According to the Gibbs free energy equation, G = H - TS, when could a high temperature make a reaction that was nonspontaneous at low temperature spontaneous?

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i