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3 years ago

As a consequence of the discovery of the nucleus by rutherford, which model of the atom is thought to be true?

Chemistry

2 answers:

ivanzaharov [21]3 years ago

8 0

The correct answer is A.

8090 [49]3 years ago

7 0

Answer:

The correct answer is<em> a. electrons are distributed around the nucleus and occupy almost all the volume of the atom.</em>

Explanation:

Rutherford's experiment was to bombard a very thin sheet of gold (Au atoms) with alpha particles (positive charges). He thought that if the atom is composed by both negative and positive charges together (as Thompson had proposed) it would be electrically neutral and the positive charges would pass without deviation. He observed that most of the particles passed throught the sheet without deviation (as he expected) <u>but several particles suffered a considerable deviation and others had bounced towards the emission source</u>. So, he proposed a new atomic model in which the positive charge is concentred in the nucleus (alpha particles which passed nearly the nucleus were repelled with a considerable deviation) and surrounding the nucleus are the electrons (negative charge) which occupy a larger volume.

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Answer:

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Explanation:

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2 years ago

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3 years ago

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3 years ago

Salt in crude oil must be removed before the oil undergoes processing in a refinery. The

irina1246 [14]

Answer:

$\large \boxed{0.64 \, \%}$

Explanation:

Assume you are using 1 L of water.

Then you are washing 4 L of salty oil.

1. Calculate the mass of the salty oil

Assume the oil has a density of 0.86 g/mL.

$\text{Mass of oil} = \text{4000 mL} \times \dfrac{\text{0.86 g}}{\text{1 mL}} = \text{3440 g}$

2. Calculate the mass of salt in the salty oil

$\text{Mass of salt} = \text{3440 g} \times \dfrac{\text{5 g salt}}{\text{100 g oil}} = \text{172 g salt}$

3. Calculate the mass of salt in the spent water

$\text{Mass of salt} = \text{1000 g water} \times \dfrac{\text{15 g salt}}{\text{100 g water}} = \text{150 g salt}$

4. Mass of salt remaining in washed oil

Mass = 172 g - 150 g = 22 g

5. Concentration of salt in washed oil

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3 years ago

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Mars2501 [29]

Answer:

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Explanation:

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3 years ago

Read 2 more answers