Question

1.375 g of pure cupric oxide was reduced by heating in a current of pure dry
hydrogen and the mass of copper that remained is 1.098 g. In another
experiment 1.179 g of pure copper was dissolved in pure HNO3 and the resulting
copper nitrate converted into cupric oxide by ignition. The mass of copper oxide
formed was 1.476 g. Show that, the results illustrate to law of constant
composition with in the limits of experimental error.​

Answer 1

Answer:

Sorry I don't know‍♀