Question

How many atoms of oxygen are represented in 2Al2(CO3)3?
6
9
3
18

Answer 1

\(2AL_2(CO_3)_3\)

Answer 2

Just look at the number of each element present.

Answer 3

So it appears that without the two coefficients, you have 2 Al, 3 C, and 6 O

Answer 4

18?

Answer 5

But with the coefficient of two, you would take that amount and multiply by 2

Answer 6

or wait!

Answer 7

haha, how many molecules of oxygen. Whoops

Answer 8

9+4=12 and thats not an option

Answer 9

@rebeccaxhawaii is this a compound?

Answer 10

yes

Answer 11

Well...if Oxygen occurs diatomically, then i suppose 6 would make sense

Answer 12

6 would make the most sense here.

Answer 13

oh wait. I see. It has three carbonate ions that each have three oxygen atoms, so that makes a total of 9 oxygen atoms per aluminum carbonate. You have two aluminum carbonate compounds, so you have a grand total of 18 oxygen atoms

Answer 14

That makes sense

Answer 15

The answer should be D

Answer 16

alright so i was right?

Answer 17

ye

Answer 18

thank you

Answer 19

If this is a compound, then the 2 coefficient applies to the oxygen. there is 9 present without the coefficient.

So 9 x 2 = 18

Answer 20

np. My apologies for the initial confusion, probably should have read more carefully