a mixture of copper and copper oxide mass of 2 g acted with concentrated H2SO4.V (SO2) = 0.56 liters. Find the mass of Cuprum oxide.HELP ME,PLEASE!!

First you start by balancing the equation.



Second you can use the molecular information to find out exactly what amount of what goes with what

2g = Cu + CuO

H2SO4. = 0.56L (I am guessing you mean pure liquid sulfuric acid)

1 Mole of Cu = 64g
1 Mole of CuO = 80g
1 Mole of H2SO4 = 98g
H2SO4 has a densityo of 1.84g/cm3
This means:
1 Mole of H2SO4 = 53.25mL

Can you take it from here?