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Which of the following statement is correct? A) 28g of CO contains 12g of carbon and 16g oxygen  B)one mole of CO reacts completely with half mole of O2 C)N2 and CO have same molar mass    D) all of these 
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Asked by vrishti.8416 | 24 Feb, 2022, 15:30: PM
answered-by-expert Expert Answer
All of these statements are correct. Please check one by one.
 
(a) Molar mass of CO= Atomic mass of C + Atomic mass of O
                              = 12+16=28 g
So, We can say-  28g of CO contains 12g of carbon and 16g oxygen .
 
(b) Let's write balanced chemical equation when CO reacts with O2 
     CO space plus space 1 half straight O subscript 2 rightwards arrow CO subscript 2
So, from the stoichiometry of this balanced equation
We can say one mole of CO reacts completely with half mole of O2.
 
(c) M o l a r space M a s s space o f space N subscript 2 equals space 2 cross times A t o m i c space m a s s space o f space N equals 2 cross times 14 equals 28 M o l a r space M a s s space o f space C O equals space 12 plus 16 equals 28 space g
Answered by Ravi | 24 Feb, 2022, 17:54: PM
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