00:01
Okay, so in this problem, we have a 20 -liter carbon dioxide gas that has a pressure of 9 .5 times 10 ways to 5 pascal and temperature of 19 degrees celsius.
00:25
Now, question a wants us to convert this temperature to kelvin.
00:31
So this is the formula for conversion.
00:37
The temperature in celsius, you just had to add to 773 .15 to convert to kelvin.
00:52
Then solving, we have 19 .0 degrees celsius plus this.
01:05
And then this is equals to 292 .15 kelvin.
01:16
Now, for question b, what is the number of moves? we can determine that using the ideal gas.
01:26
No, the ideal gas equation, which is this.
01:33
Isolating the number of moles to the left -syl equation since this is what we mean, then we have this.
01:44
And solving, we have 9 .5 times 10 ways to 5 pascal's multiplied by 20 liters, and converting liters to meter cube.
02:01
So one meter cube is equals to top.
02:04
And the r is the gas constant which is 8 .31 jous per more kelvin multiplied by the temperature in kelvin.
02:20
So we can find that the number of moles is 7 .83.
02:34
Now, question c, one asked to determine the molecular weight of the carbon dioxide.
02:41
So this is equal to the atomic weight of carbon into atomic weight of oxygen...