How many atoms are contained in 0.2moles of nitrogen? \([N_{A} = 6.02 \times 10^{23}]\)
A.
\(1.20 \times 10^{23}\)
B.
\(2.41 \times 10^{23}\)
C.
\(3.62 \times 10^{23}\)
D.
\(4.82 \times 10^{23}\)
Correct answer is A
\(1 mole = 6.02 \times 10^{23} atoms\)
\(0.2 moles = 6.02 \times 10^{23} \times 0.2\) atoms
= \(1.204 \times 10^{23}\)
\(\approxeq 1.2 \times 10^{23}\)
