# Chemical Engineering - Stoichiometry

### Exercise :: Stoichiometry - Section 1

16.

Assuming that CO2 obeys perfect gas law, calculate the density of CO2 (in kg/m3) at 263°C and 2 atm.

 A. 1 B. 2 C. 3 D. 4

Explanation:

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17.

One micron is equal to

 A. 10-4 mm B. 10-4 cm C. 10-6 m D. both(b)&(c)

Explanation:

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18.

Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is

 A. 10.73 kJ B. 16.15 kJ C. 18.11 kJ D. 18.33 kJ

Explanation:

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19.

Gases diffuse faster compared to liquids because of the reason that the liquid molecules

 A. are held together by stronger inter-molecular forces. B. move faster. C. have no definite shape. D. are heavier

Explanation:

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20.

Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is

 A. 1/9 B. 8/9 C. 1/2 D. 5/9