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A vessel contains 6xx 10^(26) molecules ...

A vessel contains `6xx 10^(26)` molecules `m ^(-3).` Mass of each molecule is `6xx10^(-27) kg.` Assume that, on an average, one-sixth of the molecules move with a velocity`10^(3)` m/s perpendicularly towards each wall. If the collisions with the walls are perfectly elastic, then which of the following is correct?

A

Change in momentum of each molecule is `12xx10^(-24)` kg m/s in each collision

B

The number of molecules hitting normally to1 `m ^(2)` of the wall per second is `10^(29)`

C

Total change in momentum of all molecules per second is`10^(31)` SI units

D

The number of molecules hitting one square metre of the surface is `6xx 10^(29)`

Text Solution

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The correct Answer is:
A, B
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