Elaborate on why water has a neutral ph. a) water will turn blue litmus paper red and red litmus paper blue. b) water has equal concentrations of hydrogen ions and hydroxide ions. c) water forms many heterogeonous solutions and homogeneous solutions. d) water contains a high concentration of hydrogen ions and hydronium ions.

Is this correct if not can u correct me

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.

Why is it that 85.48 rounded to two significant figures is 85 and not 86?