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shutvik [7]
3 years ago
11

What is the general term used for the following elements sodium 23 sodium 24 and sodium 31?​

Chemistry
1 answer:
vivado [14]3 years ago
5 0

Answer:

Isotopes.

Explanation:

Hello,

In this case, in chemistry, we defined isotopes as those atoms of the same element that eventually have the same amount of protons and electrons but different specific atomic masses which is also related with different amount of neutrons among atoms, that is why the atomic mass of an element corresponds to the average atomic mass of each isotope composing it.

Commonly, those isotopes are represented via the name of the element followed by its atomic mass, for instance carbon-14 which is widely used for dating. In such a way, for sodium-23, sodium-24 and sodium-31, we talk about the isotopes of sodium.

Best regards.

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Helium gas diffuses 4 times as fast as an unknown gas. What is relative molecular mass of the gas​
Inessa05 [86]

The relative molecular mass of the gas​ : 64 g/mol

<h3>Further explanation</h3>

Given

Helium rate = 4x an unknown gas

Required

The relative molecular mass of the gas​

Solution

Graham's Law

\tt \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }

r₁=4 x r₂

r₁ = Helium rate

r₂ = unknown gas rate

M₁= relative molecular mass of Helium = 4 g/mol

M₂ = relative molecular mass of the gas​

Input the value :

\tt \dfrac{4r_2}{r_2}=\sqrt{\dfrac{M_2}{4} }\\\\16=\dfrac{M_2}{4}\\\\M_2=64~g/mol

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Explanation:

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Explanation:

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