Answer is: hot pack.
This is exothermic reaction (energy or heat is released), because reactants have higher energy than products of reaction. Hot pack is mixture of water and salt (usually magnesium sulfate or calcium chloride). When salt dissolves in water, <span>more energy is released than taken in, so process is exothermic.</span>
<span>Metamorphic
rock is a type of rock that the preexisting rock becomes a new rock.
Metamorphism has also different types; the Contact metamorphism and the
regional metamorphism. Contact metamorphism happens when magma is mixed with
the solid rocks in the surroundings. For example when magma is starting to form
igneous rock, it may increase that probability that it will reach the country’s
rock and that’s affected the current formation of the rock. Regional
metamorphism is also called as dynamic metamorphism. This happens when the
pressure from underground makes the rock from above move and change into new
rock formation</span>
The answer is d.) fission :)
Answer: this is dinitrogen dyhidride.
Explanation:
