how many oxygen atoms are there in 90 grams of water?
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1 molecule of H2O has 1 atom of oxygen.
Firstly we will calculate the number of atoms in 90g of H2O.
Step I:-
No.of moles of H2O=
given mass/molar mass
No. of moles = 90/18 = 5 moles
No. Of molecules =
No. of moles x avogadro number
=5 x 6.022x10^23
hope this helps you❤
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