A pure salt contains an unknown metal cation (M) and the sulfate anion, where M belongs to either group IA or IIA. 1.42 g of this salt was dissolved in water and treated with an excess of aqueous calcium chloride resulting in the formation of a precipitate. The precipitate was collected, dried and found to weigh 1.36 g. Determine the atomic mass of M and identify M.

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?

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point