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MArishka [77]
3 years ago
9

GIVING 21 POINTS AWAY PLEASE HELP ME WITH BOTH QUESTIONS ASAP!!!!

Chemistry
1 answer:
skelet666 [1.2K]3 years ago
5 0

I think question 1 is B
And question 2 is also B
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Compared to infrared radiation, an electromagnetic wave that has a lower frequency will also have a ________.
IgorLugansk [536]

Answer:

  • <u><em>B. longer wavelength and equal speed </em></u>

Explanation:

One important feature fo <em>electromagnetic radiation</em> is that all have the same speed in vacuum, <em>c</em><em>,</em> in vacuum, which is the speed of light.

Since, the speed, wavelength and frequency of the waves are related you can infere any of them when the other two are known.

The equation is:

  • speed = frequency × wavelength
  •     s     =          ν        ×      λ
  •     c     =          ν        ×      λ      . . . for the specific case of electromagnetic radiation

That inverse relation between frequency and wavelength, where the speed is the constant, shows that the lower the frequency the longer the wavelength.

In conclusion, the correct statment is that an <em>an electromagnetic wave that has a lower frequency will also have a longer wavelength and equal speed (option B).</em>

8 0
3 years ago
Read 2 more answers
Why does a solid have an definite shape?
Leno4ka [110]
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4 0
4 years ago
Please help super emergency!!
atroni [7]
1) we can calculate the molecular weight of H₃PO₄
atomic mass  (H)=1 amu
atomic mass (P)=31 amu
atomic mass (O)=16 amu 

molecular weight (H₃PO₄)=3(1)+31+4(16)=98 amu.

1 mol (H₃PO₄)=98 g
1 mol= 6.022 * 10²³ molecules.

2) we calculate the mass of 4.00*10²³ molecules.

98 g-------------------6.022*10²³ molecules
x------------------------4.00*10²³ molecules

x=(98 g * 4.00*10²³ molecules) / 6.022*10²³ molecules≈65 g

Answer: 65 g
5 0
4 years ago
I have no idea what to do please help me quickly!
Irina18 [472]

Answer:

The farther away the planet the slower the revolution around the earth. the closer the faster.

Explanation:

its like a tetherball pole when it wraps around it gets closer and spins faster and faster untill it stops. Brainliest?

6 0
3 years ago
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Which organism has a nerve net? A fish B hydra C flatworm D sponge
Kaylis [27]
B. Hydra, because Hydra<span>are an ideal class of </span>Cnidaria<span> to research and on which to run tests.</span>
5 0
3 years ago
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