Write and balance the equation for the decomposition of aluminum chloride into its elements. phase symbols are optional.

What is the mass in grams of one mole of many of any substance known as

Describing physical and chemical changes: An industrial chemist is studying a sample of an unknown metal. Describe two ways he could change the metal physically and two ways he could change the metal chemically to try to identify it.

What do the carbon, oxygen, and nitrogen cycles all have in common? a. They all include an exchange of gases with the atmosphere. b. None of the cycles are biogeochemical cycles. c. They are all byproducts of photosynthesis. d.

Which of the following is the most electronegative element? a. He b. I c. N d. O e. C

What are 3 characteristics of chemical reactions

Which usually has a higher temperature? A city or the areas around the city?

Toluene and pyridine form ideal solutions. Consider a solution of toluene and pyridine prepared at 25°C. Assuming that the mole fractions of toluene and pyridine in the vapor phase are equal, calculate the composition of the solution.

Formula for water what does the lack of a subscript after those O indicate

Why do the chemical properties cycle through each period? Every eighth element starting with hydrogen restarts the transition from metal to inert gas. Elements with atomic numbers which are multiples of eight start a new period.

Which statement correctly describes the Ka of a weak acid? The Ka is large, and the equilibrium favors products. The Ka is large, and the equilibrium favors reactants. The Ka is small, and the equilibrium favors products.