Answer:
D. enzyme catalysts to speed up reactions
Explanation:
In order to digest food, the human body requires enzyme catalysts to speed up reactions. The digestion process starts from the mouth, to the stomach to the small intestines. In the mouth, we chew the food and mixes it with the saliva which contains salivary amylase. In the stomach, pepsin is the enzyme present. It digest proteins and nutrients from foods are sent to the different parts of the body that needs it.
Charge ion for Mg is 2+
While 2+ is represents two electrons that had been released. It donors two electrons to oxide ions as oxide ions are 2-. 2- is represents as electron acceptor for two electrons. At the end, the empirical formula for this reaction is Mg2O2
Acid-base conjugate pair forms when the element donates a proton and another species acquires it. and are the base-conjugate acid pair.
<h3>What is base-conjugate acid pair?</h3>
Acids are the species or element and compounds that donates proton or hydrogen ions to form a conjugate base.
Bases are the elements or compounds that acquires protons or hydrogen ions and form a conjugate acid pair.
Conjugate acids and bases are the species or the products formed when the protons or hydrogen ions are increased or decreased in their chemical structures.
The reaction can be shown as,
From the reaction, it can be said that the water molecule acquired the hydrogen or the proton ions and the hydronium ion produced as a result is the conjugate acid of the water base.
Therefore, and are the base-conjugate acid pair.
Learn more about conjugate acid and base here:
brainly.com/question/4379868
Answer:
9.64
Explanation:
pH + pOH = 14
Since pOH = 4.36, pH would be:
pH = 14 - pOH
pH = 14 - 4.36
pH = 9.64
Since the atomic mass is an average of the masses of all isotopes of that element, you have to consider which isotope is most abundant. In this case, the atomic mass is closest to twelve, so the most abundant isotope of carbon is Carbon 12.