Can you help me with this please -
Temp - 650
Pressure - 690mm Hg
mass - 0.927g
volume - 194cm3
How do I calculate the volume of the gas at a different temp? & at a different pressure?
You can do this two ways.
The simplest is P1V2/T1 = P2V2/T2
To calculate the volume of a gas at a different temperature and pressure, you can use the combined gas law equation: P1V1/T1 = P2V2/T2.
Let's break down the equation:
- P1 and P2 represent the initial and final pressures respectively.
- V1 and V2 represent the initial and final volumes respectively.
- T1 and T2 represent the initial and final temperatures respectively.
To calculate the volume of gas at a different temperature and pressure, follow these steps:
1. Identify the given values:
- P1 (initial pressure) = 690 mm Hg
- V1 (initial volume) = 194 cm3
- T1 (initial temperature) = 650 K
- P2 (final pressure) is the pressure you want to calculate the volume for.
- T2 (final temperature) is the temperature you want to calculate the volume for.
2. Rearrange the equation:
Cross-multiply P1V1 and T2, and P2V2 and T1:
P1V1 * T2 = P2V2 * T1
3. Substitute the known values into the equation:
P1 = 690 mm Hg
V1 = 194 cm3
T1 = 650 K
P2 and T2 are the unknown values you want to find.
4. Solve the equation for P2V2:
P2V2 = (P1V1 * T2) / T1
5. Once you have the value for P2V2, divide both sides by P2 to find V2:
V2 = (P1V1 * T2) / (T1 * P2)
Plug in the values for P1, V1, T1, T2, and P2, and calculate the value for V2 using a calculator or a spreadsheet. This will give you the volume of the gas at the different temperature and pressure.