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4vir4ik [10]
3 years ago
12

Infrared radiation has a longer wavelength, ____ frequency, and ____ energy than visible light.

Chemistry
2 answers:
vodka [1.7K]3 years ago
5 0
Infrared radiation has a longer wavelength, HIGHER frequency and LOWER energy than visible light.
Hope this helps!!!!!!!
KATRIN_1 [288]3 years ago
4 0

<u>Answer:</u> The correct answer is lower, lower.

<u>Explanation:</u>

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

E=\frac{hc}{\lambda}       .....(1)

where,

E = energy of the light

h = Planck's constant

c = speed of light

\lambda = wavelength of light

We also know that:

\nu=\frac{c}{\lambda}     ......(2)

where,

\nu = frequency of light

From equation 1 and 2, we get that wavelength is inversely proportional to energy as well as frequency of the light. So, if the wavelength of light is high, that means energy and frequency will be low.

Hence, the correct answer is lower, lower.

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What is the solution's freezing point: 15 g of CH4N2O (Molar mass = 60.055 g/mol) in 200. g of H2O? (Kf = 1.86 (°C·kg)/mol)
AURORKA [14]

Ok to answer this question we firsst need to fin the number of mol of Urea (CH4N2O). to do this we simply :

1 mol of urea =15/60.055 = 0.25mol

therefore 200g of water contain 0.25mol

the next step is to determine the malality of our solution in 200g of water, to do this we say:

200 g = 1Kg/1000g = 0.2kg

therefor 0.25mol/0.2Kg = 1.25mol/kg

and from the equation:

we know that i = 1

we are given Kf

b is the molality that we just calculated

therefore;

the solutions freezing point is -2.325°C

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1 year ago
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Answer:

A

Explanation:

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maria [59]
The answer to this question would be: 3.125%

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Density= mass/ volume

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Hope this helps!! xx
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Read 2 more answers
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