Explain the color changes of bromothymol blue during sn1 solvolysis of tert-butyl bromide, upon addition of koh (describe how the color changes and why).

Sometimes, water vapor on a surface may freeze without first becoming liquid water. What forms when this occurs?

What describes the rate of a nuclear decay reaction? A. The reaction rate can be affected by temperature and pressure. B. The reaction rate can be affected by the amount of reactant remaining. C.

You measure the absorbance of each solution (at λmax = 524 nm) and obtain the following results: Solution Absorbance Stock solution 3.04 Solution #1 0.494 Solution #2 0.338 Molarities Stock: 8.1*10-5M Solution 1: 1.338*10-5M Solution 2: 9.

If a new element were discovered and it was found to form 1 - ions, in which group would you place it in the periodic table?

The mass of an erlenmeyer flask is 85.135 g. after 10.00 ml of water is added to the flask, the mass of the flask and the water is 95.023 g. calculate the density (in g/ml) of water.

You are given a clear solution of KNO3. Using 3-4 sentences explain how you would determine if the solution is unsaturated, saturated, or supersaturated

Which element combination (s) would result in electrons being shared? [] sodium (Na) and oxygen (O) [] carbon (C) and fluorine (F) [] oxygen (O) and hydrogen (H) [] aluminum (Al) and chlorine (Cl)

If you start with 4 moles of iron and 3 moles of oxygen to produce iron oxide, what is the limiting reagent? (You will need to balance the equation first.) Fe + O2 - > Fe2O3

Is burning wood a physical change

A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)