Which of the following pairs would have the greatest coulombic attraction in a solid compound? 1. mg2+, s2- 2. mg2+, se2- 3.mg2+, o2-

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth