Phosphoric Acid - The last answer choice
Answer:
Energy was released
Explanation:
Decrease in temperature means less energy, but the energy had to have been transferred because energy can't be destroyed or created. So if the temp. went down, energy must have been lost. (If it had been absorbed, the temp. would have gone up)
he is a good scientist because he postulated that chemical reactions resulted in the rearrangement of the reacting atoms
