Question

How many atoms of oxygen are represented in 2Fe(NO3)2?

3
6
12
18

Answer 1

@Abhisar how do i solve this?

Answer 2

@FriedRice

Answer 3

What do u think ?

Answer 4

How many atoms do u think are in \(\huge\ O_2\) ?

Answer 5

ok you have a balanced substance 2Fe(NO3)2?
as you can see that there are 2 atoms of Nitrate
so when you add them you'll get 2 nitrogen atoms and 6 oxygen atoms
but i am a little fuzzy on the 2Fe

Answer 6

@Abhisar 1?

Answer 7

Nopes !

Answer 8

ugh

Answer 9

It represents one Oxygen molecule which is composed of two oxygen atoms.

Answer 10

getting it ?

Answer 11

so the oxygen atom has to be multiplied by 2 so 6*2 = 12 oxygen atoms

Answer 12

oh yeah i made a mistake i was thinking of only one oxygen atom! and thank you @FriedRice

Answer 13

Similarly \(\huge\ 2O_2\) will represent 4 O atoms.

Answer 14

yep

Answer 15

where did you get 6*2?

Answer 16

i know why you mult. by 2 but where did 6 come from

Answer 17

well you know that there are 2 nitrate atoms

Answer 18

(NO3)2

Answer 19

so then you can say that there is 2 nitrogen atoms and 6 oxygen atoms

Answer 20

Ah i see. Thanks! and thanks @Abhisar too!