First slide

Numericals involving moles, molecules and atoms

Question

1.5 gram atoms are present in

Moderate

A

1 mole of Carbon dioxide
B

0.375 moles of Sulphur trioxide
C

1.25 moles of Oxygen
D

0.5 moles of Methane

Solution

1 mole of CO₂= 3 gram atoms;
‘X’ moles of CO₂= 1.5 gram atoms ;
X= 0.5 ;
1 mole of SO₃= 4 gram atoms;
‘X’ moles of SO₃= 1.5 gram atoms ;
X= 0.375 ;
1 mole of O₂= 2 gram atoms;
‘X’ moles of O₂= 1.5 gram atoms ;
X= 0.75 ;
1 mole of CH₄= 5 gram atoms;
‘X’ moles of CH₄= 1.5 gram atoms ;
X= 0.3 ;

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