Element x and element y have a difference in electronegativity of 0.7. will the bond xy be covalent or ionic? Explain using the electronegativity difference.

What is the mass of 4 molecules of co2

Which description best characterization the motion of particles in a solid

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