Chemistry Engineering Question:

Which of the following are NOT carbonate minerals:

1. calcite
2. magnesite
3. dolomite
4. graphite

Answer: D

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Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from:	Under which of the following conditions will iron rust: