What kinds of data do surface weather maps provide

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust