What is 18,000 expressed in scientific notation?

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.

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

We are hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?