1 Oxygen atoms combine with hydrogen atoms and become water. Is this combination a result of the physical or
chemical properties of hydrogen? Explain and support your answer.

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.