explain why the salt of a weak acid, as well as the acid itself, must be present to form a buffer solution.

There are main groups in the modern periodic table of elements

What material does not melt at any temperature

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2