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3 years ago

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Chemistry

1 answer:

Taya2010 [7]3 years ago

7 0

B because there is 2 gases in the air that we know of because of the text

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For IR radiation with û = 1,130 cm 1, v=__THz

Dmitry [639]

<u>Answer:</u> The frequency of the radiation is 33.9 THz

<u>Explanation:</u>

We are given:

Wave number of the radiation, $\bar{\nu}=1130cm^{-1}$

Wave number is defined as the number of wavelengths per unit length.

Mathematically,

$\bar{\nu}=\frac{1}{\lambda}$

where,

$\bar{\nu}$ = wave number = $1130cm^{-1}$

$\lambda$ = wavelength of the radiation = ?

Putting values in above equation, we get:

$1130cm^{-1}=\farc{1}{\lambda}\\\\\lambda=\frac{1}{1130cm^{-1}}=8.850\times 10^{-4}cm$

Converting this into meters, we use the conversion factor:

1 m = 100 cm

So, $8.850\times 10^{-4}cm=8.850\times 10^{-4}\times 10^{-2}=8.850\times 10^{-6}m$

The relation between frequency and wavelength is given as:

$\nu=\frac{c}{\lambda}$

where,

c = the speed of light = $3\times 10^8m/s$

$\nu$ = frequency of the radiation = ?

Putting values in above equation, we get:

$\nu=\frac{3\times 10^8m/s}{8.850\times 10^{-4}m}$

$\nu=0.339\times 10^{14}Hz$

Converting this into tera Hertz, we use the conversion factor:

$1THz=1\times 10^{12}Hz$

So, $0.339\times 10^{14}Hz\times \frac{1THz}{1\times 10^{12}Hz}=33.9THz$

Hence, the frequency of the radiation is 33.9 THz

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2. Which organelle holds genetic information in the molecule DNA? A. vacuole B. cell membrane C. chromosome D. Golgi body

malfutka [58]

B.cell membrane is the answer

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4 years ago

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Q pasa si añades acido clorhídrico con tizas (cal y mármol) ????

wariber [46]

Answer:

Cuando se agrega ácido clorhídrico diluido a piezas de mármol que son carbonato de calcio, se forma cloruro de calcio, agua y gas de dióxido de carbono. ... Nota - Todos los ácidos minerales descomponen el mármol que es carbonato de calcio en sales solubles y gas de dióxido de carbono.

Explanation:

que tengas un buen dia amor <3

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Which law of motion does the diagram depict

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I can’t see the picture here’s what I see

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What are the big differences between physical and chemical properties?

zysi [14]

Explanation:

a physical property happens with the body or something alive while a chemical property has more action with chemicals like H2O and carbon dioxide

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