Mass of crucible + cover
____18.500 g__________
Mass of crucible + cover + Mg
_____18.702 g___________
Mass of Mg
____0.202 g____________
Mass of crucible + cover + oxide product
_____18.842 g___________
Mass of oxide product
_____0.342 g___________
Mass of oxygen in oxide product
________________
Empirical formula of oxide product.
(Show calculations to receive
credit)
________________
What is the mass of the oxygen in the product?
And what is the empirical formula?
Also,
Write the balanced chemical equation for the reaction of
magnesium metal and oxygen gas.
Calculate the theoretical yield of the magnesium oxide in your
experiment. Show all your work to receive credit.
Calculate the percent yield. Show all work.
A student forgets to sand the magnesium metal before the
experiment. Would his percent yield be higher or lower than
expected? Explain.
A student does not add water to the mixture to remove the
magnesium nitride (Mg3N2). Would his percent
yield be higher or lower than expected? Explain.