Calculate the molarity of a solution obtained dissolving 15.0 g of cobalt (Ⅱ) bromide dihydrate in enough water to make 225 mL of solution

Identify each of the following as either a physical change or a chemical change. Explain your answers. A. a piece of wood is sawed in half. B. milk turns sour. C. melted butter solidifies in the refrigerator.

Difference between saturated and supersaturated solutions

2. What is the difference between a formula unit for an ionic compound and a molecular formula for a molecule?

What group are nonmetals highlighted

What is the volume, in liters, of 576 grams of so2 gas at stp?

We are all familiar with the general principles of operation of an internal combustion engine: the combustion of fuel drives out the piston.

A first order reaction has a rate constant of 0.816 at 25 oC. Given that the activation energy is 22.7 kJ/mol, calculate the rate constant at 34 oC. (enter answer to 3 decimal places)

Part b select the ester that is formed when propanoic acid reacts with isopropyl alcohol in the presence of heat and an acid catalyst.

Do metals form anions or cations

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon