What is meant by the frequency of a wave? What are the units of frequency? Describe the relationship between frequency (v) and Wavelength (À).

Noble gases are the most reactive elements on the periodic table. a. true b. false

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

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?