The sun is brighter than which star classification

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

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules