Answer to Question #112237 in Physical Chemistry for kathiresvaran

Question

A flask contain 1.00 mol of He(g) at 273K and 1 atm. How many molecules in the sample have speeds in the range of 90.000 to 90.002 m/s ?

Answer 1

Using ideal gas law equation,

PV=nRT

V=224ml=0.224L, P=1atm, R=0.082 and T=273K

1atm×0.224L=n×0.082Latm mol

−1

K

−1

×273K

n=0.01 mol

0.01 mol of gas contains 1g.

1mol of gas =100g

Therefore, 6.022×10

23

×3 atoms=100 g

Mass of one atom =5.53×10

−23

g

Read more on Brainly.in - https://brainly.in/question/16911550#readmore