Question

Calculate the mass of water produced when 3.21g of butane reacts with excess oxygen.

Answer 1

okay write the reaction down

Answer 2

2C4H10(g)+13O2(g)→10H2O(g)+8CO2(g)

Answer 3

is that it

Answer 4

ok so

Answer 5

3.21 grams = how many moles of butane

Answer 6

2 moles of butane will result in 10 moles of h20

Answer 7

so x number of moles of butane will result in 5*x number of moles of h20 then u calculate the masss of the h20

Answer 8

18.02 is h20 mass

Answer 9

right

Answer 10

yeah

Answer 11

so 18.02 is answer

Answer 12

what the 0,0

Answer 13

18.02 is 1 molar mass

Answer 14

okay let me explain how these things are done

Answer 15

basically the masses you see on the period table

Answer 16

are given to you per mole
a mole of an element = 6.022*10^(22?) # of atoms of that element or something like that

Answer 17

someone decdided to take like a billinmillion million molecules of some element and decided to weight them, and record the mass and put it on the period table

Answer 18

so that became a mole!

Answer 19

ok

Answer 20

oka now you have a mole of a compound

Answer 21

you can find the 1 molar mass of a compound..
but u only have 3.21 grams of that compound, how many moles is that?

Answer 22

what is the molar mass of butane

Answer 23

so 18.02 is answer

Answer 24

=O

Answer 25

i will beat u with a stick

Answer 26

can u tell me why u are so confused

Answer 27

wut .. the just stop!

Answer 28

just stop go back to basics.. why are u confused

Answer 29

stop fiddling around with random numbers and understand what is going on

Answer 30

can you tell me and give me the solution please as it is hard to communicate via eami

and that is the way i will understand

Answer 31

i told you already

Answer 32

3.21 grams = how many moles of butane?

2 moles of butane will result in 10 moles of h20

so x number of moles of butane will result in 5*x number of moles of h20 then u calculate the masss of the h20

Answer 33

ok

Answer 34

this is my very first time doing it alone so I am not that comfortable with these problems

Answer 35

then u need to do more of these problems

Answer 36

can you provide me a solution and anser so I can take notes without interputing

Answer 37

i will do more

Answer 38

i promise

Answer 39

you know I have an exam tomorrow

Answer 40

ohh sorry

Answer 41

u arent even doing some of the stesps i gave u

Answer 42

first tell me the molar mass of butane

Answer 43

yes 18.02 is mass of h20

Answer 44

butane mass is 58.122

Answer 45

ok

Answer 46

if 58.122 grams = 1 mol
3.21 grans = how many mols?

Answer 47

18.106

Answer 48

-.-

Answer 49

take a deep breath okay

Answer 50

just relax lets calmly think about this

Answer 51

i divided the mass of butane by 3.21

Answer 52

58.122 grams = 1 mol
3.21 grams = ___ mols

Answer 53

right now 1 molar mass of buta weights 58.122 grams

Answer 54

but we only have 3.21 grams, 3.21 grams is a lot smaller than 58.122 grams

Answer 55

how many times 3.21 smaller than 58.122

Answer 56

by 18 times

Answer 57

okay so

Answer 58

the number of moles will be 18 times smalller too right

Answer 59

i mean how many moles* would you have for 3.21 grams

Answer 60

1.87* 10^23

Answer 61

T_T you are killing me here

Answer 62

how many mols

Answer 63

1 mole = 6.02*10^23

Answer 64

so do we divide this by 3.21