Stoichiometry
Moles of O2 formed from 1.65 moles of KClO3
Chemical equation: 2KClO3 --> 2 KCl + 3 O2
What are 2.48 moles?
Formula for bond energy
What is energy of bonds broken - energy of bonds formed?
Potassium bromide is ____ (soluble/insoluble) in water.
What is soluble?
Formula for percent yield
What is 100 * Actual yield/Theoretical yield ?
Name of CuI2.
What is Copper (II) iodide?
Moles of Fe2O3 produced when 0.275 moles of Fe are reacted.
Chemical equation: 4 Fe + 3 O2 --> 2 Fe2O3
What are 0.138 moles?
Enthalpy change for 2H2 + O2 --> 2H2O
H-H bond energy = 432 kJ/mol
O=O bond energy = 495 kJ/mol (O2 structure has a double bond)
H-O bond energy = 467 kJ/mol
What is -509 kJ?
Products of mixing KBr and BaCl2.
What are KCl and BaBr2?
Percent yield if I produced 5.94 g of water but I was supposed to produce 7.92 g
What is 75%?
Oxidizing agent and reducing agent in the reaction Cl2 + 2NaBr --> 2 NaCl + Br2
What is Cl2 as oxidizing agent? What is Br- as reducing agent?
Chemical equation: 2KClO3 --> 2 KCl + 3 O2
What are 1.47 g of O2?
Enthalpy change for H2 + F2 --> 2 HF
H-H bond energy = 432 kJ/mol
H-F bond energy = 565 kJ/mol
F-F bond energy = 154 kJ/mol
What is -544 kJ?
Net ionic equation of AgNO3 (aq) + KCl (aq) --> AgCl (s) + KNO3 (aq)
What is Ag+ (aq) + Cl- (aq) --> AgCl (s)
Theoretical yield of LiCl if you start with 20 grams of LiOH.
Chemical equation: LiOH + KCl --> LiCl + KOH
What is 34.86 g of LiCl?
Chemical formula of bismuth (III) phosphite
What is BiPO3 ?
Grams of KCl formed from 2.73 grams of KClO3
Chemical equation: 2KClO3 --> 2 KCl + 3 O2
What are 1.66 g KCl?
Enthalpy change for 2H2O --> 2H2 + O2
H-H bond energy = 432 kJ/mol
O=O bond energy = 495 kJ/mol (O2 structure has a double bond)
H-O bond energy = 467 kJ/mol
What is 509 kJ?
Net ionic equation of 2 Cr(NO3)3 (aq) + 3FeSO4 (aq) --> 3 Fe(NO3)2 (aq) + Cr2(SO4)3 (aq)
What is No Reaction?
Actual yield of uranium hexabromide if I start with 100 grams of uranium and get a percent yield of 83%
Chemical equation: U + 3Br2 --> UBr6
What is 250 g of uranium hexabromide?
Percent composition by mass for each element in Na3PO4
What are 42% Na, 19% P, and 39% O?
C-O bond energy = 358 kJ/mol
H-H bond energy = 432 kJ/mol
C-H bond energy = 413 kJ/mol
O-H bond energy = 467 kJ/mol
What is -128 kJ?
Products of mixing NH4OH and AgNO3. Identify which product(s) precipitate.
What are AgOH and NH4NO3? What is AgOH?
Percent yield if I start with 89 g of sulfuric acid and produce 7.1 grams of water.
Chemical equation: H2SO4 --> H2O + SO3
What is 43.3%?
Amount of heat released when the temperature of 450.0g of a substance with a specific heat of 1.264 J/g degrees Celsius drops by 7.050 degrees Celsius
What is 4010 J of heat released?