Which statement best describes this graph?
1. This is an exothermic reaction with a positive Hrxn.
2. This is an exothermic reaction with a negative Hrxn.
3. This is an endothermic reaction with a positive Hrxn.
4. This is an endothermic reaction with a negative Hrxn.

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

The ph of carrots are 5.0 how it is classified a. acidic b. basic c. indicator d. neutral

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.