1.) What does a coefficient represent in a chemical formula? 2.) How do you use the coefficient to calculate the number of atoms in each molecule
3.) How many total atoms are in this compound 3C H O
6 12 6
im offering alot of points, please help me

List four observations that indicate that a chemical reaction may be taking place

What produces wave a)sound b) heats c)transfer of energy d)vibrations

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.