Cumulative exam
exam active
how much dia sample remains after five half-lives have occurred?
5 of the ongenal sample
25 of the ongnal sample
132 of the ongnal sample
54 of the orginal sample

When the water vapor cools it condenses select a number that represents his process on the

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.