What ionic substance is being used to illustrate the concept of lattice energy in Model 1?

Describe the interaction that occurs between two objects with the same electrical charge.

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate