Answer:
Option (C)
Explanation:
In the field of astronomy, the redshift is defined as the shifting of the wavelength of light towards the red color of the spectrum. It describes about how the universe is expanding in every direction. The scientists have observed that the light in the universe emitted from distant objects such as the stars and galaxies is redshifted. This provides an example of Doppler's effect that is generally defined as the change in the wavelength of a wave that occurs when an observer moves relative to the source of the wave.
Hence, the correct answer is option (C).
Answer:
The standard entropy or reaction ΔS° =+324.6J/mol.K
Explanation:
The reaction is
2H2O(l) → 2H2(g) + O2(g)
Standard Molar Entropies of Selected Substances at 298 K are
Substance S∘ (J/mol⋅K)
H2(g) 130.6
O2(g) 205.0
H2O(g) 188.8
H2O(l) 69.9
The standard entropy of reaction will be obtained from standard entropy of formation as given below
ΔH°= 2(130.6)+(205.0)-2(69.9) (Jol/mol.K)
ΔH°=261.2+205.0-139.8
ΔH°=+324.6Jol/mol.K
Answer is: B.) Yes, if work is done, this transfer process can take place.
For example, air conditioner involves a cyclic process that transfers heat from a cold reservoir to a hot reservoir, but with use of electricity.
Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.
The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.
Option B is correct.
Intensive properties are the properties which doesn't depend upon the amount of the substance.
Thus, calories per serving is the correct option which doesn't depend upon the amount of matter. Hence, it is an intensive chemical property of a box of raisins.