Question

plz answer my question I will mark you as BRAINLIEST ....!!!!
plz answer in detail....!!​

Answer 1

Answer:

5.31×10−3g

Explanation:

6.022×1023 molecules of oxygen weigh = 32 g

1.0 molecule of oxygen weighs =326.022×1023=5.31×10−23g

∴ Mass of $10^{20}$ molecules of oxygen =5.31×10−23×$10^{20}$

=5.31×$10^{-3}$g.