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xenn [34]
2 years ago
7

Give the number of protons and neutrons in the nucleus of the following atoms

Chemistry
1 answer:
damaskus [11]2 years ago
3 0

The number of protons and neutrons in the nucleus​ : 92 and 146

<h3>Further explanation</h3>

Given

Mass number = 238

Atomic number = 92

Required

Protons and neutrons

Solution

Mass number=number of protons + neutrons

Atomic number=number of protons=number of electrons

Atomic number = 92⇒number of protons=92

Number of neutrons = mass number - atomic number

Number of neutrons = 238 - 92 = 146

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What is the term for the concentration expression that relates the moles of solute dissolved in each liter of solution?
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Answer: -

Molarity is the term for the concentration expression that relates the moles of solute dissolved in each liter of solution.

Explanation: -

Molarity is defined as number of moles of solute dissolved per litre of the solution.

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3 years ago
Convert 2.39 x 1022 molecules of water into moles of water
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Answer:

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Number of moles is given by

\dfrac{2.39\times 10^{22}}{6.022\times 10^{23}}

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