Calculate the relative formula masses for calcium chloride, $C a C l_{2}$ .

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Solution

Atomic mass of calcium $= 40$
Atomic mass of chlorine $(2) = 35.5 \times 2 = 71$ .
Formula unit mass of $C a C l_{2} = 40 + 71 = 111 g$ .

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Q. Ca+Cl2 gives CaCl2. Calculate the mass of chlorine left unreacted when 80g of calcium reacts with 150g of chlorine to form 222g of calcium chloride.

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What mass of calcium chloride is formed? [Relative molecular mass of calcium chloride is 111].

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or Calcium Chloride?

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Calculate the relative formula masses for calcium chloride, CaCl2.

Atomic mass of calcium =40Atomic mass of chlorine(2)=35.5×2=71.Formula unit mass of CaCl2=40+71=111g.

Calculate the relative formula masses for calcium chloride, $C a C l_{2}$ .

Atomic mass of calcium $= 40$
Atomic mass of chlorine $(2) = 35.5 \times 2 = 71$ .
Formula unit mass of $C a C l_{2} = 40 + 71 = 111 g$ .