Things only girls would understand

You may expect bonds between two atoms which each have n covalent lonic metallic hydrogen

What is the overall order of reaction for rate = k[no]2[o2]

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?