how to do these challenging yet interesting stoichiometry problems?

Ali

Member
Joined
May 13, 2008
Messages
567
Reaction score
0
Points
16
There's four parts to this...best with great explanation gets points =D

You are given three unknown hydrocarbon compounds (unknowns A, B, and C), each containinbg onlty carbon and hydrogen. Using the data below, answer the questions that will eventually allow you to determine the identites of the unknowns.

a) Complete combustion of 1.00 g of unknown A resulted in the formation of 1.39 liters of CO2 (at STP) and 2.23 g of H2O. what is the most probable molecular formula of unknown A.
b)Determine the molecular weight of unknown B if the vapor density of B at STIP is 3.13 grams per liter.
c) The empirical formula for unknown B is CH2. Determine hte molecular formula.
d) 1.00 g of unknown C contains 0.817 g carbon. The complete combustion of 1.00 mole of unknown C requires 5 moles of O2. What is the most likely molecular formula of unknown C
 
Back
Top