DO NOW Pick up notes. Get out Simple Stoichiometry handout (back of yesterday’s notes).

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Presentation transcript:

DO NOW Pick up notes. Get out Simple Stoichiometry handout (back of yesterday’s notes).

SIMPLE STOICHIOMETRY 0.040mol NaCl 15.0mol O2 3.0mol KClO3 321g NaCl 365g HCl

STEPS TO FOLLOW 1. Write down what you know and what you need to find out. 2. Write the balanced chemical equation. 3. Determine the number of moles of the given substance. You may have to convert it from grams to moles. 4. Determine the mole ratio between what is known and what is unknown. 5. Convert the unknown moles to grams if needed.

MASS – MASS CONVERSIONS Example: How much silver chloride, AgCl is produced from 17.0 g silver nitrate, AgNO3 with an excess of sodium chloride, NaCl? WYK: ?g silver chloride from 17.0g AgNO3 EQN: SOLVE:

MASS – MASS CONVERSIONS SOLVE: 17.0 g AgNO3 1 mole AgNO3 1 mole AgCl 143.32g AgCl 169.55 g AgNO3 1 mole AgNO3 1 mole AgCl = 14.370038 = 14.4 g AgCl

PRACTICE How many grams of Cu2S can be produced from 9.90 g CuCl and excess H2S? WYK: EQN: SOLVE:

PRACTICE How many grams of Cu2S can be produced from 12.0 g H2S with an excess of CuCl? WYK: EQN: SOLVE:

TO DO Mass to Mass Stoichiometry problems due tomorrow.