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secondary 3 | Chemistry
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Isaac Philips
Isaac Philips

secondary 3 chevron_right Chemistry

Help me with mole concept question.

Date Posted: 7 years ago
Views: 433
Jarrod Lim
Jarrod Lim
7 years ago
Hola Issac,

Remember that every MOLE of atoms is 6X10^23 atoms.

MOLE is like a quantifier (dozen = 12, carton =24). Mole = 6X10^23

So 0.125 mole of oxygen molecules is
0.125 X 6 X 10^23 = 7.5 X 10^22 molecules.

Each oxygen molecule has 2 atoms (O2). So 0.125 mole of oxygen molecules have
7.5 X10^22 X 2 = 1.5 X 10^23 atoms

Concept! =)

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Joey Poong
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