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Entry Task- March 1 st Friday

Entry Task- March 1 st Friday. Entry Task Question: Write it down  2H 2 + O 2  2 H 2 O If there are 4.5 moles of Hydrogen gas, how many grams of water will it create?. Agenda:. Discuss Stoichiometry ws #1 MORE MORE Practice with stoich . HW: Stoichiometry ws 2.

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Entry Task- March 1 st Friday

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  1. Entry Task- March 1st Friday Entry Task Question: Write it down  2H2 + O2  2 H2O If there are 4.5 moles of Hydrogen gas, how many grams of water will it create?

  2. Agenda: • Discuss Stoichiometry ws #1 • MORE MORE Practice with stoich. • HW: Stoichiometry ws 2

  3. 1. Balance the Rxn: Potassium bromide reacts with magnesium metal creates potassium metal magnesium bromide 2 _____KBr+ _____Mg _____MgBr2 + _____ K 2 a. How many moles of magnesium were used to create 8.23 moles of magnesium bromide? Units match 1 molMg 8.23 moles of MgBr2 8.23 = moles Mg 1 molMgBr2

  4. 2 _____KBr+ _____Mg _____MgBr2 + _____ K 2 b. How many moles of potassium bromide are needed to react with 0.255 moles of magnesium? Units match 2 molKBr 0.255 moles of Mg = moles KBr 0.510 1 mol Mg

  5. 2 _____KBr+ _____Mg _____MgBr2 + _____ K 2 c. How many moles of magnesium bromide were produced if 65.5g of magnesium were used? Units match 65.5 g Mg 1 molMg 1 molMgBr2 = moles MgBr2 2.69 24.305 g Mg 1 molMg 65.5 X 1 = 65.5 24.305 X 1 = 24.305

  6. 2 _____KBr+ _____Mg _____MgBr2 + _____ K 2 d. How many moles of potassium bromide were used if 125g of magnesium bromide were produced? Units match 125 g MgBr2 1 molMgBr2 2 molKBr = moles KBr 1.36 184.10 g MgBr2 1 molMgBr2 125 X 2 = 250 184.10 X 1 = 184.10

  7. 2. Tin IV oxide reacts with hydrogen monofluoride to create Tin IV fluoride and water 4 2 _____SnO2 + _____HF  _____SnF4 + _____H2O a. How many moles of Tin IV oxide were used to create 0.643 moles of water? Units match 1 mol SnO2 0.643 moles of H2O 0.322 = moles SnO2 2 mol H2O

  8. 4 2 _____SnO2 + _____HF  _____SnF4 + _____H2O b. How many moles of hydrogen monofluoride were used to create 8.55 moles of Tin IV fluoride? Units match 4 mol HF 8.55 moles of SnF4 34.2 = moles HF 1 mol SnF4

  9. 4 2 _____SnO2 + _____HF  _____SnF4 + _____H2O c. How many moles of Tin IV fluoride were produced if 15.0 g of hydrogen monofluoride were used? Units match 15.0 g HF 1 mol HF 1 mol SnF4 = moles SnF4 0.187 20.00 g HF 4 mol HF 15.0 X 1 = 15.0 20.00 X 4 = 80

  10. 4 2 _____SnO2 + _____HF  _____SnF4 + _____H2O d. How many moles of Tin IV oxide were used if 50.0 g of Tin IV fluoride were produced? Units match 50.0g SnF4 1 mol SnF4 1 mol SnO2 = moles SnO2 0.257 194.7 g SnF4 1 mol SnF4 50.0 X 1 = 50.0 194.7 X 1 = 194.7

  11. Cobalt metal reacts with lead II phosphate to create lead metal to cobalt II phosphate 3 3 _____Co + _____Pb3(PO4)2 _____Pb + _____Co3(PO4)2 a. How many moles of Lead II phosphate were used to create 7.50 moles of lead metal? Units match 1 mol Pb3(PO4)2 7.50moles of Pb 2.5 = moles Pb3(PO4)2 3 mol Pb

  12. Cobalt metal reacts with lead II phosphate to create lead metal to cobalt II phosphate 3 3 _____Co + _____Pb3(PO4)2 _____Pb + _____Co3(PO4)2 b. How many moles of Cobalt metal were used to create 0.67 moles of Cobalt II phosphate? Units match 3 mol Co 0.67moles of Co3(PO4)2 2.01 = moles Co 1 mol Co3(PO4)2

  13. Cobalt metal reacts with lead II phosphate to create lead metal to cobalt II phosphate 3 3 _____Co + _____Pb3(PO4)2 _____Pb + _____Co3(PO4)2 c. How many moles of Lead were produced if 45.8g of Cobalt were used? Units match 45.8 g Co 1 mol Co 3 mol Pb = moles Pb 0.777 58.933 g Co 3 mol Co 45.8 X 3 = 137.4 58.933 X 3 = 176.799

  14. Cobalt metal reacts with lead II phosphate to create lead metal to cobalt II phosphate 3 3 _____Co + _____Pb3(PO4)2 _____Pb + _____Co3(PO4)2 d. How many moles of Lead II phosphate were used if 759 g of Cobalt II phosphate were produced? Units match 759 g Co3(PO4)2 1 mole Co3(PO4)2 1 mol Pb3(PO4)2 = moles Pb3(PO4)2 2.07 366.92g Co3(PO4)2 1 mol Co3(PO4)2 759 X 1 = 759 366.92 X 1 = 366.92

  15. Nickel metal reacts with aluminum sulfate creates aluminum metal and nickel IV sulfate 3 2 4 3 _____Ni + _____Al2(SO4)3  _____ Al + _____ Ni(SO4)2 a. How many moles of nickel were used to create 42.5 moles of nickel IV sulfate? Units match 3 mol Ni 42.5 moles of Ni(SO4)2 = moles Ni 42.5 3 mol Ni(SO4)2

  16. Nickel metal reacts with aluminum sulfate creates aluminum metal and nickel IV sulfate 3 2 4 3 _____Ni + _____Al2(SO4)3  _____ Al + _____ Ni(SO4)2 b. How many moles of Aluminum sulfate were used to create 0.0362 moles of aluminum metal? Units match 2 mol Al2(SO4)3 0.0362moles of Al = moles Al2(SO4)3 0.0181 4 mol Al

  17. Nickel metal reacts with aluminum sulfate creates aluminum metal and nickel IV sulfate 3 2 4 3 _____Ni + _____Al2(SO4)3  _____ Al + _____ Ni(SO4)2 c. How many moles of Nickel IV sulfate were produced if 15.0 g of Aluminum sulfate were used? Units match 15.0 g Al2(SO4)3 1 mole Al2(SO4)3 3 mol Ni(SO4)2 = moles Ni(SO4)2 342.147 g Al2(SO4)3 2 mol Al2(SO4)3 0.0658 15.0 X 3 = 45 342.147 X 2 = 684.294

  18. Nickel metal reacts with aluminum sulfate creates aluminum metal and nickel IV sulfate 3 2 4 3 _____Ni + _____Al2(SO4)3  _____ Al + _____ Ni(SO4)2 d. How many moles of nickel were used if 95.0 g of Aluminum were produced? Units match 95.0 g Al 1 mole Al 3 mol Ni = moles Ni 2.64 26.982 g Al 4 mol Al 95.0 X 3 = 285 26.987 X 4 = 107.95

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