Answer: B. 5
Explanation: A neutral atom has equal number of electrons and protons.
Whenever a neutral atom loses electron it acquires a positive charge. Thus in order to acquire 3+ charge, it must lose three electrons. Thus the number of protons exceeds the number of electrons.
Thus the number of electrons left will be (8-3) = 5 electrons.
If an atom gains electrons, it acquires a negative charge and the number of electrons exceeds the number of protons.
Explanation:
The physical properties of organic compounds typically of interest include both quantitative and qualitative features. Quantitative information includes a melting point, boiling point, and index of refraction. Qualitative properties include odor, consistency, solubility, and color.
Answer:
Cholesterol, which is composed primarily of carbon and hydrogen atoms, is therefore insoluble in water.
Explanation:
Cholestorol is a sort of lypid, which are insoluble in water. They are only soluble in non polar solvents.
As it is soluble in non polar solvents, it is not a polar molecule, either a buffer.
This molecule is one of the four basic molecules for life (lypds, carbon hydrates, nucleic acids and proteins)
Relationship between [H3O+] and [OH-] is:
[H3O+] X [OH-] = 1.00 X10^-14
Rearranging gives:
[H3O+] = 1.0X10^-14 / [OH-]
Just plug in and calculate your [H3O+] values