1.

A sample of `C_(x)O_(y)` having `3xx10^(19)` molecules is weighing `3.4 mg`. Then the value of x and y is respectively …………… `(Take N_(A) = 6xx10^(23))`A. `1,2`B. `3,2`C. `2,2`D. `5,2`

Answer» Correct Answer - B
A sample of `C_(x)O_(y)` having `3xx10^(18)` …………..
Mass of `N_(A)` molecules (Molar mass)
`= (3.4xx10^(-3))/(3xx10^(19))xx6xx10^(23)`
`= 68 g//mol`
This is satisfied only for `x = 3 and y = 2` .


Discussion

No Comment Found

Related InterviewSolutions