Question

SI SE ENCIENDEN 10 GRAMOS DE C2H2 CON 10 GRAMOS DE O2. CUANTOS GRAMOS DE C2 H2 O2 CO2 Y H2O ESTAN PRESENTES AL TERMINO DE LA REACCION?

Answer 1

you need to write a balanced equation for the reaction first.

Answer 2

I need to know how is the balanced equation

Answer 3

well you need to learn how to write it, it's telling you in the equation itself.

C2H2 + O2 -> CO2 + H2O

Answer 4

you need to balance it yourself though

Answer 5

you how you would solve this problem

Answer 6

I need to know the result of the equation and procedure

Answer 7

i know how to solve it, and ill help you so you can do it yourself, but i can't give you the answer.

balance the equation first

Answer 8

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

Answer 9

awesome. now, in chemical equations you always work in moles, so you need to convert the masses you have to moles.

moles = mass/molar mass

Answer 10

BUT IF YOU ASK ME IN GRAMS. FORMULA WHICH I USE NOW

Answer 11

you're gonna have to convert from grams to moles and find out how much reacted, then convert the final amounts back to grams

Answer 12

WHAT DO I DO ONCE THE BALANCED EQUATION

Answer 13

THAT WOULD what you would do

Answer 14

once you balanced the equation, you need to convert the masses to moles.

use this equation to do that:

moles = mass/molar mass

Answer 15

I HAVE TO KNOW THE WEIGHT OF EACH OF THE ELEMENTS TRUTH

Answer 16

yeah, you can get these from a periodic table. www.ptable.com

Answer 17

MASS THEN IS NOT THE SAME AS THE MOLAR MASS ^?

Answer 18

no, molar mass is the mass of one mole of that substance.

say the molar mass of O2 is the molar mass of oxygen times 2 (because there are two atoms)..

molar mass of O is 16 g/mol

molar mass of O2 = 32g/mol

Answer 19

TRUTH WELL JUST DO NOT UNDERSTAND VERE IN SCHOOL LIKE BUT BE PREPARED FOR THEM. Entonses MOLAR MASS AS SACO. IS EACH OF THE ELEMENTS OF THE EQUATION TO GETTING BALANCIADA + TRUTH

Answer 20

i'm not sure i understand what you mean. I'll write out the steps you need to do in order to find the answer.

1. write and balance equation

2. convert mass to molar mass (this includes finding the molar masses of each of the compounds)

3. determine which is the limiting reactant according to the stoichiometric ratios (the one you have least moles of)

4. use stoichiometric coefficients (the numbers infront of the compounds in the balanced equation)

for example: 2C2H2 + 5O2 ------ 4CO2 + 2H2O

\[\frac{ moles _{C _{2}H _{2}} }{ 2 }=\frac{ moles _{CO _{2}} }{ 4 }\]

from there you can find how much CO2 you produced

5. convert back to grams using the same formula:

moles= mass / molar mass

Answer 21

COULD GIVE ME AN EXAMPLE OF THIS PROBLEM LIKE TO BETTER UNDERSTAND guide me and

Answer 22

MUCH YOU REALLY APPRECIATE IT

Answer 23

i don't mind writing out an example, but i think you'll get a better understanding through this video: http://www.youtube.com/watch?v=O8Fr26um3sk

Answer 24

THE TRUTH YOU UNDERSTAND MORE LIKE AN EXAMPLE

Answer 25

the guy in the video provides an example at 3:30 if you wanna skip the first part

Answer 26

THE TRUTH COULD NOT TELL ME I understood RESPONSE STEP 2

Answer 27

calculating molar masses?

Answer 28

YES

Answer 29

THIS PROBLEM

Answer 30

okay, zoo lets say we wanna find the molar mass of NaCl

molar mass of Na = 22.98 g/mol
molar mass of Cl =35.45 g/mol

molar mass of NaCl = 22.98 + 35.45 =58.44 g/mol.

another example, molar mass of C4H10

molar mass of C = 12 g/mol
molar mass of H = 1 g/mol

molar mass of C4H10 = (12 g/mol x 4) + (1 g/mol x 10) = 58 g/mol

Answer 31

OK I WILL UNDERSTAND AND THANK YOU FOR YOU CLARIFY MY DOUBTS

Answer 32

good stuff, dude. no problem