What is the potential energy of the bowling ball as it sits on top of a building?

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle