What is the mass of a sample of CO2 if it is held at 24 degrees C, 0.544 atm in a 3.00L flask?

1 Answer
Nov 14, 2015

Answer:

2.94g

Explanation:

Use the ideal gas law (#PV=nRT#).

Since the question asks for mass, if we find the number of moles of #CO_2#, we can multiply that by the molar mass to find the mass of the #CO_2# gas.

If we want to solve for moles, #n=(PV)/(RT)#.

Plug in values: #n=(0.544*3.00)/(0.08206*(24+273.15))#

Remember, the temperature must be in Kelvin, not Celsius.

#n=0.67#

#0.67mol##CO_2##xx(44g)/(1mol)=color(blue)(2.94g)#