Question

The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2.

How many moles of CO2 are produced when 35.0 mol C2H2 react completely? How do you get 35.0 mol out of C2H2?

Answer 1

@ganeshie8

Answer 2

he might be able to help you b cuz i have no idea:(sry

Answer 3

first lets make the equation of reaction

Answer 4

C2H2 + O2 ---> CO2 + H2O I believe

Answer 5

2C2H2 + 5O2 -->4CO2 + 2H2O

Answer 6

There is the equation

Answer 7

is that balanced

Answer 8

I would think thats what it shows in the question

Answer 9

you can check that it is balanced by adding up the Carbons on the left side, equals to carbons on the right side, etc

Answer 10

I'm very new to this

Answer 11

ok so now lets answer the question

Answer 12

ok

Answer 13

2C2H2 + 5O2 -->4CO2 + 2H2O

The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2. How many moles of CO2 are produced when 35.0 mol C2H2 react completely? How do you get 35.0 mol out of C2H2?

35 mol C2H2 * 26.04 grams / mol C2H2 , that will give you the grams of C2H2

Answer 14

I am using this calculator
http://www.lenntech.com/calculators/molecular/molecular-weight-calculator.htm

plug in C2H2

Answer 15

ok, and here is the problem for you http://prntscr.com/5f8a6o

Answer 16

also you have

84 mol O2 * 32 g / mol O2 = 2688 grams O2

Answer 17

and we have
35 mol C2H2 * 26.04 grams / mol C2H2 = 911.4 grams C2H2

Answer 18

now we need to use stoichiometry, which means we can think of the balanced chemical equation as a mole equation

2 moles of C2H2 + 5 moles of O2 -->4 moles of CO2 + 2 moles H2O

Answer 19

this says for every 2 moles of C2H2 there is 4 moles of CO2

Answer 20

and for every 5 moles of O2 is 2 Moles of H20?

Answer 21

yes that too

Answer 22

ok and do you see how we got
911.4 grams C2H2
2688 grams of O2

Answer 23

How do we setup the equation to get our mols of CO2

Answer 24

The acetylene tank contains 35.0 mol C2H2, and the oxygen tank contains 84.0 mol O2. How many moles of CO2 are produced when 35.0 mol C2H2 react completely? How do you get 35.0 mol out of C2H2?

35 moles of C2H2 * 4 mol CO2 / 2 mol C2H2 =

Answer 25

so i multiplied 35 moles by the ratio 4moles CO2 for every 2 moles C2H2

Answer 26

notice that the C2H2 cancels

Answer 27

All units should cancel right? Leaving you with CO2

Answer 28

70.0 mol of CO2

Answer 29

correct