Convert the following to Celsius 16) 100o K ________ 17) 200o K ________ 18) 273o K ________ 19) 350o K ________ Concept of mole/molar ratio 1) How many moles of sodium atoms correspond to 1.56x1021 atoms of sodium? 2) How many moles of Al atoms are needed to combine with 1.58 mol of O atoms to make aluminum oxide, Al2O3? 3) How many moles of Al are in 2.16 mol of Al2O3? Answers: 1) 2.59x103mol Na atoms 2) 1.05mol Al 3) 4.32mol Al Write the equation that expresses in acceptable chemical shorthand the following statement: can be made to react with molecular oxygen (O2) “Iron to give iron oxide with the formula Fe2O3” 5. Balance the following reactions: a. Ca(OH)2 + HCl CaCl2 + H2O  b. AgNO3 + CaCl2 Ca(NO3)2 +AgCl  c. + C Fe + CO3  d. NaHCO3 + H2SO4 Na2SO4 + H2O + CO2  e. C4H10 + O2 CO2 +H2O  f. Mg(OH)2 + HBr MgBr2 + H2O  g. + H2SO4 Al2(SO4)3 + H2O  h. + H3PO4 K2HPO4 + H2O + CO2  i. C9H10O + O2 CO2 + H2O  Answers: 4. 4Fe + 3O2 2Fe2O3  5. a. Ca(OH)2 + 2HCl + 2H2O  b. 2AgNO3 + CaCl2 Ca(NO3)2 + 2AgCl 
Convert the following to Celsius 16) 100o K ________ 17) 200o K ________ 18) 273o K ________ 19) 350o K ________ Concept of mole/molar ratio 1) How many moles of sodium atoms correspond to 1.56x1021 atoms of sodium? 2) How many moles of Al atoms are needed to combine with 1.58 mol of O atoms to make aluminum oxide, Al2O3? 3) How many moles of Al are in 2.16 mol of Al2O3? Answers: 1) 2.59x103mol Na atoms 2) 1.05mol Al 3) 4.32mol Al Write the equation that expresses in acceptable chemical shorthand the following statement: “Iron can be made to react with molecular oxygen (O2) to give iron oxide with the formula Fe2O3” 5. Balance the following reactions: a. Ca(OH)2 + HCl  CaCl2 + H2O b. AgNO3 + CaCl2  Ca(NO3)2 +AgCl c. + C  Fe + CO3 d. NaHCO3 + H2SO4  Na2SO4 + H2O + CO2 e. C4H10 + O2  CO2 +H2O f. Mg(OH)2 + HBr  MgBr2 + H2O g. + H2SO4  Al2(SO4)3 + H2O h. + H3PO4  K2HPO4 + H2O + CO2 i. C9H10O + O2  CO2 + H2O Answers: 4. 4Fe + 3O2  2Fe2O3 5. a. Ca(OH)2 + 2HCl  + 2H2O b. 2AgNO3 + CaCl2  Ca(NO3)2 + 2AgCl
Chemistry%20EOC%20review_0.docx