Physical Science 20 - March 27

Today we finished Lab C4 by weighing our dry contents of silver and the leftover copper wire.  When students recorded this and cleaned up, we then learned about limiting reactants and how to determine them.  These types of problems occur when we are given a certain amount of each reactant and we have to determine which one limits the amount of product formed.  The one that does is called the limiting reactant.  This involves doing stoichiometry twice, with each separate reactant to determine an amount of a certain product formed.  Whichever reactant yields the lower amount of product will be the limiting reactant.  This was all covered on slides 16-24 in the notes.  Students spent the rest of the class working on Assignment C25, which we will go over on Monday.  Have a good weekend everyone.