In the chemical formula 3NO2 the number 3 is a

Fill in the word "long" or "short" in the blank to answer this question. Many smoke detectors use the radioisotope americium-241. A stream of radiation flows between two electrodes.

consider the following reaction, which is at equilibrium. What effect will reducing the volume of the reaction mixture have? CuS (s) + O2 (g) ⇋ Cu (s) + SO2 (g) Consider the following reaction, which is at equilibrium.

When you balance a chemical equation, what are you doing? A. applying the law of conservation of energy B. applying Mendeleev's law C. applying the law of conservation of matter D. applying the periodic law

What is the pressure of the ideal gas when the volume is decreased to 4.0 L and the temperature is increased to 265 K? Pressure = 2.0atm volume = 5.0L temp. = 215 K

Describe how the particles of two substances interact when mixed. Be sure to discuss the activation energy and how the particles achieve it. (More questions on profile)

More polar solvents (eluents) move molecules more rapidly than less polar solvents. If you used a 1:1 hexanes:methanol mixture as solvent, would you expect the products to elute faster or slower?

C12 has 6 protons. how many neutrons does c13 have? a. 6 b. 7 c. 13 d. 19

Imagine you are at a local water park on a hot summer day and your feet begin to get hot from the cement. Looking ahead, you notice that there are two paths you can take to your favorite waterslide.

Determine the pH of a 0.350 M solution of HA. The pkb of A - is 12.830.

Which statement is true about oxygen-17 and oxygen-18?