2TbF3 + 3Ca à 3CaF2 + 2Tb
Given 27.5 g TbF3 and 6.96g of Ca, how many grams of Terbium can
be isolated? How many grams of the excess reactant are left over?

10-14. (a) when 100.0 ml of weak acid ha were titrated with 0.093 81 m naoh, 27.63 ml were required to reach the equivalence point. find the molarity of ha. (b) what is the formal concentration of a- at the equivalence point? (c) the ph at the equivalence point was 10.99. find pk. for ha. (d) what was the ph when only 19.47 ml of naoh had been added?

What is a difference between a mixture of elements and a mixture of compounds

37.0 °c = °f (human body normal temperature)