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Physics Chemistry

Entry Test MCQ :: Diagnostic Test


  The volume occupied by 1.4g CO at S.T.P is
[A]. 22.4 dm3[B]. 2.24 dm3
[C]. 1.12 cm3[D]. 1.12 dm3

Answer: Option D


chanda said:    
 
how plz make it explain for me.

Aliza said:    
 
Look first we have to find no. Of moles. no.of moles= mass in grams÷molar mass mass in g= 1.4g and molar mass= 12+16 = 28 So no.of moles = 1.4÷28 = 0.05 Now 1 mole of CO has the volume=22.414 SO 0.05 molesbof CO has the volume= 22.414×0.05=1.12 Hope it helps :)

ajab khan said:    
 
aliza well defined ...

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