25.00 mL of a 0.150 M solution of nitric acid is mixed with 75.00 mL of a 0.225 M solution of perchloric acid.
(A)Calculate the concentrations of all solute species present in the
mixture. (0.206 M, 0.0375 M, 0.169 M)
(B)Calculate the pH of the mixture. (0.686)

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)