Question

calculate the number of molecules in 8gm oxygen

correct answer will be marked as brainliest!!​

Answer 1

Answer:

Given:

8 g of O₂

To Find:

Number of molecules of O₂ = ?

Solution:

Number of moles in 8g of O₂ will be:

= \frac{8}{32}=

32

8

=0.25 \ moles=0.25 moles

Now,

Number of molecules will be:

=0.25\times 6.02\times 10^{23}=0.25×6.02×10

23

=1.5\times 10^{23}=1.5×10

23

So that the no. of molecules will be "1.5 × 10²³".

Explanation:

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Answer 2

Molar mass of oxygen = 16 g. 32 g of oxygen = 1