molar weight of $N{a}_{2}C{O}_3$ is 106gm

Now apply a very simple formula

moles =$\frac{weight}{molarmass}$

0.1=$\frac{weight}{106}$

Weight=10.6g

finally, we will get weight is 10.6 gm

so the answer is C