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Mass Transfer Mcqs

Q:

A binary mixture of oxygen and nitrogen with partial pressures in the ratio 0.21 and 0.79 is contained in a vessel at 300 K. If the total pressure of the mixture is 1 * 10 ? N/m², find mass fraction of oxygen

A) 0.133 B) 0.233
C) 0.333 D) 0.433
 
Answer & Explanation Answer: B) 0.233

Explanation: 0.269/1.156 = 0.233.

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135
Q:

A binary mixture of oxygen and nitrogen with partial pressures in the ratio 0.21 and 0.79 is contained in a vessel at 300 K. If the total pressure of the mixture is 1 * 10 ? N/m², find molar fraction of nitrogen

A) 0.79 B) 0.21
C) 0.23 D) 0.13
 
Answer & Explanation Answer: A) 0.79

Explanation: Molar fraction is equal to the partial pressure.

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303
Q:

A binary mixture of oxygen and nitrogen with partial pressures in the ratio 0.21 and 0.79 is contained in a vessel at 300 K. If the total pressure of the mixture is 1 * 10 ? N/m², find overall mass density

A) 4.156 kg/m³ B) 3.156 kg/m³
C) 2.156 kg/m³ D) 1.156 kg/m³
 
Answer & Explanation Answer: D) 1.156 kg/m³

Explanation: For oxygen = 0.269 kg/m³ and for nitrogen = 0.887 kg/m³.

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389
Q:

The ratio of number of moles of species A to the total number of moles of the mixture is known as

A) Mole fraction B) Mass fraction
C) Partial pressure D) Mass density
 
Answer & Explanation Answer: A) Mole fraction

Explanation: Not available for this question

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116
Q:

The ratio of a mass concentration of species A to the total mass density of the mixture is known as

A) Mass density B) Concentration
C) Mole fraction D) Mass fraction
 
Answer & Explanation Answer: D) Mass fraction

Explanation: Not available for this question

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