Sidewalk chalk is made from calcium and sulfate, which makes calcium sulfate. One of the most common chemicals connected to calcium is called “carbonate”, and together they make calcium carbonate.

Calcium (as carbonate) 500mg; chew tabs; assorted flavors. Calcium blocks absorption of tetracyclines. May affect absorption of other drugs. Absorption blocked by corticosteroids, foods such as ...

CALCIUM carbonate can exist in three polymorphic forms, which in the order of their usual stabilities are calcite, aragonite and vaterite. Calcite is the most stable and the least soluble ...

The formula mass of calcium carbonate can be calculated using the formula and values from the data book and the mass is given in the question.