## anonymous one year ago (I know this is totally irrelevant but hardly anyone is on Chemistry) Write a chemical equation for the combustion of each of the following substances. If a compound contains carbon and hydrogen, assume that carbon dioxide gas and liquid water are produced. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.) (a) solid barium

1. ParthKohli

Well, what do you think?

2. anonymous

I honestly have no clue as to what I should do

3. ParthKohli

$\rm Ba ~(s) + O_2~(g) \longrightarrow \cdots$

4. anonymous

Ba_{2}O(s)?

5. anonymous

$Ba _{2}$

6. ParthKohli

In elemental states, you're looking at reactions like these:$\rm C~(s) + O_2~(g) \longrightarrow CO_2~(g)$$\rm Na + O_2 \longrightarrow Na_2 O$$\rm N + O_2 \longrightarrow NO_2$

7. ParthKohli

Why $$\rm Ba_2 O$$? Why not $$\rm Ba_2 O_3$$ or $$\rm BaO_2$$ or $$\rm BaO$$?

8. anonymous

Oh yeah then BaO right?

9. anonymous

Since Ba has a +2 charge and O has a -2 charge

10. anonymous

right?

11. anonymous

Hello?

12. ParthKohli

Yes, right!

13. anonymous

Yay!

14. anonymous

So for my other questions do I just add $O _{2}$

15. anonymous

because that was the main place as to where I was confused

16. ParthKohli

That's what combustion is, right?

17. anonymous

I think my teacher didn't cover this too thoroughly and he moves from subect to subject pretty quickly as well

18. anonymous

Anyways thank you so much!!!!

19. ParthKohli

No problem :)