Which is a chemical property of hydrogen? a. it is a light gas. b. it is a combustible gas. c. it is a colorless gas. d. it has a boiling point of -252.87°c. e. it is a good conductor of electricity.

How many molecules are found in 1.32 mol of nacl?

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?

Which of the following has expanded our knowledge of the universe beyond our solar system the most? a. manned space travel b. the hubble space telescope c. the pioneer and voyager missions d. the international space station