A 15.5 L balloon contains helium gas at a pressure of 840 mmHg. What is the final pressure, in millimeters of mercury, if the final volume is 9.25 L? (Please show your work in order to receive credit).

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

While eating cake crystal watched kisha place her hand in the frosting and rub it in her hair afterwards crystal did the same with her piece of cake crystal displayed

Which of the following is not a defining characteristic of plants?