Cesium-137 is a radioactive byproduct of the fission process. Much Cesium-137 was deposited in the Bikini Atoll (in the Southwestern Pacific Ocean) during atomic bomb tests of the 1940s. How many years will it take 128-grams of Cesium-137 to decay to only 4-grams of Cesium-137 if its half-life is 30 years?

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.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass