[redpillchick]

hey fam xx my orgo lab teacher doesn't teach us anything and i really need help passing this lab any help would be appreciated!

A mixture of ethyl Iodide (bp 72.3) and water boils at 63.7 degree Celsius. what weight of ethyl iodide would be carried over by 1 g of steam during steam distillation?

the condensate from a steam distillation contains 8 g of an unknown compound and 18 g of water. the mixture steam distilled at 98°C. What is the molecular weight of the unknown?

[AWK]

The laboratory steam distillation is not an equilibrium process. Any calculations assuming the equlibrium will be very crude.
Look at you chemical engineering calculation textbook.

[orthoformate]

AWK is right, but for your purposes you can use Dalton's Law, your organic lab teacher should accept that.

[orgopete]

This is a partial pressures problem. Look up the partial pressure of water at the indicated temperature. The remainder is the partial pressure of the organic. Total = Pp1 + Pp2. Etc.