Question

How many moles of $N{a}^{+}$ ions are in 20 ml of 0.4 M $N{a}_{3}P{O}_4$ ?

• A. 0.008
• B. 0.024
• C. 0.05
• D. 0.20

Answer 1

Answer: (B)

$M=\frac{n}{V}\times 1000$

$n=\frac{Numberofatoms\times M\times V}{1000}$

Number of moles of $N{a}^{+}=0.4\times 20\times 3\times 10^{-3}=0.024$