Ahydrocarbon contains by mass 82.7% carbon and 17.3% hydrogen. whats the molecular formula ?

Using the periodic table, complete the table to describe each atom. type in your answers

What forms when chemical reactions combine pollution with sunlight?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.