# Chemical Engineering - Stoichiometry

### Exercise :: Stoichiometry - Section 1

36.

A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is

 A. 2 B. 1 C. 0.5 D. 0.5

Answer: Option C

Explanation:

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37.

Average molecular weight of air is about

 A. 21 B. 29 C. 23 D. 79

Answer: Option B

Explanation:

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38.

6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be __________ gm.

 A. 0.5 B. 1 C. 3 D. 5

Answer: Option A

Explanation:

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39.

Pick out the wrong unit conversion of calorific value.

 A. 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg. B. 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3. C. 1 BTU/lb = 2.3 kcal/kg. D. 1 kcal/m3 = 0.1124 BTU/ft3.

Answer: Option C

Explanation:

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40.

Increasing the temperature of an aqueous solution will cause decrease in its

 A. molality B. mole fraction C. weight percent D. molarity

Answer: Option D

Explanation:

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