Why in group 1, the reactivity increases

What is the very small center core of an atom is called?

Calculate the mass of each sample. a. 15.7 mol hno3 b. 1.04 * 10 - 3 mol h2o2 c. 72.1 mmol so2 d. 1.23 mol xenon difluoride

A chemist dissolves of pure barium hydroxide in enough water to make up of solution. calculate the ph of the solution. (the temperature of the solution is.) be sure your answer has the correct number of significant digits.

How many grams of sodium iodide, nai, must be used to produce 97.1 g of iodine, i2?

Scuba divers breathing air at increased pressure can suffer from oxygen toxicity-too much oxygen in the bloodstream-when the partial pressure of oxygen exceeds about 1.4 atm.

How did scientist respond to copernicus's discovery?

In a chemical reaction where does the energy gets stored

Describe pyruvate processing

Describe the factors that affect surface and deep water currents

Which of the following would be a good use for a nonmetal? handle of frying pan electrical wires structural components in buildings coinage