Will a precipitate form when each of the following pairs of solutions is mixed? If so, give the formula of the precipitate, and write the net ionic equation for the reaction. a) Barium hydroxide + potassium carbonate b) Ammonium chloride + silver nitrate c) Sodium sulfate + aluminum chloride

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?

What is the enthalpy of combustion (per mole) of c4h10 (g)? –2,657.5 kj/mol –5315.0 kj/mol –509.7 kj/mol –254.8 kj/mol