What are some uses of the mineral gypsum? select 2 choices

Explanation:

There are three uses of gypsum in your list.  

1. Fertilizer

Gypsum is a source of the essential plant nutrients, Ca and S. It has been used as a fertilizer for more than 250 yr.

2. Wallboard

Much of the gypsum produced by flue gas desulfurization is used in the wallboard industry.

3. Plaster of Paris

Plaster of Paris is produced by heating gypsum to about 150 °C.  

CaSO₄·2H2O ⟶ CaSO₄·0.5H₂O + 1.5H₂O

When the dry powder is mixed with water, it re-forms into gypsum.

So, three uses of gypsum are in .

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