Ideal gas law depicts the action of an ideal gas. Ideal gas equation is the result of pressure multiplied by the volume which is directly proportional to the outcome of temperature and the amount of gas. By using Ideal gas equation, ideal gas law calculator estimates the temperature, the amount as well as the volume, pressure of the gas.

Plug in the values into the Ideal gas law calculator and it will calculate the unknown variable.

Plug in the values into the Ideal gas law calculator and it will calculate the unknown variable.

**Step 1**: Note down all the given values of the problem.

**Step 2 :**Plug in the given values into the ideal gas equation given below and calculate the unknown.

**Ideal gas equation**is given by,

$PV = nRT$

where,

P = gas pressure,

V = gas volume,

n = number of moles,

R = ideal gas constant = 8.314 $J.K^{-1}$ or 0.08206 $L.atm.mol^{-1}.K^{-1}$

T = gas temperature.

Below are some of the problems based on Ideal gas law.### Solved Examples

**Question 1:**A cylinder filled with helium with pressure 10130.0 kPa and 50 L is at $30^{\circ}$C. Find the number of moles of helium in the cylinder?

**Solution:**

Step 1 :Given P = 10130.0 kPa

V = 50 L

n = ? mol

R = 8.314 $J K^-1 mol^-1$

T = $30^{\circ}$C = 30 + 273 = 303 K

Step 2 : By using the formula,

PV = nRT

10130.0 x 50 = n x 8.314 x 303

506500 = n x 2519.142

n = 506500 รท 2519.142 = 201.1 mol

**Question 2:**Calculate the temperature with 0.654 moles of neon gas that occupy 12.30 liters at 1.95 atmospheres?

**Solution:**

Step 1 : Given P = 1.95 atm

V = 12.30 L

n = 0.654 mol

R = 0.08206 $L atm mol^{-1} k^{-1}$

T = ?

Step 2 : By using the formula,

PV = nRT

T = $\frac{PV}{nR}$

= $\frac{(1.95 atm)(12.30 L)}{ (0.654 mol) (0.08206 L atm mol{-1} K^{-1}) }$

= 447 K