Trong dãy các chất dưới đây, dãy nào mà tất cả các chất đều là chất điện li mạnh? A. H2S, NaNO3 , BaCl2 B. KNO3, Ba(OH)2, AlCl3
C. H2O, Ca(OH)2, AlCl3 D. CaCO3, MgSO4, CH3COOH

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

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?

The ammonia molecule in the diagram has the observed bond orientation because