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Schach [20]
3 years ago
10

Uranium atoms each have 92 protons. How many protons does each U-238 atom have?

Chemistry
2 answers:
elena-s [515]3 years ago
8 0

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

Atomic number is defined as the number of protons or electrons that are present in a neutral atom. It is represented by Z.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom. It is represented by A.

Mass number = Number of protons + Number of neutrons

We are given an isotopic representation of _{92}^{238}\textrm{U}

Number of protons = 92

Mass number = 238

Number of neutrons = 238 - 92 = 146

For every uranium atom, number of protons will be 92

Hence, the correct answer is Option A.

Nesterboy [21]3 years ago
5 0

A.92 all Uranium atoms contain the same amount of protons

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Read 2 more answers
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\large \boxed{\text{0.180 mol/kg }}

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\text{Molal concentration} = \dfrac{\text{moles of solute}}{\text{kilograms of solvent}}

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3. Molal concentration

\text{Molal concentration} = \dfrac{\text{0.1711 mol}} {\text{0.0900 kg}} = \textbf{1.90 mol/kg}\\\\\text{The molal concentration of the solution is $\large \boxed{\textbf{0.180 mol/kg }}$}

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