Answer:
B. hydrogen
Explanation:
that's because hydrogen is an element.
Answer:
900
Explanation:
when you add/subtract you round to the least number of decimals points
Well, Flammability is: What happens when combustible liquids (liquids that can burn) ignite (catch on fire) and burn easily at normal working temperatures.
Hope I helped!
- Amber
there are 2 copper atoms on the left side of the arrow, but none on the other side. there are also 7 oxygen atoms on the left hand side, but only 5 on the right hand side of the arrow.