can someone please help me with these chemistry problems. Thanks.

Chemistry
Tutor: None Selected Time limit: 1 Day

Use the ideal gas law to solve the following problems. Must show work to get credit.

1. If I 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?

2. If I have an unknown quantity of gas at a pressure of 1.2 atm a volume of 31 liters and temperature of 87 degree C how many moles of gas do I have?

3. If I contain 3 moles of gas in a container with a volume of 60 liters and at a temperature of 400K what is the pressure inside the container?

May 21st, 2015

question 1

DATA:

Pressure= 5.6atm

Volume= 12L

Number of moles(n)= 4mol

Temperature=?

SOLUTION:

PV=nRT

T=PV/nR

= (5.6) (12)/(4) (0.0821)

= 204.6285K

question 2

DATA:

Pressure= 1.2atm

Volume= 31L

Temperature= 87C0 + 273= 360K

n=?

SOLUTION:

PV=nRT

n= PV/RT

  = (1.2) (31)/(0.0821) (360)

= 1.2586 mol

question3

DATA:

n= 3mol

Volume= 60L

Temperature =400K

Pressure =?

SOLUTION:

PV=nRT

P= nRT/V

  = (3)(0.0821) (400)/60

= 1.642atm


May 21st, 2015

Thank you so much for your help.

May 21st, 2015

you're welcome :)

May 21st, 2015

Are you available to help me with some more I am willing to pay you if you have the time.

May 21st, 2015

yeah sure

May 21st, 2015

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