Question

Which equivalence factor should you use to convert from 106 grams of O2 to moles of O2?

(1 mol O2/16.00 grams O2)

(16.00 grams O2/1 mol O2)

(1 mol O2/32.00 grams O2)

(32.00 grams O2/1 mol O2)

Answer 1

it's good to write it as a fraction because we have to cancel out units \[\rm (\frac{ 106 g ~of ~O_2 }{ 1 }) \cdot \frac{??}{???}\]
we have to convert grams to mole
so would you write grams at the numerator or mole for 2nd fraction ?

Answer 2

1 mole = atomic mass

Answer 3

Um... mole

Answer 4

correct
so 1 mole = how many grams of O_2
remember O_2 means 2 oxygen

Answer 5

31.9988 grams.

Answer 6

ok so how would you write fraction ??

Answer 7

32.00 grams O2/1 mol O2, option D.
P.S. how do I write a fraction on openstudy?

Answer 8

you can use the equation tool \[\huge\rm \frac{ 106 ~g~of~O_2 }{ 1 } \cdot \frac{ 32 ~g ~of~O_2}{1 ~mole ~of~O_2}\]
is this correct ?

Answer 9

Yes.

Answer 10

okay simplify that fracation. would that give you the mole ?

Answer 11

reread my previous comments

Answer 12

whenever u solve conversation questions
whatever word is to the right of the `to` will be the numerator
convert kg `to `g (g would be at the numerator )
convert L `to` mL (mL would be the numerator )
or think about as an algebraic expression \[\frac{ x }{ 1 } \cdot \frac{x}{y} = \frac{x^2}{y}\] is different th\[\frac{ x }{ 1 } \cdot \frac{y}{x}\]
^^converting x `to` y

Answer 13

How do I simplify that fraction?

Answer 14

it's multiplication so multiply numerator by numerator and denominator
ignore of O_2

Answer 15

\[\frac{ 106 g }{ 1 } \cdot \frac{32g}{1 mole }\]
solve this would that give you the moles ??

Answer 16

\[\frac{ 3392 }{ 1 }\]??
I think it would give you the moles @Nnesha.

Answer 17

how would you multiply this
x times x = ??

Answer 18

don't forget the units those are important.

Answer 19

whenever u solve conversation questions
whatever word is to the right of the ` to` should be at the numerator
convert kg to g (g would be at the numerator )
convert L to mL (mL would be the numerator )

here are some example

Answer 20

how would you multiply this
x times x = ??

Answer 21

let me know when you are free
it will be great idea if you finish this one first and then move on
because the question u just posted is similar to this one .

Answer 22

I am ready now.

Answer 23

@Nnesha, I would like to understand this :)

Answer 24

okay i asked some questions.