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Calculate the Number of Molecules in 4 G of Oxygen. - Science

Short Note

Calculate the number of molecules in 4 g of oxygen.

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Solution

Mass of oxygen = 4g

We know that 32g of oxygen contain 6.022 × 1023 molecules.

Number of molecules in 32g of oxygen = 6.022 × 1023

Number of molecules in 4g of oxygen = 4 × 6.022 × 1023/32

Hence, 4g of oxygen have 7.52 × 1022 molecules.

Concept: Atoms and Molecules Numericals
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APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Short Answers | Q 26 | Page 173
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