The answer should be (D) endothermic reaction.
Reason : - Reactions in which energy is absorbed are called endothermic reactions. In your provided question, 150 kcal energy is being <u>absorbed</u>, and thus, we can say that it is an endothermic reaction.
Explanation:
Just a few things to remember:
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# of neutrons = Mass number - # protons
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Mass number = # protons + # neutrons
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Atomic Number = # of protons
- # of electrons = # of protons - charge on the atom
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Symbol - use the atomic number to find the element in the periodic table
A catalyst affects a chemical reaction by accelerating it. It also offers an alternative way for the reaction to happen that lowers the amount of energy needed.
D. the law of conservation of energy