PERFORMANCE
OBJECTIVES / Chem. B1A - Dr. Daniel
Chapter 3
At the
end of this unit you should be able to:
1. Define the mole in terms of both mass
and of numbers of chemical units (atoms, molecules or formula units).
2. Given two of the following (the mass,
the number of particles, or number of moles of an element or compound),
calculate the third number.
3. Given the symbol of an element or the
formula of a compound and a periodic table, determine the molar mass.
4. Determine
the empirical formula of a compound from the relative elemental masses or from
the percent by weight of elements present.
If you are also given the molar mass, determine the molecular formula.
5. Determine
the empirical formula given chemical reaction data (such as in a combustion
reaction).
If you are also given the molar mass, be able to determine the molecular
formula.
6. Given a chemical equation with
reactants and products, balance the equation so the number of atoms on both sides
is balanced, (without changing the chemical identity of the reactants and
products).
7. Given a chemical equation and the
quantity (mass or number of moles) of a reactant or product, determine the
quantity (moles or mass) of any other substance needed or produced.
8. Determine if a reactant is limiting and
what the theoretical yield would be. In
a reaction with a limiting reactant, determine the theoretical yield of
products and how much of the excess reactants are left over.
9. Define
theoretical yield. What are the
assumptions made when calculating a theoretical yield.
10. Given quantities of reactants and an
actual yield, calculate a percentage yield.
If given a percentage yield, calculate the actual yield.
11. Given a percentage yield, calculate the
quantity of reactants needed to make a given quantity of product.