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How many atoms are contained in 0.2moles of nitrogen? \([N_{...

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.

$4.82 \times 10^{23}$

View answer & explanation

Correct answer is A

$1 mole = 6.02 \times 10^{23} atoms$

$0.2 moles = 6.02 \times 10^{23} \times 0.2$ atoms

= $1.204 \times 10^{23}$

$\approxeq 1.2 \times 10^{23}$

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