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MrRissso [65]
3 years ago
8

Four students wrote different analogies to describe an electron before the formation of an ionic bond.

Chemistry
2 answers:
Leto [7]3 years ago
6 0

Student C: A big, greedy dog stealing away a bone from a smaller dog

Monica [59]3 years ago
5 0

Answer: Option (c) is the correct answer.

Explanation:

An ionic bond is defined as the bond which occurs when there will be transfer of electrons between the combining atoms.

For example, potassium donating an electrons to chlorine atom will result in the formation of an ionic bond.

So, the analogy presented by student C, shows that greedy dog stole away the bone from a smaller dog. This is similar to an atom whose one valence electron is readily taken away by an electron deficient atom.

Thus, we can conclude that out of the given options, student C: A big, greedy dog stealing away a bone from a smaller dog, presented a correct analogy.

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Calculate how many grams would be required to prepare 600. 0 ml of 0. 150 m of naf? molar mass of naf is 41. 9 g/mo
marta [7]

Considering the definition of molarity and molar mass, the mass of NaF required is 3.771 grams.

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity=\frac{number of moles}{volume}

Molarity is expressed in units \frac{moles}{liters}.

<h3>Definition of molar mass</h3>

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

<h3 /><h3>Mass of NaF required</h3>

In this case, you know:

  • molarity= 0.15 M= 0.15 \frac{moles}{L}
  • number of moles= ?
  • volume= 600 mL= 0.6 L

Replacing in the definition of molarity:

0.15\frac{moles}{L} =\frac{number of moles}{0.6 L}

Solving:

0.15 \frac{moles}{L} × 0.6 L= number of moles

<u><em>0.09 moles= number of moles</em></u>

The molar mass of NaF is 41. 9 g/mol. So, you can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 41.9 grams, 0.09 moles of the compound contains how much mass?

mass=\frac{0.09 molesx41.9 grams}{1 mole}

<u><em>mass= 3.771 grams</em></u>

Finally, the mass of NaF required is 3.771 grams.

Learn more about

molar mass:

brainly.com/question/5216907

brainly.com/question/11209783

brainly.com/question/7132033

brainly.com/question/17249726

molarity:

brainly.com/question/9324116

brainly.com/question/10608366

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#SPJ12

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