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Triss [41]
3 years ago
13

How many atoms for each element in this compound: Pb3(PO4)2 Pb = P= O=

Chemistry
1 answer:
Leokris [45]3 years ago
3 0

Answer:

In the compound Pb3(PO4)2, there are 3 Pb atoms, 2 P atoms, and 8 O atoms.

Let me know if this helps!

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A sample of excited atoms lie 3.314×10−19 J above the ground state. Determine the emission wavelength of these atoms.
BabaBlast [244]

The emission wavelength of the atoms excited above the ground state is 599.8 nm.

<h3>Emission wavelength of the atoms</h3>

The emission wavelength of the atom is determined by using the following formulas as shown below;

E = hf

E = hc/λ

where;

  • E is the energy of the atom
  • h is Planck's constant
  • c is speed of light
  • λ is the emission wavelength

λ = hc/E

λ = (6.626 x 10⁻³⁴ x 3 x 10⁸) / (3.314 x 10⁻¹⁹)

λ = 5.998 x 10⁻⁷ m

λ = 599.8 x 10⁻⁹ m

λ = 599.8 nm

Thus, the emission wavelength of the atoms is 599.8 nm.

Learn more about wavelength here: brainly.com/question/10728818

8 0
2 years ago
Which of the above electron dot diagrams is wrong and why?
Elodia [21]

Answer:

Oxygen, it's supposed to have six valenge electrons.

Explanation:

Count the dots on the oxygen atom, you'll see seven, but there's supposed to be six.

5 0
3 years ago
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Why does the temperature of different layers of the atmosphere vary
scoundrel [369]
It has different reasons. the temperature difference is basically the main reason why the earth atmosphere has layers.
Theoretically the temperature varies because of the different molecules and atoms. for instance the first layer known as troposphere has the greenhouse effect of CO2,CH4, etc. and is covered with a layer of O3...
7 0
3 years ago
A gas occupies a volume of 40.0 milliliters at 20°C. If the volume is increased to 80.0 milliliters at constant pressure, the re
gizmo_the_mogwai [7]

Knowing that volume is directly proportional to Kelvin temperature and that, in this situation, the final volume is double the initial volume, the final temperature (in Kelvin) should be double the initial temperature (in Kelvin).

20\textdegree\text{ C}=2\overline93.15 \text{ K}\\2(2\overline93.15 \text{ K})=5\overline86.3 \text{ K}=3\overline13.15\textdegree\text{ C}=310\textdegree\text{ C}

7 0
3 years ago
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URGENT! PLEASE HELP ASAP
barxatty [35]
14.7 is the right answer plus 86
4 0
3 years ago
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