1. Human saliva has a pH of 6 while the contents of the stomach has a pH of 2. How much greater is the concentration of hydrogen ions in the stomach over that in saliva

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.