Hey I hve problems with calculate stoichiometry problems and next week I have a test about it can someone help me out and give me a site where everything is written step by step ....thank u guys :) I REALLY NEED HELP NO JOKING

Answer 1

I must have posted this to you last night 10 times. It is a step by step example of a stoichiometry problem (KClO3 and oxygen) and it shows you step by step what to do. If you don't understand something about it, post with a copy of what you've done and explain the trouble you are having.
http://www.jiskha.com/science/chemistry/stoichiometry.html

Answer 2

C3H8+5O2=3C02+4H2O what volume of oxygen is needed for the complete combustion of 50cm of propane

Answer 3

pie=3.14