একটি উদ্বায়ী পদার্থের বাষ্পের ঘনত্ব হল `4(CH_(4)=1)`। এর আণবিক ওজন হবে:

1 mol of CH_(4) contains

Vapour density of a volatile substance is 4(CH_(4)=1) . Its molecular weight would be:

Two equal volume flasks cotaining equal masses of H_(2) and CH_(4) are at 100 K and 200 K , repectively. The molecular diameter of CH_(4) is twice that of H_(2) . ( i ) Which of the following statement about Z_(1) (number of collisions per molecule per cm^(3) per second) is true? ( a ) Z_(11) of H_(2)=2Z_(1) of CH_(4) ( b ) Z_(11) of H_(2)=4Z_(1) of CH_(4) ( c ) Z_(11) of H_(2)=Z_(1) of CH_(4) ( d ) Z_(11) of H_(2)=8Z_(1) of CH_(4) ( ii ) Which of the following statement about Z_(11) (number of bimolecular collisions per cm^(3) per second) is true? ( a ) Z_(1) of H_(2)=4Z_(11) of CH_(4) ( b ) Z_(11) of H_(2)=8Z_(11) of CH_(4) ( c ) Z_(1) of H_(2)=16Z_(11) of CH_(4) ( d ) Z_(1) of H_(2)=32Z_(11) of CH_(4)

Calculate relative rates of effusion of SO_(2) to CH_(4) in the mixture obtained by effusing out a mixture with initial molar ratio (n_(SO_(2)))/(n_(CH_(4)))=(8)/(1) for three effusing steps.

Select the chain propagation steps in the free-radical chlorination of methane. (1) Cl_(2) to 2Cl^(*) (2) Cl^(*) + CH_(4) to CH_(3)Cl + H^(*) (3) Cl^(*) + CH_(4) to CH_(3)^(*) + HCl (4) H^(*) + Cl_(2) to HCl + Cl^(*) (5) CH_(3)^(*) + Cl_(2) to CH_(3)Cl + Cl^(*)