The block moves a distance l up the incline. the block does not stop after moving this distance but continues to move with constant speed. what is the total work wtot done on the block by all forces? (include only the work done after the block has started moving, not the work needed to start the block moving from rest.)

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

What kind of enegia produces the mixture of bicarbonate and vinegar  chemical producetion

The law of conservation of momentum will be the same no matter where you apply it.the equation will be  77.4 + m (mass of canister) *3.6