What is the mass, in kilograms, of 2.46 x 1020 formula units of barium chloride?

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

What is the common name for the compound shown here? enter the common name of the compound shown?