Stoichiometry Problems
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This document contains 10 stoichiometry questions and their answers. It discusses concepts like determining coefficients in a balanced chemical equation, calculating the number of atoms or moles of substances, determining empirical formulas from mass composition, identifying limiting and excess reactants, and calculating percent yields in chemical reactions. Each question is briefly stated and followed by the short answer provided by A.J. Herrera.
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Here are the steps to solve this problem:
1) Balance the equation: Zn + I2 → ZnI2
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- 2. QUESTION 1 What is the coefficient of carbon dioxide when the if Equation when isopropyl alcohol was combusted is balanced with the smallest whole number coefficient? C3H80 + 02 CO2 + H2O Answer: 3 by A.J. Herrera
- 3. QUESTION 2 Determine the number of sulfur atoms in 27.1 g of molecular sulfur. Answer: 5.09x10^23 by A.J. Herrera
- 4. QUESTION 3 What is the formula weight of Ca3(PO4)2 ? Answer: 310 amu by A.J. Herrera
- 5. QUESTION 4 Calculate the percent by mass of nitrogen in ammonium nitrate (NH4NO3) Answer: 35.0% by A.J. Herrera
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