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Jet001 [13]
2 years ago
7

Electron dot of NH3

Chemistry
1 answer:
aliya0001 [1]2 years ago
4 0

Answer:

ok ok ok ok ok ok ok k ok ok  o  ko k ko k o k o ko ko

Explanation:

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When an electron in an atom spontaneously jumps from a higher energy state to a lower energy state, the atom?
vlabodo [156]
If an atom suffers from a collision, that causes an electron to jump from a lower to higher state, it is called collisional excitation 
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2 years ago
At 25.0°c, a solution has a concentration of 3.179 m and a density of 1.260 g/ml. the density of the solution at 50.0°c is 1.249
oksano4ka [1.4K]

Answer: -

3.151 M

Explanation: -

Let the volume of the solution be 1000 mL.

At 25.0 °C, Density = 1.260 g/ mL

Mass of the solution = Density x volume

= 1.260 g / mL x 1000 mL

= 1260 g

At 25.0 °C, the molarity = 3.179 M

Number of moles present per 1000 mL = 3.179 mol

Strength of the solution in g / mol

= 1260 g / 3.179 mol = 396.35 g / mol (at 25.0 °C)

Now at 50.0 °C

The density is 1.249 g/ mL

Mass of the solution = density x volume = 1.249 g / mL x 1000 mL

= 1249 g.

Number of moles present in 1249 g = Mass of the solution / Strength in g /mol

= \frac{1249 g}{396.35 g/mol}

= 3.151 moles.

So 3.151 moles is present in 1000 mL at 50.0 °C

Molarity at 50.0 °C = 3.151 M

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2 years ago
Hawaii, which sits over a hot spot located near the center of the Pacific
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Shield Volcano . I've been their before

Explanation:

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2 years ago
Which element on the periodic table has chemical properties that are most similar to those of carbon?
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Silicon, it's bring brother would be the prime candidate, although its compounds are notably different from those of carbon.
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An atom of lithium 7 has an equal number of
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Electrons and protons because they are essentially always the same
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