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Vesna [10]
3 years ago
9

Electromagnetic waves vary in

Chemistry
2 answers:
Nataly_w [17]3 years ago
8 0
I believe the answer is A. <span>wavelength and frequency. </span>
Igoryamba3 years ago
3 0
~Hello there! ^_^

Your question: Electromagnetic waves vary in..?

Your answer: Electromagnetic waves vary in wavelength and frequency

The answer is option A.

Happy Studying! =)



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Calculate sound speed in hydrogen H2 at temperture 50 C degree. Answer give in meter per second.
irina [24]

Answer:

The speed of sound in hydrogen gas is 361.5 ^{\circ} C

Explanation:

It is given that the temperature is 50 ^{\circ} C.

The speed of sound in meter per second is calculated by an equation.

The equation states that speed of the sound in meter per second is equal to the sum of the product of the temperature in degree celsius with 0.60 and a constant that is 331.5.

The equation is written as:

speed \ of \ sound \left(m/s \right) = 0.60 \times T + 331.5

Put the value of T = 50 then the equation becomes,

speed \ of \ sound \left(m/s \right) = 0.60 \times 50 + 331.5

Speed of sound (in m/s) = 361.5 m/s

4 0
3 years ago
Describe to me the difference on an<br> atomic/particle level between a Solid and a Gas.
Nitella [24]
Particles in a: gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.!
7 0
3 years ago
Which of the following substances
andreev551 [17]
A, Saline NaCI and H,0
8 0
3 years ago
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What are the units of molar mass?<br> A. L/g<br> B. mol/g<br> C. g/L<br> D. g/mol<br> SUBST
rosijanka [135]

Answer:

D - g/mol

step by step method

7 0
3 years ago
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What is the quantity of carbon-14 in a bone after 17,190 years if the initial mass of C-14 is 0.300 grams and the half-life is 5
Licemer1 [7]

Answer:

A. 0.038 g.

Explanation:

  • The decay of carbon-14 is a first order reaction.
  • The rate constant of the reaction (k) in a first order reaction = ln (2)/half-life = 0.693/(5730 year) = 1.21 x 10⁻⁴ year⁻¹.

<u><em>The integration law of a first order reaction is:</em></u>

<em>kt = ln [Ao]/[A]</em>

k is the rate constant = 1.21 x 10⁻⁴ year⁻¹.

t is the time = 17,190 years.

[Ao] is the initial concentration of carbon-14 = 0.300 g.

[A] is the remaining concentration of carbon-14 = ??? g.

∵ kt = ln [Ao]/[A]

∴ (1.21 x 10⁻⁴ year⁻¹)(17,190 years) = ln (0.300 g)/[A]

2.08 =  ln (0.300 g)/[A]

Taking exponential for both sides:

8.0 = (0.300 g)/[A]

<em>∴ [A] = 0.0375 g ≅ 0.038 g</em>

4 0
3 years ago
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