WILL GIVE BRAINLIEST 19. What is the [H3O+] for a solution whose pH is 4.88?
20. What is the pH of a solution whose [OH–] is 4.5 x 10-11 M?
21. What is the [H3O+] when the [OH–] is 4.1 x 10-11 M?
22. What is the [H3O+] for a solution whose pH is 3.2?
23. What is the pH of a solution whose [H3O+] is 9.9 x 10-8 M?
24. What is the [H3O+] for a solution whose pH is 5.4?
25. What is the [OH–] for a solution whose pH is 6.5?

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a. the mitochondria b. the nucleus c. the vacuoles d. the endoplasmic reticulum