True or false The weighted average of the mass numbers of all the isotopes that
occur in nature for a particular element is the average atomic number.

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

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?

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)