level: Calculations with Gases
Questions and Answers List
level questions: Calculations with Gases
| Question | Answer |
|---|---|
| What is the Molar Volume? | -This is the amount of Volume that is Occupied by 1 Mole of a Gas |
| What is the Formula for Molar Volume? | Molar Volume [dm₃/mol] = Gas Volume [dm₃] / Number of Moles |
| What is the Molar Volume of 1440 cm₃ of Nitrogen Gas, that has a mass of 1.80 Grams? | -First, find out the Number of Moles: -Moles = Mass/Mr --> Mass=1.80 / 28 = 0.0642 -Second, Substitute, Correct and Solve: -MV = GV / N of Mol --> MV = 1.440dm₃ / 0.0642 = 22.4dm₃/mol |
| What is the main rule with Molar Volumes? | -That they always occupy 24dm₃ at Room Temperature and Pressure, that's it -Room Temperature is 20∘C, Room Pressure is 1 Atmosphere |
| Give the Formula for Molar Volume, this time in Room Temperature -Why is tit like that? | Volume = Moles [dm₃] x 24 -The 24 is the Molar Volume, because at Room Temperature, it is the Same. |
| How many moles in 8280 cm₃ of Hydrogen Gas at RTP [Room Temperature and Pressure] | -First, Use the Formula, with the Molar Volume Rule [and Convert the Units] 8280cm₃ = 8.28dm₃ and -N of Moles = VG / 24 ---> N of Moles = 8.28 / 24 = 0.345 |