[greenmoon]

1.15 L (density 0.8 g/cm³)of ethanol are obtained by using ethene as raw material.If half of the ethanol is oxidized to aldehyde with the help of the oxygen resulted from the action of K2Cr2O7 and H2SO4 concentration 1M.What is the volume of ethene and H2SO4?

I wrote the equations:
CH2=CH2 +HOH ->CH3-CH2-OH

CH2-CH2-OH + [ O ] -> CH3-CH+O + H2O

K2Cr2O7+4H2SO4 -> K2SO4 +Cr2(SO4)3+4H2O+3[ O ]

Then I calculated the weight of ethanol as being 0.92 g but I don't know what to do after that.

[Hunter2]

First check your units. 0.92 g is wrong.

If you have the right mass, calculate the moles of alcohol. Then you know the moles of ethene in your first equation. The volume can be obtained by the ideal gas equation. But you need pressure and temperature.

The moles of sulfuric can also be calculated in the same way. You know the molarity of it and can calculate the volume.