1. The crucible is not fired, as the procedure suggests. The mass of the dirty crucible…

1.
The crucible is not fired, as the procedure suggests. The mass
of the dirty crucible is recorded. However, the impurities are
burned off in the experiment. Will the reported mass of the final
product be too high, too low, or unchanged as a result of this
technique error?

Too high

Too low

Unaffected

2.
If you put more water than is needed for reaction 3, and then
did not dry out this excess water, what effect (if any) would this
have on the calculated ratio of oxygen?

Too high

Too low

Unaffected

3.
A student forgot to polish the magnesium metal. Will the
reported mole ratio of magnesium to oxygen be too high or too low
as a result of this error?

Too high

Too low

Unaffected

4.
If a significant amount of the dense white smoke escaped from
the crucible during the burning, what effect (if any) would this
have on the calculated ratio of magnesium?

Too high

Too low

Unaffected

5.
Based on your knowledge of nomenclature, what is the empirical
formula of magnesium oxide?

Mg2O

MgO

MgO2

Mg2O2

6.
In a hurry to complete the assignment, a student did not allow
all of the magnesium to react. Will the reported magnesium to
oxygen ratio be reported as too high or too low?

Unaffected

Too low

Too high

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