TEEMAH

A metal has two oxides,X and Y.when each of the oxides was heated to a constant mass in a current of pure hydrogen,the following results were obtaided.1.85 of X gave 0.32g of oxygen,1.90 of Y gave 0.38g of oxygen.show that these results illustrate the law...

12.3g of iron(ii)tetraoxosulphate(vi)crystals when heated gave 6g of the anhydrous salts.if only its water of crystalisation is lost as a result of the heating,calculate the % by mass of the water of crystalization.

Vitamin c,which may or may not be affective in preventing cold,is an organic compound containing carbon,hydrogen and oxygen.analysis of a carefully purified sample give c=40.9%,h=4.58%,o=5.45%.from another experiement to be 180.from these data,determine:(...