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julsineya [31]
2 years ago
12

How many grams are in 0.787 moles of kcn

Chemistry
1 answer:
Eddi Din [679]2 years ago
4 0

Answer:

=> moles = Given mass/molar mass

=> 0.787 = Given mass/(39 + 12 + 14)

=> 0.787 = Given mass/65

=> mass = 0.787 × 65

=> <u>mass = 51.155 g</u>

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Answer: a) Frequency=666\times10^{12}Hz-789\times10^{12}Hz

b) Wavelength=380nm-450nm

Explanation: Visible light is a form of electromagnetic wave.

Wavelength is defined as the distance between two successive crests of a wave. It is represented as symbol \lambda.

Frequency is defined as the number of complete cycles happening per second. It is represented by the symbol \nu.

Wavelength and Frequency follow inverse relation,

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where, c = speed of light = 3\times10^8m/s

Wavelength and frequency of a wave is usually expressed in a range.

a)  \text{Frequency of visible light}=666\times10^{12}Hz-789\times10^{12}Hz

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3 years ago
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NemiM [27]
<span>Let x = amt of distilled water
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A simple equation
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I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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