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What is the only variable that the ideal gas law lets you solve for?
Wiki User
∙ 9y ago
The number of moles of the gas in question. The ideal gas law states that
P x V = n x R x T
where, P is pressure, V is volume, n is number of moles of the gas, R is the ideal gas constant and T is temperature in Kelvin.
The combined gas law states that PV/T = k.
As you can see, the variable "n" is not in the combined gas law.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agogas
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Rafaelrz.
Writing the combined gas law,
P1V1/T1 = P2V2/T2
Now, the mass of gas in state 1, m1, has to be the
same as in state 2, m2, and the gas in state 1 has
to be the same as in state 2.
So mass and gas have to be constant.
But if we pick moles to be the same in both states,
n1 = n2 , then it wont matter if gas 1 is different
from gas 2. Remember that the combined gas law
models Ideal Gas.
Wiki User
∙ 6y agoThe Gas Constant (R) is the constant in the equation for the Ideal Gas Law: PV = nRT
where P is pressure, V is volume, n is number of moles, and T is temperature.
The value of the gas constant 'R' depends on the units used for pressure, volume and temperature.
R = 0.0821 liter·atm/mol·K
R = 8.3145 J/mol·K
R = 8.2057 m3·atm/mol·K
R = 62.3637 L·Torr/mol·K or L·mmHg/mol·K
Wiki User
∙ 9y agoThe ideal gas law, like any other algebraic equation, allows you to solve for any one variable provided you have the others. R isn't a variable (it's called the ideal gas constant for a reason), so that means if you have any three of pressure, volume, number of moles, or temperature, you can solve for the missing one.
Wiki User
∙ 8y agoFor PV = nRT
P is pressure. Units are uaually atmospheres, pascals or kpascals, or torr (mm Hg)
V is volume. Units are liters
n is moles. Units are moles
R is the gas constant. Units can be L-atm/deg-mole, or L-torr/deg-mole, or L-kP/deg-mole
T is temperature in Kelvin. Units are degrees Kelvin
Wiki User
∙ 8y agoThe formula is:
pV = nRT,
where:
* p is the pressure in atmospheres
* V is the volume in litres
* n is the number of moles
* R is the universal gas constant (0,082057) in L.atm/K.mole
* T is the temperature in kelvins
Wiki User
∙ 12y ago(L)(atm)
_____
(moles)(Kelvin)
Wiki User
∙ 12y agoOnly the temperature must be constant.
Wiki User
∙ 12y agoTemperature
Wiki User
∙ 13y agotemperature
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