Properties of Air

Question 1

Cp of air = ____ Btu/lb-°F

Answer 1

0.24 Btu/lb-°F

Question 2

Cp of air = ____ kcal/kg-°C

Answer 2

0.24 kcal/kg-°C

Question 3

Cp of air = ____ kJ/kg-°C

Answer 3

1.0 kJ/kg-°C

Question 4

Cv of air = ____ kcal/kg-°C

Answer 4

0.171 kcal/kg-°C

Question 5

Cv of air = ____ kJ/kg-°C

Answer 5

0.716 kJ/kg-°C

Question 6

Cv of air = ____ Btu/lb-°F

Answer 6

0.171 Btu/lb-°F

Question 7

Air gas constant R = ____ kJ/kg-K

Answer 7

0.287 kJ/kg-K

Question 8

Air gas constant R = ____ ft-lb/lb-R

Answer 8

53.3 ft-lb/lb-R

Question 9

specific heat ratio for air k =

Answer 9

1.4

Question 10

Ideal gas gas constant, R in kJ/kg-K

Answer 10

8.3143/M
-M = molecular weight

Question 11

Ideal gas gas constant, R in ft-lb/lb-R

Answer 11

1545/M

Question 12

Air molecular weight, M

Answer 12

28.97 kg air/mole of air