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Silver Oxide Procedure

APCHEM-GQQIKD
Mass (g)
Empty crucible 20.80
Crucible and silver oxide 21.96
Crucible and silver products (First mass) 21.92
Crucible and silver products (Second mass) 21.88
Crucible and silver products (Third mass) 21.88

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The data table above was obtained when heating silver oxide in a crucible.

Which of the following accounts for why the silver oxide sample was heated and massed multiple times?

A

To ensure all of the silver oxide decomposed completely.

B

To ensure that all the contaminants have been burned off.

C

To ensure that the oxygen in the air adequately bonded to the silver in the crucible.

D

Massing multiple times was not necessary but added to the precision of the results.