Which of the following best describes a precipitate? A. a solid formed when two solutions are mixed

B. a solid formed when a liquid freezes

C. a layer of liquid formed when oil and water are mixed

D. a gas formed when alcohol evaporates

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Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Why is silver chloride is an ionic compound

Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?