The volume of a sample of hydrogen gas was decreased from 14.54 L to 7.83 at constant temperature. If the final pressure exerted by the hydrogen gas sample was 6.67 atm, what pressure did the hydrogen gas exert before its volume was decreased?

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

Which description best characterizes the motion of particles in a solid?

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.