MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 11
        

A glass tube of volume 112ml,containing a gas is partially evacuated till the pressure in it drops to 3.8*10-5 torr at 00C.the number of molecules of the gas remaining in the tube is?

10 years ago

Answers : (2)

Ramesh V
70 Points
							

volume = 0.112 L

pressure = 3.75 atm

temp = 273K

gas law is PV=nRT

n=3.75*0.112/(0.0821*273)

n=0.01874 moles

A mole has 6.0221415×1023 atoms or molecules of the pure substance being measured

no. of molecules = 112.87x1020

--

regards

Ramesh

10 years ago
Badiuddin askIITians.ismu Expert
147 Points
							

HI sameer ali

 

V=112 ml

P = 3.8*10-5 torr

T=00C=273 k

Use the formula PV=nRT

here n number of mole

and R is gas constant

and find the value of n

and we know that 1 mole of gas contain 1 avagadro number(A) of molecules

so n mole of contain n*A number of molecule at 00C

Take care of units during calculation


Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly.
 We are all IITians and here to help you in your IIT JEE preparation.

 All the best sameer ali
 
Regards,
Askiitians Experts
Badiuddin


 

10 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 141 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details