How many chlorine atoms are there in the reactants: 2al+3cl2→2alcl3? ?

a. 2
b. 1
c. 3
d. 6

The first element on the periodic table of elements is carbon. a. true b. false

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.