Jeopardy Molar Mass Avogadro’s Number Stoichiometry Limiting Reactant Emp/Molec Formula Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Jeopardy

$100 Question from H1 Determine the molar mass of sodium chloride.

$100 Answer from H g/mol

$200 Question from H1 Determine the molar mass of sulfuric acid.

$200 Answer from H g/mol

$300 Question from H1 Determine the molar mass of barium nitrate.

$300 Answer from H g/mol

$400 Question from H1 Determine the molar mass of ammonium sulfate.

$400 Answer from H g/mol

$500 Question from H1 Determine the molar mass of calcium acetate.

$500 Answer from H g/mol

$100 Question from H2 How many moles of silver is equal to 2.57 x atoms of silver?

$100 Answer from H x mol Ag

$200 Question from H2 How many moles of potassium ions equals x potassium ions?

$200 Answer from H x mol K

$300 Question from H2 How many molecules of dihydrogen monoxide is equal to moles of dihydrogen monoxide?

$300 Answer from H x molecules H 2 O

$400 Question from H2 How many moles of sulfuric acid do you have if you there are 1.64 x molecules of sulfuric acid?

$400 Answer from H x mol H 2 SO 4

$500 Question from H2 If there are 8.24 x molecules of sodium chloride in a salt shaker, what is the mass of the salt?

$500 Answer from H g NaCl

$100 Question from H3 Calculate the mass of moles of calcium bromide.

$100 Answer from H g calcium bromide

$200 Question from H3 Calculate the moles of 35.7 milligrams of strontium nitrate.

$200 Answer from H x mol strontium nitrate

$300 Question from H3 Potassium and chlorine react to produce potassium chloride. Write the balanced reaction and determine how many grams of KCl is produced from 2.50 g of K and excess Cl 2.

$300 Answer from H3 2 K + Cl 2 ---> 2 KCl 4.77 g KCl

$400 Question from H3 Sodium oxide and dihydrogen monoxide react together to produce sodium hydroxide. Write the balanced reaction and determine how many grams of Na 2 O are required to produce 1.60 x 10 2 grams of NaOH.

$400 Answer from H3 Na 2 O + H 2 O ---> 2 NaOH 124 g Na 2 O

$500 Question from H3 Potassium chlorate decomposes into potassium chloride and oxygen. Write the balanced reaction and determine how many moles of O 2 can be produced from moles of KClO 3.

$500 Answer from H3 2 KClO 3 ---> 2 KCl + 3 O mol O 2

$100 Question from H4 If you start with 14.8 g of C 3 H 8 and 3.44 g of O 2, determine the limiting reagent. C 3 H O > 3 CO H 2 O

$100 Answer from H4 Limiting Reactant = O 2

$200 Question from H4 If 10.0 g of Al 2 (SO 3 ) 3 is reacted with 10.0 g of NaOH, determine the number of moles of Al(OH) 3 produced. Al 2 (SO 3 ) NaOH > 3 Na 2 SO Al(OH) 3

$200 Answer from H mol Al(OH) 3

$300 Question from H4 If 25.4 g of Al 2 O 3 is reacted with 10.2 g of Fe, determine the number of grams of Fe 3 O 4 produced 4 Al 2 O Fe > 3 Fe 3 O Al

$300 Answer from H g Fe 3 O 4

$400 Question from H4 Which element is in excess when 3.00 grams of Mg is ignited in 2.20 grams of pure oxygen? 2Mg + O > 2MgO

$400 Answer from H4 Excess Reactant: O 2

$500 Question from H4 What mass of ZnO is formed when 20.0 grams of MoO 3 is reacted with 10.0 grams of Zn? 3 Zn(s) + 2 MoO 3 (s) > Mo 2 O 3 (s) + 3 ZnO(s)

$500 Answer from H g of ZnO will be produced

$100 Question from H5 A compound with an empirical formula of C 2 OH 4 and a molar mass of 88 grams per mole. Write the molecular formula.

$100 Answer from H5 C4O2H8C4O2H8

$200 Question from H5 When 5.00 g of FeCl 3 · xH 2 O are heated, 2.00 g of H 2 O are driven off. Find the chemical formula and the name of the hydrate.

$200 Answer from H5 chemical formula: FeCl 3 · 6H 2 O name: iron (III) chloride hexahydrate

$300 Question from H5 Calculate the mass percent composition of carbon, nitrogen and oxygen in acetamide, C 2 H 5 NO.

$300 Answer from H5 C: 40.67% H: 8.53% N: 23.71% O: 27.09%

$400 Question from H5 The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and 53.4% O. Determine the empirical formula of acetic acid.

$400 Answer from H5 CH 2 O

$500 Question from H5 A component of protein called serine has an approximate molar mass of 100 g/mole. If the percent composition is as follows, what is the empirical and molecular formula of serine? C = % H= % O = % N= %

$500 Answer from H5 empirical formula: C 3 H 7 NO 3 molecular formula: C 3 H 7 NO 3

Final Jeopardy This scientist developed a number that: Indicates the number of atoms in 12 grams of carbon-12 Is 6.02 x particles in 1 mole (Spelling MUST be correct!)

Final Jeopardy Answer Avogadro