Posted by **maysam** on Friday, December 1, 2006 at 12:42am.

An ideal gas at 18.0 °C and a pressure of 2.83 x 105 Pa occupies a volume of 2.63 m3. (a) How many moles of gas are present? (b) If the volume is raised to 5.09 m3 and the temperature raised to 31.6 °C, what will be the pressure of the gas?

If N is the number of molecules then:

PV = NkT ---->

N = PV/(k T)

P = of 2.83 x 10^5 Pa

T = 291.15 K

V = 2.63 m^3

k = 1.38065*10^(-23)J K^(-1)

Calculate N and divide by 1 mole.

1 mole times the mass of one atomic mass unit is 1 gram.

1 atomic mass unit is 1.66054*10^(-27) kg ---->

1 mole is 6.02214*10^(23)

Remember: a mole is just a number just like a billion is a number!

## Answer This Question

## Related Questions

- physics - An ideal gas at 18.5°C and a pressure of 1.54 105 Pa occupies a volume...
- Physics - An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume ...
- Engineering Physics - An ideal gas at 12.1 °C and a pressure of 2.38 x 105 Pa ...
- Physics - An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume ...
- physics - An ideal gas at 18.5°C and a pressure of 1.54 105 Pa occupies a volume...
- Physics - An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume ...
- physics - An ideal gas at 19.8 °C and a pressure of 2.79 x 105 Pa occupies a ...
- chem - Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters...
- Chemistry - nitrogen gas is at 2.00. c, 2.00 atm pressure and occupies a volume ...
- Intro to Physics - (a) An ideal gas occupies a volume of 3.0 cm3 at 20°C and ...

More Related Questions