HELP ME IM EVEN MORE DESPERATE THAN BEFOR ILL GIVE BRAINLIEST What is the pH scale? Which of these has the greatest concentration of hydronium (H3O+) ions? Which has the lowest concentration of hydronium (H3O+) ions? Which has equal concentrations of hydronium (H3O+) and hydroxide (OH-) ions?

Bleach pH = 11-13
Orange juice pH =3.3-4.2
water pH=7

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.