The best and most correct answer among the choices provided by your question is the third choice or letter C.
Premenstrual syndrome<span> (</span>PMS<span>) has a wide variety of </span>symptoms, including mood swings, tender breasts, food cravings, fatigue, irritability and depression. It's estimated that as many as 3 of every 4 menstruating women have experienced some form of premenstrual syndrome<span>. </span>Symptoms<span> tend to recur in a predictable pattern.</span>
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Based on the data provided, the total energy of the reaction is 1066 kJ and the reaction is endothermic
<h3>What is the total energy of a reaction?</h3>
The total energy change of a reaction is the difference between the total bond energy of the reactants and the total bond energy of the products.
- If the total change in bond energy is positive, the reaction is endothermic.
- If the total change in bond energy is negative, the reaction is exothermic.
- The total energy change of a reaction = bond energy of reactants - bond energy of products
Bond energy of reactants = 2000 kJ
Bond energy products = 934 kJ
Total energy of reaction = (2000 - 934) kJ = 1066 kJ
The total energy of the reaction is 1066 kJ and the reaction is endothermic.
Learn more about bond energy at: brainly.com/question/16997325
A compound is a substance formed when two or more chemical elements are chemically bonded together
Answer:
The digestive system breaks all proteins down into their amino acids so that they can enter the bloodstream. Cells then use the amino acids as building blocks to build enzymes and structural proteins.
Explanation: