50 gram of water is placed into a beaker the mass of the beaker is now 115 grams what is the mass of the empty beaker

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

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

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?