Consider the reaction 2 COF2 (g) ⇌ CO2 (g) + CF4 (g) Kc = 2.00 at 1000 °C. A pure sample of COF2 is heated to 1000 °C in an evacuated container and allowed to reach equilibrium. At equilibrium, [CF4 ] is 0.266 M. What percentage of the original sample of COF2 decomposed to reach equilibrium?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate