Question: how many hydrogen atoms are in an acyclic alkane with 6 carbons?
Answer: Alkanes have the general formula CnH2n+2. For example, an alkane with 2 (n) carbon atoms, will have 6 (2n + 2) hydrogen atoms. Their adjacent atoms are connected with sigma bonds and form tetrahedral centers around the carbon atoms. As these bonds are all single bonds, there is free rotation around all connections.