An acid is a substance that increases the concentration of h3o+ ions in solution. look at the reaction below of phenol (c6h5oh) with water: which reactant acts as an acid by contributing a h+ ion to create h3o+ in the chemical equation?
a. c6h5oh(aq)
b. h2o(l)
c. c6h5o–(aq)
d. h3o+(aq)

What is the enthalpy of combustion (per mole) of c4h10 (g)? –2,657.5 kj/mol –5315.0 kj/mol –509.7 kj/mol –254.8 kj/mol

Gravitational potential energy is related to

How does the digestive system interact with the circulatory system? a. messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system. b. nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system. c. nutrients and gases are absorbed by organs in the circulatory system. then, they are transported to all parts of the body by organs in the digestive system. d. oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.