Answer:
B) Photosynthesis is the process in which light energy is transformed into food energy.
Answer:
Explanation:
The given reaction is exothermic . So ΔH is negative .
Gas is evolving so work done by gas is positive or w is positive.
Change in internal energy that is ΔU is negative.
q = u - w
u is negative , w is positive so q is negative .
Answer:
chemical and electrical ( and sometimes nucelar)
Explanation:
Because elemental mercury is a liquid at a room temperature
