One mole of oxygen gas at STP is equal to____ .

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asked Mar 5, 2018 in Class XI Chemistry by vijay Premium (536 points)

 One mole of oxygen gas at STP is equal to____ .
(a) 6. 022 x 1023 molecules of oxygen
(b) 6.022 x 1023 atoms of oxygen
(c) 16 g of oxygen .
(d) 32 g of oxygen  

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answered Mar 5, 2018 by rahul152 (-2,842 points)

(a,d) 1 mole of 02 gas at STP = 6.022 x 1023 molecules of 02 (Avogadro number) = 32 g of 02. Hence, 1 mole of oxygen gas is equal to molecular weight of oxygen as well as Avogadro number.

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answered Jul 10, 2018 by Kuldeep Gaur Basic (24 points)
22.4 lit contain no. Of atoms=NO.OF AVOGADRO
1 LIT. =NA/22.4
5.6 LIT. =NA/22.4*5.6

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