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Copy of stoichiometryquiz1-1

# Copy of stoichiometryquiz1-1 - %mass B 25 H 25 1 25 example...

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Stoichiometry- reactions example 1 (email #20) Reactant Reactant Product equatiuon aA bB goes to cC example CH4 2 H2O equivalents from equation 1 2 2 given mass (g) 13.6 23.9 MM=molar mass 16 32 18 mol=mass/MM 0.85 0.75 mol needed mol needed mol produced H2O conversions from A: (molesA) *(x/a) 1.7 1.7 conversions from B 0.37 0.75 mass w/LR 13.44 example 2 (quiz q#3) Reactant Reactant Product equatiuon aA bB goes to cC example 2 H2 2 H2O equivalents from equation 2 1 2 given mass (g) 12 MM=molar mass 2 32 18 mol=mass/MM 6 mol needed mol needed mol produced H2O conversions from A: (molesA) *(x/a) 3 6 mass w/LR 108 Empirical formula example 1 MM % in 100 % convert to g (in 100g) MM moles=mass/MM % mass A 75% C 75 12 6.25

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Unformatted text preview: %mass B 25% H 25 1 25 example 2 quiz 1 question 1 80 % C 80 12 6.67 20% H 20 1 20 moles - mass example quiz #5 g MM moles molecules mass ch4 4 16 0.25 1.51E+023 2 O2 O2 quiz q#4 mass number atom number elemen 40 20 X 40 20 p+n p from PT Ca = 20 p Ca 2 A group S (oxygen group) calcum and sufur Ca2+ S2-cross multiply sup to subscripts CaS Product dD CO2 1 44 mol produced CO2 mass in g 0.85 more with CH4 (not real) 0.37 L.R. less with O2 (real) 16.43 Product dD molecules atoms 3.61E+024 7.23E+024 empirical formula divide w/ lowest 1 C:4 H CH4 4 1 CH3 3 atoms H 6.02E+023...
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Copy of stoichiometryquiz1-1 - %mass B 25 H 25 1 25 example...

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