Why do scientists use frequencies in the vhf range?
a. it is the same frequency of many animal calls
b. it can travel long distances
c. it doesn’t hurt animals
d. most animals don’t make sounds in that range

Describe the interaction that occurs between two objects with the same electrical charge.

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3

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