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stepladder [879]
3 years ago
9

HELP PLEASEEE!!!

Chemistry
1 answer:
Likurg_2 [28]3 years ago
6 0

Answer:

Atomic theory is. A

Explanation:

Subject to change if new information is discovered. B. A solution to the problem of differing isotopes. C. Unchanged able D. A descriptive table that lists all of the element

I hope this answered your question.

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What is Ionization Energy?
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Answer:

Ionization energy is a measure of the difficulty involved in  removing an electron from an atom or ion or the tendency of an atom or ion to surrender an electron.

Explanation:

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X⁴-2x³-2x²-2x-1=0<br> i need the right answer​
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A rigid container of O 2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273°C ?
Vinvika [58]

Answer:

260 kPa

Explanation:

To answer this problem we can use <em>Gay-Lussac's law</em>, which states that at a constant volume (such as is the case with a rigid container):

  • P₁T₂=P₂T₁

Where in this case:

  • P₁ = 340 kPa
  • T₂ = 273 °C ⇒ 273 + 273.16 = 546 K
  • P₂ = ?
  • T₁ = 713 K

We <u>input the data</u>:

  • 340 kPa * 546 K = P₂ * 713 K

And <u>solve for P₂</u>:

  • P₂ =  260 kPa
5 0
3 years ago
What is the answer to this question
solong [7]
It is known as inferring
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Calculate the energy of the violet light emitted by a hydrogen atom with a wavelength of 410.1 nm.
Ket [755]

Answer:

4.85 x 10⁻¹⁹J

Explanation:

Given parameters:

Wavelength = 410.1nm

Unknown:

The energy of the violet light = ?

Solution:

The energy of a wave can be derived using the expression below;

    E = \frac{hc}{wavelength}

h is the planck's constant

c is the speed of light

  Insert the parameters and solve;

      E = \frac{6.62 x 10^{-34}  x 3 x 10^{8} }{410.1 x 10^{-9} }   = 4.85 x 10⁻¹⁹J

4 0
3 years ago
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