B,c and f are true,but I doubt about g cause I don't know anything about electron's dimention
Answer:
B the rides are to the sun
Answer : The correct option is, (b) +115 J/mol.K
Explanation :
Formula used :

where,
= change in entropy
= change in enthalpy of vaporization = 40.5 kJ/mol
= boiling point temperature = 352 K
Now put all the given values in the above formula, we get:



Therefore, the standard entropy of vaporization of ethanol at its boiling point is +115 J/mol.K
Wave speed = frequency x wavelength
= 50 x 0.1
= 5 m/s
Hope this helps!
True. light is particles. photons, however are waves.