<p>Name: ______Date: ______Period: ______</p><p>Mole to Mole Conversions </p><p>What is Stoichiometry:  Branch of chemistry that deals with the quantitative relationships that exist between the reactants and products in a chemical reaction </p><p> o “Stochio” = Greek for element </p><p> o “metry” = measurement </p><p> Moles allow us to convert between particles, mass, and volume</p><p> o 1 mole = 6.02 x 1023 particles </p><p> o 1 mole = Molar Mass (g/mol) </p><p> o 1 mole = 22.4 L </p><p>Crumbs Inc.:  What if you needed 32 cookies, how much butter would you need?</p><p> What if you had 3 cups of flour and wanted to use it all, how many eggs would you then need? </p><p>Mole Ratios:  Convert from chemical G to chemical W using molar ratios </p><p> o We get the number of moles from the coefficients in the balanced equation</p><p> o Coefficient = # moles in the reaction </p><p>Practice Problems:</p><p>1. How many moles of ammonia can be produced from 11 moles of nitrogen gas? </p><p>= ______2. If you want to react 5.2 moles of hydrogen gas, how many moles of nitrogen gas would be needed? </p><p>= ______</p><p>**Remember all problems must first be balanced!!  </p><p>**Also remember to show all your work and to write the number, units, and chemical in work and answer!!  </p><p>Practice: </p><p>1. How many moles of hydrogen, H2, are needed to react with 2.0 moles of nitrogen, N2? N2 + 3H2 → 2NH3</p><p>= ______</p><p>2. How many moles of oxygen are produced by the decomposition of 6.0 moles of </p><p> potassium chlorate, KClO3?</p><p>2KClO3 → 2KCl + 3O2</p><p>= ______</p><p>3. How many moles of hydrogen are produced from the reaction of 3.0 moles of zinc?</p><p>Zn + 2HCl → ZnCl2 + H2</p><p>= ______4. How many moles of potassium nitrate are produced when 2.5 moles of potassium phosphate react?</p><p>K3PO4 + Al(NO3)3 → KNO3 + AlPO4</p><p>= ______</p>