[yeahyeayeah]

So....I need these solved with detailed explanation if possible please. I'd greatly appreciate it. 

Here they are.

The mixture of propane and btutene with mass of 40 gr append catalytically the hydrogen. Mass fraction of butene in the mixture is 56%. Determine the volume of hydrogen (in liters, normal conditions) which is appended to the mixture of hydrocarbons.

...and this one . Dichloroethane is used as a cleaning solvent of organic substances in textiles. Calculate what mass of chlorine and ethane that are required to obtain 3.96 kilograms of 1.2-dichloroethane.

Thanks a lot for your time in advance 

[sjb]

What have you tried?

For the first one, for instance, how do propane and butene react with hydrogen?

[Enthalpy]

And for the second question, you're supposed to write a synthesis equation from ethane to dichloroethane.

Bizarre question, though, since the solvent is produced from ethylene.