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A mixture of oxygen and krypton gases, in a 6

Chemistry

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A mixture of oxygen and krypton gases, in a 6.19 L flask at 19 °C, contains 1.92 grams of oxygen and 17.9 grams of krypton. The partial pressure of krypton in the flask is  atm and the total pressure in the flask is  atm

 

A mixture of hydrogen and nitrogen gases is maintained in a 7.04 L flask at a pressure of 3.37 atm and a temperature of 82 °C. If the gas mixture contains 0.724 grams of hydrogen, the number of grams of nitrogen in the mixture is  g

 

 

The following information is given for n-pentane, C₅H₁₂, at 1atm:

 

boiling point = 36.2 °CH_vap(36.2 °C) = 25.8 kJ/molspecific heat liquid = 2.28 J/g°C

 

At a pressure of 1 atm, what is H in kJ for the process of condensing a 36.7 g sample of gaseous n-pentane at its normal boiling point of 36.2 °C.

 

 kJ

 

 

 

The following information is given for n-pentane, C₅H₁₂, at 1atm:

 

boiling point = 36.2 °CH_vap(36.2 °C) = 25.8 kJ/molspecific heat liquid = 2.28 J/g°C

 

At a pressure of 1 atm,  kJ of heat are needed to vaporize a 28.5 g sample of liquid n-pentane at its normal boiling point of 36.2 °C.

 

 

 

The following information is given for mercury at 1atm:

 

boiling point = 357 °C

H_vap(357 °C) = 59.3 kJ/mol

melting point = -39 °C

H_fus(-39 °C) = 2.33 kJ/mol

specific heat solid= 0.141 J/g°Cs

specific heat liquid = 0.139 J/g°C

 

What is H in kJ for the process of freezing a 31.3 g sample of liquid mercury at its normal melting point of -39 °C.

 

 kJ

 

 

The following information is given for silicon at 1atm:

 

boiling point = 2355 °C

H_vap(2355 °C) = 297 kJ/mol

melting point = 1410 °C

H_fus(1410 °C) = 46.4 kJ/mol

specific heat solid= 0.711 J/g°Cs

pecific heat liquid = 0.908 J/g°C

 

 kJ are required to melt a 39.3 g sample of solid silicon, Si, at its normal melting point.