Answer:
2 eV
Explanation:
The energy of a photon of light is given by the formula
where
h is the Planck constant
c is the speed of light
is the wavelength of the photon
In this problem we have:
is the wavelength of the photon
Therefore, the energy in Joules is
We want to convert this energy into electronvolts: we know that the conversion factor is
Therefore,
They vibrate back and forth
When 67 g of water is heated from its melting point to its boiling point, it takes 28006 J of heat.
<h2>Relationship between heat production and temperature change</h2>
- A way to numerically relate the quantity of thermal energy acquired (or lost) by a sample of any substance to that sample's mass and the temperature change that results from that is provided by specific heat capacity.
The following formula is frequently used to describe the connection between these four values.
q = msΔT
where, q = the amount of heat emitted or absorbed by the thing
m = the object's mass = 67 gm
s = a specific heat capacity of the substance = 4.18 J/gC
ΔT = the resultant change in the object's temperature = 373.15 -273.15K= 100 k
q = 67 * 4.18 * 100 J
⇒q = 28006 J
Therefore it is concluded that 67 g of water takes 28006 J of heat from its melting point to reach its boiling point.
Learn more about thermal energy here:
brainly.com/question/3022807
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