Please help asap. will give brainliest to correct answer Uranium-232 has a half-life of 68.8 years. After 344.0 years, how much uranium-232 will remain from a 200.0-g sample? You must show all work to receive credit.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

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.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.