Question

(b) Find number of molecules in the following:
(i) 0.25 mole of oxygen gas,
(ii) 66 g Carbon dioxide.
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Answer 1

Answer:

0.25 mole of oxygen gas

Answer 2

Answer:

I. o^2 is known as oxygen so 16×2=32 moles in oxygen gas

so their will be 32×0.25=8 molecule