What is the electron configuration of cobalt?

Dalton's model did not recognize that atoms of different elements a. can have different charges. b. have different masses. c. have different properties. d. form different compounds.

What is the percent yield for the reaction pcl3 (g) + cl2 (g) ? pcl5 (g) if 119.3 g of pcl5 (? = 208.2 g/mol) are formed when 61.3 g of cl2 (? = 70.91 g/mol) react with excess pcl3? a 66.3%?

10) Aluminum is a highly reactive metal that oxidizes when exposed to air. Which of these would be a good first step in balancing this reaction? Al + O2 → Al2O3

How do mass and volume relate to density?

What is the best way to determine whether a substance is an acid or a base?

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g Hl into mol using molar mass)

Which of the following describes a reaction that reaches equilibrium?

What happens to water during evaporation? A) It turns gas as it cools. B) It turns to liquid as it cools. C) It turns to solid as temperature decreases. Eliminate D) It turns to gas as the temperature increases.

A gas can holds 2.9 gal of gasoline. what is the quantity in cubic centimeters

In a chemical equation what name does the left side have