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Gypsum is a mineral that is used in the construction industry to make drywall (sheetrock). The chemical formula for this hydrated compound is CaS04 • 2H20. A hydrated compound contains water molecules within its crystalline structure. Gypsum contains 2 moles of water for each 1 mole of calcium sulfate.
What is the gram formula mass of CaSO4 • 2H2O?

Respuesta :

joseaaronlara

Answer:

The answer to your question is 172 g/mol

Explanation:

Data

                             CaSO₄ 2H₂O

Gram formula mass = ?

Process

1.- Determine the number of elements in the compound

    Calcium        1

    Sulfur            1

    Hydrogen          4

    Oxygen              6

2.- Multiply the number of atoms by their atomic weight

    Calcium        1  x 40 = 40

    Sulfur            1 x 32 = 32

    Hydrogen          4 x 1 = 4

    Oxygen              6 x 16 = 96

3.- Add the result

    Gram formula mass = 40 + 32 + 4 + 96

                                      = 172 g/mol

The gram formula mass of CaSO₄.2H₂O  is 172 g/mol

Given:

The chemical formula of gypsum CaSO₄.2H₂O

To find:

Gram formula mass = ?

Gram formula mass:

It is the amount of that compound that has the same mass in grams as the formula mass in atomic mass unit.

Firstly we need to determine the number of elements in the compound.

  • Calcium -1
  • Sulfur- 1
  • Hydrogen- 4
  • Oxygen-6

Then, multiply the number of atoms by their atomic weight.

  • Calcium- 1 * 40 = 40
  • Sulfur-1 * 32 = 32
  • Hydrogen -4 * 1 = 4
  • Oxygen-6 * 16 = 96

Finally, on addition we will get

Gram formula mass = 40 + 32 + 4 + 96= 172 g/mol

Learn more:

brainly.com/question/338808

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