Calcium carbonates are incorporated into the shells of microscopic marine plants and animals, and then precipitated into the ocean sediments.

This process is which of the following?

evaporite deposition

chemical precipitation

biological precipitation

sediment deposition

How will the emission of an alpha particle affect the atomic number of an atom

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.