Name, Study notes of Stoichiometry

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Name Period Intro to Stoichiometry —- Grams to Grams NOTES Step-by-Step If you have grams of a chemical and want grams of a different one 1) Convert from grams to moles. 2) Convert moles of one chemical into moles of another chemical. 3) Convert moles of your NEW chemical into grams of that chemical. 2 H2 + O2 > 2 H20 Ex. 1: Given 68 grams of H2, how many grams of O2 are produced? 68 grams Hz x 1moleth x _1mole0,_ x 32.00 grams 02 1 2.02 grams Ha 2 moles th 1 mole 02 Answer: 538.61 grams of 02 Ex 2: Given 2 grams of 02, how many grams of H2 are produced? 2 grams 07 x 1 mole 63 x _2molesH2 x 2.02 grams H2 1 32.00 grams 1mojeoz 1 moleth Answer: 0.25 grams of H2 Ex 3: Given 8.35 grams of Hz, how many grams of H20 are produced? 8.35 grams Hy x _1ImeteH, _ x _2metesH2,0 x 18.02 grams H20 2.02 grams Hz 2 moles Hz 1 mole Hz0 Answer: 74.49 grams of H20 Ex 4: Given 0.94 grams of Hz, how many gram of 02 are produced? 0.94 gramst x 1 molet x _lmoleO?_ x 32.00 grams 02 1 2.02 grams Ha 2 moles tr 1 mole6z Answer: 7.45 grams of 02