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Rudik [331]
3 years ago
5

NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a

microwave signal to the Space Shuttle using radio waves with a frequency of 18GHz . Calculate the wavelength of these radio waves.
Chemistry
1 answer:
Margarita [4]3 years ago
4 0

Answer:

λ = 0.0167 m = 16.7 mm

Explanation:

The wavelength of these radio waves can be found out by using the formula for the speed of radio waves:

v = fλ

where,

v = speed of radio waves = speed of light = 3 x 10⁸ m/s

f = frequency of radio waves = 18 GHz = 18 x 10⁹ Hz

λ = Wavelength = ?

Therefore,

3 x 10⁸ m/s = (18 x 10⁹ Hz)λ

λ = (3 x 10⁸ m/s)/(18 x 10⁹ Hz)

<u>λ = 0.0167 m = 16.7 mm</u>

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a balloon has a volume of 1.2 liters inside a room where the temperature is 25°C.What is the volume of this balloon when it is t
sashaice [31]

Answer:

1.04 L

Explanation:

Charles law states that for a fixed mass of gas, volume of gas is directly proportional to the absolute temperature at constant pressure.

\frac{V1}{T1} = \frac{V2}{T2}

where V1 is the volume and T1 is absolute temperature at first instance

and V2 is volume and T2 is absolute temperature at the second instance

Absolute temperature is temperature in the kelvin scale

T1 - 25 °C + 273 = 298 K

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substituting the values in the equation

\frac{1.2 L}{298K} = \frac{V2}{258K}

V2 = 1.04 L

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3 0
4 years ago
How many moles are equal to 4.15x10^23 molecules of carbon monoxide?
Rudiy27
To be able to determine the number of moles that a certain number of molecules comprises, we simply divide the number of molecules by the Avogadro's number which is equal to 6.022 x 10^23. 

   n = M/A

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   n = (4.15 x 10^23 molecules)/(6.022 x 10^23 molecules/mol)

Simplifying,
  
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<em>Answer: 0.689 moles</em>

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5 0
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The mole fraction of NaCl in an aqueous solution is 0.132. How many moles of water are present in 1 mole of this solution?
SOVA2 [1]
You could look at it this way.
1 mole of solution = 0.132 of NaCl + x
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answer: 0.868 <<<< answer


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The amount of density in the liquids
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