Answer :
6.69*10⁻²² is the answer, first you find the molar mass then turn atoms to moles then moles to grams then you get the answer! :)
Mass of 2.01×[tex]10^{22}[/tex] atoms of mercury is 6.697 grams
Calculation:
- 1 mole of Hg contains 6.02×[tex]10^{23}[/tex] atoms and it's molar mass is 200.59 grams
so, we can write it as..
if 6.02×[tex]10^{23}[/tex] atoms are ≡ 200.59 grams,
so, 2.01×[tex]10^{22}[/tex] atoms are ≡ ? grams
=2.01×[tex]10^{22}[/tex]×200.59 grams ÷ (6.02×[tex]10^{23}[/tex])
=6.697 grams
∴ Mass of 2.01×[tex]10^{22}[/tex] atoms of mercury is 6.697 grams.
Learn more about mole concept here..
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