1. Calculate the molarity of a 4.8 L solution made with 5 moles of BeBr2 2. Determine the molarity of 2.5 L solution made with 698g rubidium chloride (RbBr).

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

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 volume of a 0.0606 m solution of strontium bromide is needed to obtain 0.340 mol of the compound? question 42 options: a)5.61 l b) 3.4 l c) 600 ml d) 1 l e) 178 ml