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Question
How many moles of oxygen atoms are there in 1.2×1022 sulphur dioxide molecules?
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Solution
GIVEN
nof molecules of SO2=1.2*10^22
No.of moles =(No. Of molecules)/(avogadro number)
no of moles of SO2 =(1.2*10^22)/(6.022*10^23)
no of moles of SO2=0.0199 mole
Formula of sulfur dioxide =SO2
No.of Oxygen atoms present in 1 molecule of SO2=2
Moles of Oxygen atoms present in SO2 = 2×0.0199 ⇒ 0.0398 mole
GIVEN
nof molecules of SO2=1.2*10^22
No.of moles =(No. Of molecules)/(avogadro number)
no of moles of SO2 =(1.2*10^22)/(6.022*10^23)
no of moles of SO2=0.0199 mole
Formula of sulfur dioxide =SO2
No.of Oxygen atoms present in 1 molecule of SO2=2
Moles of Oxygen atoms present in SO2 = 2×0.0199 ⇒ 0.0398 mole
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