a student is given a sample of an unknown liquid to test. The student thinks that the liquid is water. Which of the following physical properties of the sample is most helpful to determine if the liquid is water?

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.