Bismuth-212 has a half-life of 60.5 minutes. If you start with 128 grams of Bi-212, how much unchanged Bismuth-212 will be left after 7 half-lives?
(include units with your answer *

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

What is i fracture in the crust called when land move up, down or sideways

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.