Which of the following changes has a decrease in entropy? (3 points) n2o4 (g) yields 2no2 (g) c6h6 (l) yields c6h6 (g) 2liclo3 (s) yields 3o2 (g) + 2licl (s) 3fe (s) + 2o2 (g) yields fe3o4 (g)

How many atomic mass units are equal to 1.672×10−24 g of protons?

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.

372 ml is the volume of aluminum, density is 2.70 g/ml what is the mass in grams