Ideal gas law
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How do you find the molecular weight of an unknown gas?
How would you find the molecular weight of an unknown gas? I would determine the mass of a fixed volume of the gas at a known temperature and pressure and then use the Ideal Gas Law to calculate the molar mass. The mass of an evacuated 255 mL flask is 143.187 g.
Can you calculate molar mass of a gas?
You can calculate anything, in any order. How to calculate molar mass of a gas? This molar mass of gas calculator is a tool that uses the ideal gas law formula to work out an unknown gas’ molar mass, and the number of moles of it present.
How to solve for moles of unknown gas?
The temperature in the laboratory is 23 o C and the air pressure is 0.987 atm. Calculate the molar mass of the gas and deduce its formula. Assume the gas is ideal. Step 1: List the known quantities and plan the problem. First the ideal gas law will be used to solve for the moles of unknown gas ( n).
How do you calculate moles in ideal gas law?
The modified ideal gas law formula: Moles = (Pressure * Volume) / (0.0821 * Temperature) If you want to work it out yourself, without the molar mass of gas calculator, be careful with the units! This particular equation uses a constant of 0.0821, which is intended for the following units: