What characteristic do photosynthesis and combustion share? a. they both start with chemical energy. b. they both are endothermic. c. they both occur in living organisms. d. they both involve chemical change.

Explain the effects of nh3 and hcl on the cuso4 solution in terms of le chatelier's principle

Embryos of different species look very similar, which shows that the organisms share a ancestor.

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)