Question

Carbon dioxide gas is collected at in an evacuated flask with a measured volume of . When all the gas has been collected, the pressure in the flask is measured to be . 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.

Answer 1

Answer:

0.585 mol

25.7 g

Explanation:

There is some info missing. I think this is the complete question.

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.

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.

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.

$P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{0.480 atm \times 30.0L }{(0.08206atm.L/mol.K) \times 300.2K} =0.585mol$

Step 3: Calculate mass of CO₂

We know that the molar mass is 44.01 g/mol. Then,

$0.585mol.\frac{44.01g}{mol} =25.7g$