What are valence electrons? how many of a magnesium atom's 12 electrons are valence electrons?

Consider the following reaction: SO2Cl2 (g) ⇌SO2 (g) + Cl2 (g) A reaction mixture is made containing an initial [SO2Cl2] of 2.1*10-2 M. At equilibrium, [Cl2] = 1.1*10-2 M. Calculate the value of the equilibrium constant (Kc).

What is the net ionic equation for Al (OH) 3 (s) + 3HBr (aq) = AlBr3 (aq) + 3H2O (l)

I'm working on a P1V1=P2V2 problem. I have all the information in and is has equaled 146.686235. Would I round this to 147 or 146.69 or neither?

Calculate the weight in grams of the primary standard solid oxalic acid needed to prepare 250 ml of a 0.200 n solution to be used in this laboratory exercise.

A student mixed some yellow sulfur powder with some iron filings. She was able to take the iron out of the sulfur by using a magnet. She then remixed the iron and sulfur in a test tube and heated it.

A chemical base may be defined as a compound which contributes hydroxide ions or increases the OH concentration when dissolved in water. True False

Correct name for LiCl

What is anisotropy. Explain briefly with example.

Which is measured using a calorimeter

5) Solid lithium metal is added to an aqueous solution of magnesium chloride forming lithium chloride solution and solid magnesium a. If you begin the reaction with 15.0 g of lithium and 25.