24. The half-life of iodine-131 is 8.1 days. How long will three-fourths of a sample of iodine-131 take to decay?

3. if the dartboard below is used to model an atom, which subatomic particles would be located at z?

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 mass of 0.46 mil of mgcl2