Question

question 1 (10 points) what mass of oxygen atoms (o) contains 6.022×10²¹ atoms?
○ a 16.0g
○ b 1.60g
○ c 0.160g
○ d 160g

Explanation:

Step1: Find moles of O atoms

$n = \frac{6.022 \times 10^{21}}{6.022 \times 10^{23}} = 0.01\ \text{mol}$

Step2: Calculate mass of O atoms

$m = 0.01\ \text{mol} \times 16.0\ \text{g/mol} = 1.60\ \text{g}$

Answer:

b. 1.60g