You test l-131 with a half-life of 8 days. You end up with 187.5 g and originally had 750 g. How old is the item?

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.

What is the correct lewis structure for chloroform chcl3

Stage in which a typical star has completely stopped fusion