Question

yes. still doing this problem. 10 gallons of diesel fuel C16H34
density 0.7g/ml
C16H34+O2 -> CO2+H2O

How many CO2 kg is produced?

I just need help on finding how many CO2 is produced..

Answer 1

Im at the point where I found the Molar Mass, Ratio, Balanced the equation, I just am confused on how to exactly set up the rest from there.

Answer 2

Can you provide me with the molecular mass, and the balanced equation and moles of C16H34 in 10 gallons ?

Answer 3

I converted the 10 gal to ml which is : 37854.1 ml or 3.78 x 10^4

Then I have the molar mass of C16H34 which is : 226.446 g

I balanced the equation to : 2 C16 H34 + 49 O2-----> 32 CO2 + 34 H20

The Molar ratio is: 2 to 29 to 32 to 34

Now what!!! :)

Answer 4

Memorize this formula
\[Moles = \frac{grams}{Molecular Mass}\]
NOTE molar mass has units g/mol

37854.1 mL * 0.7g/mL = 26500g
notice that mL cancels out and you are left with grams

now convert to moles using the formula I provided you with that you should memorize

26500g/226.446 g/mol =

then divide by 2 and multiply by 32 to convert to moles of CO2

Answer 5

then just use the formula again to convert to grams of CO2, then divide by 1000 to convert grams of CO2 to kg of CO2

Answer 6

okay so I got 1872.41 after dividing by 2 and multiplying by 32
now ill convert to grams of CO2...

Answer 7

because the 1872.41 is moles..

Answer 8

yes notice that grams cancel out and you are left with moles as a unit

Answer 9

so i got 0.008268 kg CO2

Answer 10

44.0095g/mol is the molecular mass of CO2

so use the formula

1872.41mol = x/44.0095g/mol

basic algebra you want to isolate x so multiple both sides by 44.0095g/mol

x = 1872.41mol*44.0095g/mol

notice that moles cancel out (look at units like numbers when you divide them they just become 1 so they disapeer)

x = 82404g/1000 = 8.2kg

Answer 11

oh okay I just Put the molar mass of the other one instead of CO2 …got it now.

Answer 12

well I hope you understand how I got the answer, this stuff is pretty fundamental. If you have anyother questions about how I came to the solution ask.

Answer 13

just make sure units cancel and you shouldn't have any problems

Answer 14

Yeah I totally understand canceling items but Its hard to figure what to do next sometimes.. But ill work it through once more from the beginning so thank you

Answer 15

yeah its not a problem it is really systematic once you do it a couple times you wont have a problem with it