What is the boiling point of water and its melting point

Which type of reaction always has an element and a compound as reactants

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?

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal