Question

26. Calculate the number of molecules in 4 g of oxygen .

Answer 1

Answer:

4g of oxygen have 7.52 ×10^22 number of molecules.

Explanation

Given that mass of oxygen is 4g.

We know that 32g of oxygen have 6.022×10^23 numbers of molecules.

So number of molecules in 4g oxygen= 4×6.022×10^22/32

= 7.52×10^22

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