What isotope is used for a standard for other atomic masses?

Which of the following statements about acidic water is true? a. acid has no effect on the h, o molecules. b. the solution contains a larger number of oh ions than h, o ions. c. the solution contains a larger number of h, o ions than qh ions. d. the solution contains an equal number of h, o ions and oh ions. none of the above e.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat