Question

calculate the number of molecules in 4 g of oxygen

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Answer 1

Answer:

To calculate the number of molecules in 4g of oxygen, we have,

Moles of oxygen = 4/32 = 0.125mol,

Molecules of oxygen = 0.125 * 6.022 * 10^23 = 7.52 * 10^22.

Oxygen's atomic weight is 16.00 amu where 1 mole of oxygen is

6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g.

Explanation:

Answer 2

Answer:

1/8* avagardo no.

Explanation:

U see

O2 molecular mass is 32

I mole contains 6.022* 10to the power of 23

Now according to the question

The no.of moles is

4/32 that is 1/8 moles

Use cross multiplication method and get the answer

Hope it was helpful

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