The data table below represents the properties determined by the analysis of substances A, B, C, and D. Substance Melting Point (°C) Boiling Point (°C) Conductivity
А
-80
- 20
none
B
20
190
none
С
320
770
assolid
D
800
1250
in solution
Which substance is an ionic compound?

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180