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CBSE Class 11-science Answered

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Asked by anilsolanki2060 | 22 Feb, 2020, 10:12: AM
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Option (A) is correct.
 
Given:
 
Density of CO2 = 0.44 g/cm−3 
 
We know,
 
1 mole of CO2 = 6.022 × 1023 molecules
 
6.022 × 1023 molecules = 44 gm of  CO2 
 
Mass of one molecules of  CO2 equals fraction numerator 44 over denominator 6.022 cross times 10 to the power of 23 end fraction
 
                                             equals 44 over straight N space
Density equals Mass over Volume
 
Volume
 
 
          equals Mass over Density equals fraction numerator begin display style bevelled 44 over straight N end style over denominator 0.44 end fraction
 
 
 
We have,
 
For critical volume
 
    space space space straight V subscript straight c equals space 3 cross times 4 over 3 πr cubed fraction numerator begin display style bevelled 44 over N end style over denominator 0.44 end fraction equals space 3 cross times 4 over 3 cross times πr cubed space space space space space space straight r cubed space equals space fraction numerator 44 over denominator 0.44 cross times 4 straight pi cross times straight N end fraction space space space space space space straight r cubed space equals 25 over πN
Answered by Varsha | 24 Feb, 2020, 11:20: AM

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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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Asked by d6knx7qmw1 | 15 May, 2020, 10:37: PM
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CBSE 11-science - Chemistry
Sir Q.no 3
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Asked by sahadipa1975 | 02 May, 2020, 08:53: AM
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CBSE 11-science - Chemistry
what is the mole fraction of alcohol in 10% of alcohol w/w in water ?
Asked by abhishek19362771 | 08 Apr, 2020, 03:48: PM
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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 )
Asked by vikas.kochhar6 | 30 Aug, 2019, 03:58: PM
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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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