CHE 131 Lecture Notes - Lecture 7: Stoichiometry, Balance Equation, Molar Mass

• School: Stony Brook University
• Department: Chemistry
• Course: CHE 131
• Professor: Benjamin Hsaio, Jiangyong Jia, Roy Lacey

Document Summary

Charge of reactant side = charge of product side. Atoms and charge are conserved in chemical reactions. Che 131 lecture 7 chemical reactions & stoichiometry. A statement using chemical formulas that expresses both the identities and the relative amounts of reactants and products involved in a chemical or physical change. Conversion between the masses of any two substances involved in the same chemical reaction. Write a balanced chemical equation for the reaction. Convert from the given mass to moles of the same substance. Write a conversion factor using the coefficients from the balanced equation, and convert to moles of the second substance. To balance a chemical equation: write a skeleton equation, balance the atoms, adjust the coefficients such that they are the smallest whole number coefficients, do final check to make sure equation is balanced. Is the amount of product obtained experimentally from a chemical reaction. 16 atoms of cu react with 1 molecule of s 8 .