Answer:
Alkyne
Explanation:
The homologous series for this compound is the Alkyne because of the presence of the triple bond present between the third and fourth carbon atoms as seen in the picture attached.
Carbon Dioxide is the answer
Answer is d both hydrogen and helium will remain the same
Answer:
gradient
Explanation:
Unlike the change in pressure and density, which decrease with altitude, changes in air temperature are not regular. A change in temperature with distance is called a temperature <em>gradient.</em>