What element has 8 valence electrons

General properties of matter include all but which of the following. a. Mass b. Color c. Volume d. Denstiy

How many kilograms of water can be evaporated from a 1 m2 surface of water in a lake on a hot, clear summer day, if it is assumed that the limiting factor is the Sun's heat of 1800 Js-1m-2 for an 8-hour day?

Consider the following reaction at equilibrium. What effect will increasing the pressure of the reaction mixture have on the system? CuS (s) + O2 (g) ↔ Cu (s) + SO2 (g) No effect will be observed.

What must models and theories do in order to remain valid

12) Which of the above solutions could be used to remove lead from lead (II) nitrate? a. Cu b. Hg c. Ag d. Ni

At room temperature and pressure what is the volume of one mole of oxygen?

Ibuprofen, a common pain remedy, has an empirical formula of C7H9O and a molar mass of approximately 218.078 grams per mole. What is the molecular formula of ibuprofen?

Copper (cu) is a transition element used in the making of coins. calculate the mass in grams of 0.0420

In 1864, the Solvay process was developed to make soda ash. One step in the process is represented by the balanced equation below.

A chemist must prepare of aqueous potassium permanganate working solution. He'll do this by pouring out some aqueous potassium permanganate stock solution into a graduated cylinder and diluting it with distilled water.