What is the role of the green substance chlorophyll in photosynthesis? (2 points) Chlorophyll collects water from the ground.
Chlorophyll captures energy from the sun.
Chlorophyll captures carbon dioxide from the air.
Chlorophyll moves water up the stem to the leaves.

Tell me the iupac name of the following compounds:

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2