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`        the weight ratio of o2 and n2is 1:4 are mixed find ratio of no.of molecules`
6 years ago

510 Points
```										number of molecules is directly proportional to moles
N = kn(moles)
let weight of O2 of M then weigth of N2 is 4M ..
moles of O2 = M/32                              (molar mass of O2 is 32)
moles of N2 = 4M/28                             (molar mass of N2 is 28)

N02 = k(M/32)             ..............1
Nn2 = k(4M/28)            .............2

dividing both the equations
No2/Nn2 = 7/32

approve my ans if u like it
```
6 years ago
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