For what experimental circumstance would one want to use a pathlength other than 1.000 cm for an absorbance experiment

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

What happens to the atomic radius when an elctron is lost

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?