When the following equation br₂ + so₂ + h₂o → h₂so₄ + hbr is balanced, the coefficient, in the lowest whole number, of hbr is
a. 1
b. 2
c. 3
d. 4
e. 5

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