What is a compound, element and atom

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

The rules of engagement (roe) working group is often used to (select all that apply.)

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?