Stoichiometric Calculations Using Chemical Equations
Chemistry ⇒ Stoichiometry and Chemical Calculations
Stoichiometric Calculations Using Chemical Equations starts at 10 and continues till grade 12.
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A reaction has the equation: 2AgNO3 + Cu → Cu(NO3)2 + 2Ag. If 0.5 moles of Cu are used, how many moles of Ag are produced?
A reaction has the equation: 2C + O2 → 2CO. If 24 g of C reacts with 32 g of O2, which is the limiting reactant? (C = 12 g/mol, O2 = 32 g/mol)
A student burns 16 g of CH4 in excess O2 (CH4 + 2O2 → CO2 + 2H2O). How many grams of CO2 are produced? (CH4 = 16 g/mol, CO2 = 44 g/mol)
A student reacts 10 g of Fe with excess S according to Fe + S → FeS. How many grams of FeS are produced? (Fe = 56 g/mol, S = 32 g/mol, FeS = 88 g/mol)
A reaction has the equation: 2AgNO3 + Cu → Cu(NO3)2 + 2Ag. If 0.5 moles of Cu are used, how many moles of Ag are produced?
A reaction has the equation: 2C + O2 → 2CO. If 24 g of C reacts with 32 g of O2, which is the limiting reactant? (C = 12 g/mol, O2 = 32 g/mol)
A student burns 16 g of CH4 in excess O2 (CH4 + 2O2 → CO2 + 2H2O). How many grams of CO2 are produced? (CH4 = 16 g/mol, CO2 = 44 g/mol)
A student reacts 10 g of Fe with excess S according to Fe + S → FeS. How many grams of FeS are produced? (Fe = 56 g/mol, S = 32 g/mol, FeS = 88 g/mol)
Which law is the basis for stoichiometric calculations? (1) Law of Conservation of Mass (2) Law of Definite Proportions (3) Law of Multiple Proportions (4) Law of Constant Energy
Which of the following best describes stoichiometry? (1) The study of the speed of chemical reactions (2) The calculation of reactants and products in chemical reactions (3) The measurement of temperature changes in reactions (4) The study of acids and bases
Which of the following is a limiting reactant? (1) The reactant that is present in the smallest amount (2) The reactant that is left over after the reaction (3) The reactant that determines the amount of product formed (4) The reactant with the largest molar mass
Which of the following is NOT a step in stoichiometric calculations? (1) Balancing the equation (2) Converting units (3) Determining the limiting reactant (4) Measuring temperature change
Fill in the blank: In the reaction 2Al + 3Cl2 → 2AlCl3, the mole ratio of Al to AlCl3 is ____:____.
Fill in the blank: In the reaction 2H2 + O2 → 2H2O, the ratio of molecules of H2 to H2O is ____:____.
Fill in the blank: In the reaction 2K + 2H2O → 2KOH + ____H2, 4 moles of K will produce ____ moles of H2.
Fill in the blank: In the reaction N2 + 3H2 → 2NH3, ____ moles of H2 are needed to produce 4 moles of NH3.
True or False: In a chemical reaction, the excess reactant is completely consumed.
True or False: The coefficients in a balanced chemical equation represent the relative number of moles of each substance involved.
True or False: The coefficients in a chemical equation can be used to determine the mass of reactants and products directly.
True or False: The mass of reactants is always equal to the mass of products in a chemical reaction.
