Chapter 6
What is Avogadro's number?
what is 6.022 x 1023
What is an aqueous solution?
What is a homogeneous mixture in which a substance (Solute) is dissolved in water (Solvent)?
What is a precipitation reaction?
What is a reaction that forms a solid(s) upon mixing two aqueous solutions?
What is Exothermic?
What is energy released into the surroundings, creating a negative enthalpy in a reaction
What is Endothermic?
When energy is absorbed from the surroundings, creating a positive enthalpy in a reaction
How many atoms of Na (Sodium) are in 0.012 moles?
What is 7.23 x 1021 atoms of Na
Are these compounds Soluble or Insoluble?
Fe(OH)₃→
K₃PO₄→
what is
Fe(OH)₃→ Insoluble
K₃PO₄→ Soluble
__Al + __O2→ __Al2O3
If given 5.93 mol of Al₂O₃, how many mol of Oxygen can be produced?
What is 8.90 moles of Oxygen
How many grams are in 0.750 moles of Sulfuric Acid (H2SO4)?
What is 73.6 grams of H2SO4?
Balance the Chemical Equation:
__ KF(aq) + __ Mg(NO₃)₂ (aq) →
what is
2KF(aq) + Mg(NO₃)₂ (aq) → 2KNO₃(aq) + MgF₂(s)
Given: HCL (aq) + NaOH(aq) → NaCl (aq) + H₂O (l) and ΔHrxn = - 57.2 kJ/ mol, How much heat is released when 6.87 g NaOH reacts?
What is -9.82 kJ
What is the mass percent of Oxygen in NaHCO3 (Baking soda)?
What is 57.13% Oxygen
What is the Net Ionic Equation?
what is
2F⁻(aq) + Mg²⁺(aq) → MgF₂(s)
Given: 6CO₂ (g) + 6H₂O (l) → C₆H₁₂O₆(s) + 6O₂ (g) and ΔHrxn = + 2802 kJ/ mol, How much heat is absorbed when 87.432 g of CO₂ reacts?
What is 927.8 kJ
A compound is analyzed and found to have an elemental composition of 52.92% of Aluminum and 47.08% of Oxygen. What is the empirical formula of this compound?
What is Al2O3?
A compound is analyzed and found to have an elemental composition of 87.42% Nitrogen and 12.58% Hydrogen. What is the empirical formula of this compound?
What is NH2
What is the Ionic Equations for
2AgNO₃ (aq) +MgI₂(aq) → 2 AgI (s) + Mg(NO₃)₂ (aq)
what is
2Ag+ (aq) + 2NO₃- (aq) + Mg+2 (aq) + 2I- (aq) → 2AgI (s) + Mg2+ (aq) + 2NO₃- (aq)
CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (g)
A chemist mixes 24.0g of CH₄ with 80.0g of O₂. The reactant produces an actual experimental yield of 46.2 g of CO₂. Determine the limiting reactant, theoretical yield, and the percent yield of CO₂
what is
Limiting Reactant = O2
Theoretical Yield = 55.0 g
Percent Yield = 84.0%
2Mg(s) + O₂ (g) → 2MgO(s)
If 42.0g of Mg is placed into a solution containing 35.0g of O₂, it isolates an actual yield of 61.2g of MgO. Determine the limiting reactant, theoretical yield, and the percent yield of MgO.
What is
limiting reactant = Mg
Theoretical yield = 69.6 g MgO
Percent yield = 87.93%