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disa [49]
3 years ago
15

A double bond between two carbon atoms involves the sharing of a total of

Chemistry
1 answer:
ycow [4]3 years ago
6 0
Is four electrons the answer you’re looking for?
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Calculate the change in energy of an atom that emits a photon of wavelength 2.21 meters. (Planck's constant is 6.626 x 10-34 jou
UNO [17]

9.01 × 10⁻²⁶ J

<h3>Explanation</h3>

ΔE = h · f

Where

  • ΔE the change in energy,
  • h the planck's constant, and
  • f frequency of the emission.

However, only λ is given.

f = c / λ

Where

  • f frequency of the emission,
  • λ wavelength of the emission, and
  • c the speed of light.

For this emission:

f = 2.998 × 10⁸ / 2.21 = 1.36 × 10⁸ s⁻¹.

ΔE = h · f = 6.626 × 10⁻³⁴ × 1.36 × 10⁸ = 9.01 × 10⁻²⁶ J

5 0
3 years ago
A mountaineer shouts for help Half a second later (0.5 she hears the echo How far away is the rock face which is reflecting her
Tema [17]

Answer:

82.5 metres

Explanation:

speed=330m|s

initial time taken =0.5÷2=0.25

distance=speed×time

330m|s × 0.25s = 82.5m

6 0
3 years ago
Does The nucleus of an atom contain all of the protons in the atom
insens350 [35]

Answer:

The nucleus, that dense central core of the atom, contains both protons and neutrons.

So to answer your question yes it does contain all of the protons in the atom.

* Hopefully this helps:) Mark me the brainliest:)!

5 0
4 years ago
Change for a liquid state to a solid state is known as what phase change?
NeTakaya

Answer:

B. To change from a liquid state to a solid state is called Freezing

5 0
3 years ago
Read 2 more answers
What did Rutherford's gold-foil experiment help him conclude?
Svetach [21]
C. mass is protons and neutrons. Both are in the nucleus
8 0
3 years ago
Read 2 more answers
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