Chelsea fills four bottles with water. She then places the four bottles of water in the sun. Each bottle contains one-half liter of water. After a few hours, Chelsea measures the water temperature in each bottle. Based on what Chelsea learned from measuring the temperature in each water bottle, why do you think most solar panels are dark in color?

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.