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exis [7]
3 years ago
6

Manganese is a transition metal. Consider the isotope: Mn-53. How many protons are in an atom of Mn-53 if the atom has a charge

of 5?
Chemistry
1 answer:
Leokris [45]3 years ago
7 0

Answer:

25

Explanation:

Isotopes of an element are the same element with different mass numbers but the same atomic number or the number of protons.

we know that in a balanced atom

Number of electrons = Number of protons = Atomic number

Atomic number (z) of manganese = 25

For Mn+5, the number of protons remains the same = 25

However, the number of electrons on Mn+5 = 21

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3 years ago
What NaCl NaCl concentration results when 249 mL 249 mL of a 0.850 M 0.850 M NaCl NaCl solution is mixed with 667 mL 667 mL of a
tamaranim1 [39]

Answer:

The answer to your question is 0.54M

Explanation:

Data

Final concentration = ?

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Process

1.- Calculate the number of moles in both solutions

Number of moles 1 = Molarity 1 x Volume 1

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Number of moles 2 = Molarity 2 x Volume 2

                                = 0.420 x 0.667

                                = 0.280

Total number of moles =  0.212 + 0.280

                                      = 0.492

2.-Calculate the final volume

Final volume = Volume 1 + Volume 2

Final volume = 0.249 + 0.667

                      = 0.916 l

3.- Calculate Molarity

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4 0
3 years ago
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myrzilka [38]

Answer:

The correct option is: B. Carbon 5 only

Explanation:

Carvone is a naturally-occurring monoterpenoid consisting of a six-membered cyclic ring. <u>The </u><u><em>carbon-5</em></u><u> of this cyclic ring of Carvone is </u><u><em>chiral, </em></u><u>due to which Carvone exhibits </u><u><em>enantiomerism</em></u><u>.</u>

The two <em>enantiomeric forms</em> of Carvone are: R-(–)-carvone, or L-carvone, and S-(+)-carvone, or D-carvone.

<em><u>These two enantiomeric forms differ in the orientation of the substituents on the chiral carbon-5.</u></em>

<u />

<u>Therefore, the correct option is B. Carbon 5 only.</u>

5 0
3 years ago
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