Question

PLEASE HELP!!!!!

a 0.0500 g mixture of Cu2O and CuO contains 0.425 g Cu. What is the mass of CuO in the mixture?

Answer 1

you have to use two equations:

(1) mass of CuO(molar mass of Cu) + mass of Cu2O (mass of 2 Cu) = 0.425 g
(2) mass of CuO (molar mass of CuO) + mass of Cu2O (molar mass of Cu2O)= 0.5g

you can use x and y instead of words


(1) x(molar mass of Cu) + y(mass of 2 Cu) = 0.425 g
(2) x(molar mass of CuO) + y(molar mass of Cu2O)= 0.5g

x is the mass of CuO

Answer 2

in the first equation i meant
(1) x(molar mass of Cu) + y(MOLAR** mass of 2 Cu) = 0.425 g