How many molecules are in 5.00 grams of NH3? a 0.294
b 0.333
C 1.77 x 1023
d 6.68 x 1022
e 2.00 x 1023

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