Here is the question from my last question on

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Determine the reaction and balance the following equations urgent due in the morning

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering