Answer: petroleum is the main item in it
Explanation:
People walking on the sidewalk crushthe calcium chloride pellets.
Answer:
The difference between the energy of the reactants and the energy of the products is called the enthalpy change (∆H) of the reaction. For an exothermic reaction, the enthalpy change is always negative. In an endothermic reaction, the products are at a higher energy than the reactants.
Explanation:
Answer:
B. glass
Explanation:
I did research about the topic.
