The alkali earth metal beryllium (Be) engages in a chemical reaction and loses all of its valence electrons. What charge does beryllium have after the chemical reaction? 6- 6- 6+ 6+ 2+ 2+ 2- 2-

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

What is the empirical formula for c4h8o2

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88