Question

Nitrogen gas is present in 1 litre flask at a temperature of 7.6×10^8 millimetre of HG at 0 degree Celsius. Calculate the number of nitrogen molecules in the flask .​

Answer 1

Answer:

2.68×1010

Explanation:

Using ideal gas equation,

n=RTPV....(i)

P=7607.6×10−10=10−12atm

V=1 L,T=273 K,R=0.0821 L atm K−1mol−1

From eq. (i) n=0.0821×27310−12×1

Number of molecules =n×6.023×1023

=0.0821×27310−12×6.023×1023

=2.68×1010