What volume of 0.100 m na3po4 is required to precipitate all the lead(ii) ions from 300 ml of 0.250 m lead

How are elements arranged in a periodic table

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

An observation that requires measurement is called quantitative observable or qualitative