can some one please help me please

Chemistry
Tutor: None Selected Time limit: 1 Day

What is the volume of a 5 g sample of carbon dioxide gas at a temperature of 88.2 oC and a pressure of 786.1 mmHg?

What is the pressure exerted by 6.26 g of argon with a volume of 2177.5 mL at a temperature of 12oC? 

Feb 7th, 2015

Question 1)

Please note that, the number of mol of CO2 is:

5/ 44= 0.114 mol, since the atomic mass of CO2 is 44 a.m.u. (atomic mass units)

Furthermore the pressure is P = 786.1/760 = 1.034 atm.

Then I apply the equation of gases:

P*V = n*R*T

where P is the pressure, V is the volume, Tis the temperature in Kelvin (273+88.2=361.2 °K), n is the number of moles of our sample of CO2; so I can write:

V = (n*R*T)/P = (0.114 * 0.08206*361.2) / 1.034 = 3.27 liters.


Question 2)

Here, the numbers of mol of Ar, is:

6.26/40 =0.1565.

Then I apply the equation of gases, and I get:

P = (n*R*T)/V = (0.1565*0.08206*285) / 2.1775 = 1.68 atm,

since T = 273+12 = 285 °K, and V = 2177.5 / 1000 = 2.1775 liters

Feb 7th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Feb 7th, 2015
...
Feb 7th, 2015
Mar 27th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer