Students in a science class performed an experiment with hot and cold water. They dyed the hot water red and the cold water blue. When the students mixed the water together, they noticed that the hot water rose to the top and the cold water sank. Eventually all the colored water mixed together. What kind of heat transfer did they observe happening?

i think it evaporated

Explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2