An ion of which element has a larger radius than an atom of the same element?

(1) aluminum (3) magnesium

(2) chlorine (4) sodium

What is the atomic weight of cobalt?

Explain why the air inside of the balloon has more pressure than the air outside.

Which of these equations is balanced? a. 3 H2SO4 + 2Al → Al2 (SO4) 3 + 3H2 b. 2KCl + Pb (NO3) 2 → KNO3 + PbCl2 a b a and b neither

Electrons are transferred in the bonds. Formulas A) ionic B) covalent C) metallic D) all chemical

Which of the following is the mathematical representation of Boyle's law

What are mixtures that have floating particles called?

Which one is a true statement about endothermic reactions? A. Energy from an outside source is continuously being added. B. More heat is given off than is put into the reaction. C. The reactants have less heat energy than the last products. D.

Dalton was an English schoolteacher, Rutherford was a chemist from New Zealand, and Bohr was a Danish physicist. Each made important contributions to the atomic model. Taken together, what do these scientists demonstrate?

How does chemistry affect the food you eat

A gas sample occupies 3.50 liters of volume at 20.°c. what volume will this gas occupy at 100.°c (reported to three significant figures?