Meaning of electron affinity

What are formed when sodium ions and chlorine ions combine to produce nacl?

You want to find the volume of a marble. How would you do it?

In a problem you are given two volumes and one pressure at a constant temperature and amount of gas. You are asked to find a second pressure. What law should you use?

How many atoms of hydrogen are in 0.75 mol of (c3h5) 2s?

The atmosphere in a sealed diving bell contained oxygen and helium. if the gas mixture has 0.200 atm of oxygen and a total pressure of 3.00 atm, calculate the mass of helium in 10.0 l of the gas mixture at 20oc. [1] g

The energy needed to get a reaction started is the a. enzyme energy. b. activation energy. c. catalyst energy. d. chemical energy.

A solution is made by dissolving 8.2 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution.

What is the molarity of an aqueous solution containing 40.0 g of glucose (C6H12O6) in 1.5 L of solution?

List at least 3 factors that can influence a body's temperature after death.

The mass of a 2.0 centimeter3 sample of a substance is 3.2 grams. Calculate the density of the substance. Type the correct answer in the box.