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cricket20 [7]
2 years ago
13

How is emission spectra produced?

Chemistry
2 answers:
Scorpion4ik [409]2 years ago
7 0

Answer:

emission spectra are produced by thin gases in which the atoms do not experience many collisions (because of the low density). The emission lines correspond to photons of discrete energies that are emitted when excited atomic states in the gas make transitions back to lower-lying levels.

Explanation:

gulaghasi [49]2 years ago
3 0

Answer:

Atomic emission spectra are produced when excited electrons return to the ground state.

Explanation:

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3 years ago
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the product? Explain you
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A rigid 3.80 L sealed vessel contains 0.650 mol Ne, 0.321 mol Kr, and 0.190 mol Xe. Find the density of the mixture in g/L.
Eddi Din [679]

Answer:

17.09g/L

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Density = total mass of elements/ volume

We need to find the mass of each mixture constituents using their molar mass:

mole = mass/molar mass

For Neon (Ne) which contains 0.650mol;

0.650 = mass/20.18

mass = 0.650 × 20.18

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For Krypton (Kr) which contains 0.321mol;

0.321 = mass/83.79

mass = 0.321 × 83.79

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For Xenon (Xe) which contains 0.190mol;

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Density = total mass / volume

Density = 64.96g / 3.80L

Density of the mixture = 17.09g/L

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How many standard amino acids are there in the human body?
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Explanation:

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2 years ago
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<span>Find molar mass of Fe2O3 = 159.7 g/mol
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3 years ago
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