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What is the c...

Question

What is the chemical formula of Gypsum?

{C a S O}_{4}

.

{5 H}_{2} O

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{C a S O}_{4}

.

{7 H}_{2} O

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{C a S O}_{4}

.

{2 H}_{2} O

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{C a S O}_{4}

.

{9 H}_{2} O

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Solution

The correct option is C ${C a S O}_{4}$ $.$ ${2 H}_{2} O$
The chemical formula of Gypsum is ${C a S O}_{4}$ $.$ ${2 H}_{2} O$ . It contains two moles of water in it. It can also be said as Calcium Sulphate dihydrate.

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393 K

$C a S O_{4} .2 H_{2} O Δ 120^{\circ} C - ----- \to A - - + 3 H_{2} O . A$ is

C a S O_{4}

1.032

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C a S O_{4}

C a S O_{4}

C a = 40

S = 32

Find the number of moles of $C a S O_{4} .2 H_{2} O$ present in $3.011 \times 10^{24}$ formula units of $C a S O_{4} .2 H_{2} O$

C a S O_{4}

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