Alcohol A, C10H18O, is converted to a mixture of alkenes B and C under dehydration conditions. Catalytic hydrogenation of B and C yields the same product. Assuming that the dehydration of alcohol A proceeds without rearrangement, determine the structures of alcohol A and alkene C.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

it's c. elements are placed in rows based on how may valencies electrons have.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.