Answer: Heat of the solution = mass water × specific heat water × change in temperature
mass water = 260ml (1.00g/ml ) = 260g
specific heat of water = c(water) = 4.184J/ g°C
Heat change of water = final temperature - initial temperature
= 26.5 - 21.2
= 5.3 °C
H = 260 g ( 4.184J/g°C ) (5.3°C) = 5765J
Molar heat =
= 16473J/mol
Explanation: finding molar heat requires first to look at specific heat of water and the change of water temperature
<u>Answer:</u>
<u>For A:</u> The energy of the given amount of photons for infrared radiation is
<u>For B:</u> The energy of the given amount of photons for infrared radiation is
<u>For C:</u> The energy of the given amount of photons for infrared radiation is
<u>Explanation:</u>
The relationship between energy and frequency is given by Planck's equation, which is:
......(1)
where,
h = Planck's constant =
E = energy of the light
c = speed of light =
= wavelength of light
= Avogadro's number =
n = number of moles of photons = 1.70 moles
Conversion factor used:
Wavelength of infrared radiation =
Putting values in equation 1, we get:
Hence, the energy of the given amount of photons for infrared radiation is
Wavelength of visible light =
Putting values in equation 1, we get:
Hence, the energy of the given amount of photons for infrared radiation is
Wavelength of ultraviolet radiation =
Putting values in equation 1, we get:
Hence, the energy of the given amount of photons for infrared radiation is