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Vera_Pavlovna [14]
2 years ago
11

A microwave oven uses electromagnetic radiation to heat water molecules in food or drink. This radiation has a frequency of 2.45

x 10⁹ Hz. Calculate its energy
Chemistry
1 answer:
fredd [130]2 years ago
5 0

Answer:

1.62 × 10⁻²⁴ J

Explanation:

Step 1: Given and required data

  • Frequency of this radiation (ν): 2.45 × 10⁹ Hz (2.45 × 10⁹ s⁻¹)
  • Planck's constant (h): 6.63 × 10⁻³⁴ J.s

Step 2: Calculate the energy (E) of this electromagnetic radiation

We will use the Planck-Einstein's relation.

E = h × ν

E = 6.63 × 10⁻³⁴ J.s × 2.45 × 10⁹ s⁻¹ = 1.62 × 10⁻²⁴ J

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This plateau is where a phase change occurs. Likely, this cooling curve observes the changing of a liquid into a solid (so that the temperature is quantifiable). As something cools, it’s losing energy to the surroundings; when a phase change occurs, like liquid to solid, energy isn’t lost directly from the atom, but instead the energy maintained by free motion of the atom is used. This lack of motion reduces it into a lattice (all while maintaining a constant internal energy), finalizing the phase change, after which energy is lost directly from the atom again.
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3 years ago
Decide which element probably has a boiling point most and least similar to the boiling point of potassium.
larisa86 [58]

Explanation:

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What would happen if the earths orbit was longer or shoter?
PolarNik [594]

Answer:

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Explanation:

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6 0
2 years ago
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ArbitrLikvidat [17]

Answer:

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3 0
3 years ago
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It takes 338. kJ/mom to break a carbon-chlorine single bond. Calculate the maximum wavelength of light for which a carbon-chlori
Vesnalui [34]

Answer: The maximum wavelength of light for which a carbon-chlorine Single bond could be broken by absorbing a single photon is 354 nm

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

E=\frac{Nhc}{\lambda}

where,

E = energy of the light  = 338kJ=338000J    (1kJ=1000J)

N= avogadro's number

h = Planck's constant

c = speed of light

\lambda = wavelength of light

338\times 1000J=\frac{6.023\times 10^{23}\times 6.6\times 10^{-34}\times 3\times 10^{8}}{\lambda}    

{\lambda}=0.354\times 10^{-6}m=354nm     (1nm=10^{-9}m

Thus the maximum wavelength is 354 nm

6 0
3 years ago
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