Question

How many molecules would be there in 0.01 moles of sodium hydroxide?

• A. $6.023\times {10}^{23}$
• B. $6.023\times {10}^{21}$
• C. $6.023\times {10}^{22}$
• D. $6.023\times {10}^{20}$

Answer 1

The correct option is B $6.023\times {10}^{21}$

No. of atoms in 1 mole of NaOH = $N_A=6.02\times {10}^{23}$

$\therefore$ No. of atoms in 0.01 moles of NaOH = $6.02\times {10}^{23}\times 0.01=6.02\times {10}^{21}$

Hence, option B is correct.