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Chemical Formulae

Formula unit ...

Question

Formula unit mass of magnesium chloride is :

A

94

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B

95

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C

96

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D

24

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Solution

The correct option is B 95
Formula unit mass of magnesium chloride ( $M g C l_{2}$ ) is $24 + 35.5 + 35.5 = 95$

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Similar questions

Q. What is the formula unit mass of sodium chloride?

Q. (a) Define 'formula unit' of an ionic compound. What is the formula unit of (i) sodium chloride, and (ii) magnesium chloride ?
(b) Calculate he formula masses of the following compounds :
(i) Calcium chloride
(ii) Sodium carbonate
(Given : Atomic masses : Ca = 40 u ; Cl = 35.5 u ; Na = 23 u ; C = 12 u ; O = 16 u)

Q. Assertion :Formula mass (in grams)of magnesium chloride has

12.044 \times 10^{23}

magnesium ions.
Reason: One formula mass of an ionic compound has

6.022 \times 10^{23}

ions of each type.

Q. The molecular formula of magnesium chloride is:

Which of the following is the correct formula of magnesium chloride?

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