Hydrocarbons (not to be confused with carbohydrates) are molecules containing only carbon and hydrogen atoms. Examples include methane (CH4) and benzene (C6H6). How many hydrogen atoms are present in a linear hydrocarbon chain of nine carbons joined to each other by single covalent bonds? Hint: remember you need to satisfy the octet rule for each carbon.

20 hydrogen atoms

Explanation:

Let us carefully observe the words of the question. We were told that the compound is a hydrocarbon. This implies that it is composed of only hydrogen and carbon.

Secondly, we are informed that the compounds is composed of only C-C single covalent bonds. This means that the compound is an alkane.

Then we are told that it contains nine carbon atoms and is a linear molecule. Hence, the compound must be n-nonane.

Recall that for alkanes, the general molecular formula is CnH2n+2 Substituting n=9 for nonane we have; C9H(2*9)+2 which is C9H20.

Thus there are 20 hydrogen atoms. The structure of the compound is attached to this answer

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation: