Tell me step by step how to do 3/5 divided by 5.

Once similarity and one difference between a mixture of elements and a mixture of compounds

Which of the following compounds would be expected to have the strongest ionic bonds? a)the compound that has b)the largest ions with the greatest charge c)the compound that has d)the largest ions with the least charge the compound that has the smallest ions with the greatest charge the compound that has the smallest ions with the least charge

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!