When cooled, a liquid will first change into which new phase? Meta-liquid?
Solid?
Gas?
Plasma?

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?

Find the mass, in grams, of 5.00*10^23 molecules of f2

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false