设前者的质量分数为a,后者为1-a,总质量为W克,则铜元素的质量: Wa*63.5/(63.5+16) + W(1-a)*63.5*2/(63.5*2+16) = W*0.88
a = 9.0%
CuO物质的量:W*0.090/79.5 = 0.00113W mol
Cu2O物质的量:W*(1-0.09)/143 = 0.00636W mol
CuO和Cu2O的物质的量之比:0.00113W :0.00636W = 1 :5.6
设前者的质量分数为a,后者为1-a,总质量为W克,则铜元素的质量: Wa*63.5/(63.5+16) + W(1-a)*63.5*2/(63.5*2+16) = W*0.88
a = 9.0%
CuO物质的量:W*0.090/79.5 = 0.00113W mol
Cu2O物质的量:W*(1-0.09)/143 = 0.00636W mol
CuO和Cu2O的物质的量之比:0.00113W :0.00636W = 1 :5.6