Stoichiometry Stoichiometry: is the study of the calculations of amounts of substances involved in chemical equations.

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Presentation transcript:

Stoichiometry Stoichiometry: is the study of the calculations of amounts of substances involved in chemical equations

Steps to Solve Problems 1) Determine what you are given and what you need to find 2) Write a balanced chemical equation 3) Determine appropriate conversion factors Coefficients from balanced equations will convert between different substances

Steps to Solve Problems 4) Place in factor label and solve 5) Give units on final answer

Mole to Mole Conversions Calculate the number of moles of Nitrogen (N2) required to produce 7.24 moles of ammonia (NH3)

Additional Examples Calculate the number of moles of H2 needed to produce 6.7 moles of HCl Calculate the number of moles of H2O produced when 4.56 moles of Oxygen react with Hydrogen

How many atoms are in 2.34 mol of Cu? Calculate the molar mass of: Warm-Up 12/5/2016 How many atoms are in 2.34 mol of Cu? Calculate the molar mass of: a) PCl3 b) NaF c) Cu 3. How many mol are in 4.25 x 1024 particles of PCl3?

Additional Problems A. 2 LiOH + CO2  Li2CO3 + H2O 3.00 moles LiOH produces ____ moles H2O B. NaHCO3 + HCl  NaCl + H2O + CO2 2.34 moles HCl produces ______ moles NaCl C. N2 + 3 H2  2 NH3 24.56 moles H2 require _________ moles N2

Mass-Mole Conversions Calculate the number of grams of NH3 produced from 3.00 moles of H2 reacting with N2

Additional Examples How many grams of Chlorine can are produced when 4.89 mol of HCl decomposes?

Addition Problems How many grams of H2 are produced when 9.45 moles of HCl decomposes? Calculate the number of grams of H2O produced when 2.459 moles of Oxygen react with Hydrogen

Additional Examples 5 C + 2 SO2  CS2 + 4 CO How many moles of Carbon disulfide can be produced from 8.00 grams of SO2? How many moles of mercury (II) oxide are needed to produce 125 g of O2? 2 HgO  2 Hg + O2

Mass to Mass Problems Example # 1 How many grams of Al2O3 are produced when 48 grams of O2 react with Al?

Practice Calculate the number of grams of H2 needed to produce 7.148 moles of HCl

Practice Calculate the number of grams of H2O produced when 2.459 moles of Oxygen react with Hydrogen

Example If 7.99 g of Hydrogen react with Oxygen, how many grams of water are produced?

Example If 13.25 grams of Magnesium reacts with Chlorine, how many grams of MgCl2 can be produced?

Example If 1.256 g of Hydrogen react with Oxygen, how many grams of water are produced?