Answer:
0.585 mol
25.7 g
Explanation:
There is some info missing. I think this is the complete question.
<em>Carbon dioxide gas is collected at 27.0 °C in an evacuated flask with a measured volume of 30.0L. When all the gas has been collected, the pressure in the flask is measured to be 0.480atm.
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<em>
Calculate the mass and number of moles of carbon dioxide gas that were collected. Be sure your answer has the correct number of significant digits.</em>
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Step 1: Given data
T = 27.0°C + 273.15 = 300.2 K
V = 30.0 L
P = 0.480 atm
n = ?
m = ?
Step 2: Calculate moles of CO₂
We can calculate the moles of CO₂ using the ideal gas equation.
Step 3: Calculate mass of CO₂
We know that the molar mass is 44.01 g/mol. Then,
Answer:
Explanation:
Use the ideal gas equation:
Where:
- p is the pressure: 202.6kPa
- n is the number of moles: 0.050 mol
- T is the temperatue in absolute scale: 400K
- R is the universal constant for ideal gases: 8.314 L-kPa / K-mol
- V is the volume
Substitute and solve for V:
Convert to liters:
The answer is rounded to two significant figures.