Respuesta :
Answer:
Gypsum
Explanation:
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO. 2H2O. It's used in many forms of plaster, blackboard/sidewalk chalk, and drywall :)
Answer:
Gypsum
Explanation:
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO. 2H2O. It's used in many forms of plaster, blackboard/sidewalk chalk, and drywall :)