How many grams of Carbon-14 will remain after 17,100 years?

For the following, determine the type of reaction and then give products.

Which part of a feedback mechanism is able to monitor the conditions outside of cells and usually uses nerve cells to relay this information to an intergrating center

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.