Did you ever ask yourself, why water boils at 100oC while ethyl alcohol evaporates at 78oC? why do you think we need to give higher temperature for
sulfuric acid (battery acid) to boil (higher than 300oC)? Write your answer in the

box below.

The answer to this problem is. 67

1. why does the same side of the moon always face earthc.the rotational period of the moon is equal to one revolution around earth2. which is greater the moons period of rotation or its period of revolution  b.the moons revolution period around earth3.what was the major accomplishment of the apollo missions  c.sending the first human into space4. which of these space missions involved the deployment of lunar roversa. voyager 15. which scientists are going to explore next on kepler-186fd. evidence of existence of life6.which mission is not going to explore the outside of the solar  systemb.safir7.which technology limit the future of space explorationb. scientist must first develop certain technologies before missions can be completed.