Answer:
(A) 800 K (B) 2.4 KW
Explanation:
We have given the COP =1.6
The sink temperature 
We have to find the source temperature, that is 
(A) We know that COP of the heat pump is given by 
So 
(B) We have given the work done =1.5 KW
The rate of heat transfer is given by 
Answer:
The boiling point elevation is 3.53 °C
Explanation:
∆Tb = Kb × m
∆Tb is the boiling point elevation of the solution
Kb is the molal boiling point elevation constant of CCl4 = 5.03 °C/m
m is the molality of the solution is given by moles of solute (C9H8O) divided by mass of solvent (CCl4) in kilogram
Moles of solute = mass/MW =
mass = 92.7 mg = 92.7/1000 = 0.0927 g
MW = 132 g/mol
Moles of solute = 0.0927/132 = 7.02×10^-4 mol
Mass of solvent = 1 g = 1/1000 = 0.001 kg
m = 7.02×10^-4 mol ÷ 0.001 kg = 0.702 mol/kg
∆Tb = 5.03 × 0.702 = 3.53 °C (to 2 decimal places)
b
the color of lines
Explanation:
on the atomic spectrum for an atom
