Question

Help with chemistry??? WILL FAN AND MEDAL ?

Answer 1

Okay, well I'm so confused with stoichiometry, could you please explain how in the problem they got the numbers 22.4 L O2 and the 2 mol C and 1 mol O2 as well as the 12.01, where did they get these numbers from? I'm confused.
How many grams of Carbon are needed to react completely with 32.8 liters of O2 gas at STP?
C(s)+O2(g)-->2CO(g)
32.8 LO2 x (1 mol O2)/(22.4 L O2) x (2 mol C)/(1 mol O2) x (12.01 g C)/ (1 mol C)=35.2 g C

Answer 2

At STP volume of 1 mole of O2 = 22.4L
using this they have found out 32.8L is how many moles... okay?

Answer 3

So it is :
32.8 LO2 x (1 mol O2)/(22.4 L O2) =1.46 moles of O2 .
Now, we know that 1 mole of O2 weighs 32g then how much will 1.46 moles weigh?

Answer 4

NOTE: the equation you have written isn't balanced properly... pls. write the correct version

Answer 5

@Jen543 ?

Answer 6

carbon combines with oxygen to form carbon monoxide

2C + O2 --. 2CO

this is a balanced equation because
there are 2 atoms of carbon and 2 atoms of oxygen on left side

and there are the same numebr of C's and O's on the right side.

Answer 7

if we check the periodic table we see that one mole of carbon weighs 12 grams and we also know that one mole of the gas oxygen occupies 22.4 liters at Standard Temp and pressure. (this is the volume of 1 mole of every gas).

Answer 8

understood so far?

Answer 9

So sorry for the late reply, yes thank you I appreciate it so much

Answer 10

Is this how you do every stoichiometry problem?

Answer 11

I'm still extremely confused with chem

Answer 12

you need to get the correct balanced equation first.

2C + O2 = 2CO

2 moles of carbon react with 22.4 litres of oxygen

now 1 mole of carbon = 12 grams

so 2*12 = 24 grams C reacts with 22.4 litres oxygen

OK/

Answer 13

Thank you!

Answer 14

Ok so you need to find how much carbon will react with 32.8 liters of oxygen

as we have seen already
24 g carbon react with 22.4 liters O2

trun this around:-

22.4 liters O2 react with 24 g Carbon
by proportion

32.8 liters react with 32.8 * 24
--------- grams of carbon
22.4

Answer 15

do that calculation and you'll get the answer