Given: H2O(l) → H2O(s) ΔH° = –6.02 kJ at 273K Calculate the entropy change of the surroundings (ΔSsurr) when one mole of water freezes at 0°C and a pressure of one atmosphere.

a. 22.1 J/K
b. 0.022 J/K
c. –397 J/K
d. –22.1 J/K
e. 397 J/K

How does decreasing the gas volume affect the pressure of a gas?

Draw the lewis dot structure for each of the following polyatomic ions

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?