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Luda [366]
3 years ago
11

The sodium isotope with 13 neutrons. Express your answer as an isotope

Chemistry
1 answer:
wariber [46]3 years ago
6 0

Answer:

          \large\boxed{\large\boxed{^{24}_{11}Na}}

Explanation:

The question is asking to write the <em>isotopic symbol </em>of the form ^A_ZX for the <em>sodium isotope with 13 neutrons</em>.

In general, the isotopic symbol in the given form shows:

  • The element's chemical symbol: X

  • A: mass number of the isotope, written as a superscript to the left of the element's simbol, and

        A = number of protons + number of neutrons

  • Z: atomic number of the isotope, written as a subscript to the left of the elements's symbol,

        Z = number of protons

The atomic symbol of sodium is Na.

The atomic number, or number of protons, is the same for every isotope of the element, and you can find it in any periodic table. Tha atomic number of sodium is 11. Thus:

  • Z = 11

The mass number is the number of protons plus neutrons, hence:

  • A = 11 + 13 = 24

Now you can write the isotope symbol for the sodium isotope with 13 neutrons:

         ^{24}_{11}Na

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Complete Question

The complete question is shown on the first uploaded image  

Answer:

The density is  \rho =  8.21479 g/cm^3

Explanation:

From the question we are told that

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8 0
3 years ago
48g of magnesium and 32g of oxygen react to form 80g of magnesium oxide.
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Mass of Oxygen : 8 g

<h3>Further explanation</h3>

Given

48g of Magnesium

32g of Oxygen

Required

Mass of Oxygen

Solution

The ratio of Mg and O in MgO :

48 g : 32 g = 3 : 2

Total ratio = 3+2 = 5

So for 20 g MgO, mass of Oxygen :

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Or

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mass O in 20 g MgO =

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3 0
2 years ago
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