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CBSE Class 11-science Answered

Calculate the total no. of atoms in 2 litre gaseous mixture of CH4 and SO2 at STP which have vapour density 26
Asked by Anil | 24 May, 2017, 03:01: PM
answered-by-expert Expert Answer
Molecular space weight space of space the space gas space equals space straight V. straight D space cross times space 2 space equals space 26 space cross times 2 space equals space 52 space straight g straight n space equals space PV over RT space equals space fraction numerator 1 space cross times space 2 over denominator 0.0821 space cross times space 272 end fraction space equals space 0.089 space mol Now comma Mass space of space mixture space equals space No. space of space moles space cross times space Molecular space weight space equals space 0.089 space cross times space 52 space equals space 4.63 space straight g Gram space atomic space weight space of space mixture space equals space Molecular space mass space of space CH subscript 4 space plus space Molecular space mass space of space SO subscript 2 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 16 space plus space 64 space equals space 80 space straight g Total space no. space of space atoms space equals space fraction numerator 4.63 over denominator 80 end fraction space cross times space 6.022 space cross times space 10 to the power of 22 space equals space bold 3 bold. bold 49 bold space bold cross times bold space bold 10 to the power of bold 22 bold space bold atoms
Answered by Arvind Diwale | 24 May, 2017, 04:32: PM

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CBSE 11-science - Chemistry
In this, if the options weren't there, couldn't it have been YX 2  (2 in subscript)
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Asked by drhimasingh | 22 May, 2020, 11:39: AM
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CBSE 11-science - Chemistry
2g Feso4 is completely oxidised by 0.05M kmno4.what volume of kmno4 is required？
Asked by nareshrajpurohit43109 | 22 May, 2020, 11:18: AM
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CBSE 11-science - Chemistry
Please solve the qustion in the attachment
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CBSE 11-science - Chemistry
Sir Q.no 3
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CBSE 11-science - Chemistry
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CBSE 11-science - Chemistry
ans with solutions
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Asked by anilsolanki2060 | 22 Feb, 2020, 10:12: AM
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CBSE 11-science - Chemistry
Q.no 3 =the relative abundance of various isotopes of silicon is as Si-28=92.23%, Si-29=4.67% & Si-30=3.10%. what is the average atomic mass of silicon.
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Asked by pujakurmi22 | 11 Nov, 2019, 10:59: PM
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CBSE 11-science - Chemistry
Vitamins C is essential fot prevention of scurvy combustion of 0.9g of vitamins C givez 0.2998g of Co2and 0.819g of H2OWhat is empirical formula of Vitamin C
Asked by jkatwara | 14 Oct, 2019, 12:21: PM
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CBSE 11-science - Chemistry
 A compound of lead has the following percentage composition: Pb = 90.66%, O = 9.34%. Calculate the empirical formula of the compound.(Pb =207,O=16 )
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CBSE 11-science - Chemistry
2 L of NH3 at 273K and 1 ATM pressure neutralised 134ml of a solution of H2SO4.What is the normality of the acid?
Asked by pb_ckt | 19 May, 2019, 11:56: PM
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