Silver oxide `(Ag_2O)` decomposes at temperature `300^@C` yielding matellic silver and oxygen gas. A `1.60g` sample of impure silver oxide yields `0.104g` of oxygen gas. What is the per cent by mass of the silver oxide in the sample ?

Silver oxide (Ag_2O) decomposes at temperature 300^@C yielding mettallic silver and oxygen gas. A 1.60g sample of impure silver oxide yields 0.104g of oxygen gas. What is the per cent by mass of the silver oxide in the sample ?

A sample of impure cuprous oxide contains 66.67% copper, by ,mass. What is the percentage of pure Cu_2 O in the sample? (Cu=63.5)

A 1.50g sample of an ore containing silver was dissolved, and all of the Ag^(+) was converted to 0.124 g of Ag_(2)S . What was the percentage of silver in the ore?

100g of mercuric oxide is heated and decomposed to produce 7.4g of oxygen. What mass of mercury must be produced in the reaction?

100g of mercuric oxide is heated and decomposed to produce 7.4g of oxygen. What mass of mercury must be produced in the reaction?

A 1.50g sample of an ore containing silver was dissolved, and all of the Ag^(+) was converted to 0.125 g of Ag_(2)S . What was the percentage of silver in the ore?

IN the analysis of 0.5 g sample of feldspar, a mixture of chlorides of sodium and potassium is obtained which weighs 0.1180 g . Subsequent treatment of the mixed chlorides with silver nitrate gives 0.2451 g of silver chloride. What is the percentage of sodium oxide and potassium oxide in the sample ?

20.2 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample? (At wt Mg=24 )