If the volume of a balloon is doubled while the temperature is held constant, what change occurs to the pressure?

When a police officer uses radar for speed control, the officer is using what kind of eletromagnetic waves?

How do you find out the average rate of reaction

Which allotrope of carbon was discovered most recently (so its uses are fairly unknown) ? a. graphite b. diamond c. fullerene d. coal

Which of the following is an example when an uncontrolled experiment is best? A. When working with the han body B. When testing plant growth C. When testing the effect of water on a lawn D. when testing the effect of sugar on a starch

Who started a colony for the Quakers? A) John Smith B) Lord Baltimore C) William Penn D) Sir George Carteret

Pentaborane b5h9 (s) burns vigorously in o2 to give b2o3 (s) and h2o (l). what is δh° for the combustion of 1 mol of b5h9 (s) ? substance δh°f (kj/mol) b2o3 (s) - 1273.5 b5h9 (s) + 73.2 h2o (l) - 285.8

What is the definition of STP?

Which of the following is a possible definition of a base? A. A substance that increases the concentration of hydronium ions in a solution B. A compound that is a hydrogen ion acceptor in an acid-base reaction C.

Which of the following contains the smallest amount of matter

Which best describes the relationship between solute, solvent and solution? 1. A solution and solute combine to form a solvent 2. A solute is dissolved in a solvent to form a solution 3. A solvent is dissolved in a solute to form a solution 4.