Raul and bonnie are trying to classify several objects that they found during a field trip to the beach. they collected a sample of seawater, a piece of driftwood, and several smooth pebbles. how are the particles that make up the driftwood similar to those of the pebbles but not to those of the seawater

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.