Hi,
The answer should be letter B, as H2O is a compound made of two different elements in a definite proportion.
Answer:
idk lol the answer is A i did it
Explanatiion: By finidng ways to use less elctricty we use less energy and less coal causing eocnomic gain
I'm not exactly sure what specifically you are asking for in relationship to balancing equations, but I have some examples with working out so you can examine them and try to go through the steps with them.
Hope this helps! <3
D. An encyclopedia. Encyclopedias are trusted and have reliable information. I feel like this shouldn't be posted in biology though