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3 years ago

What evidence caused Thomson to change Dalton's solid sphere model into the plum pudding model?

1 answer:

4 0

He found that the cathode ray elements have even negligible mass as compared to atoms. So he found that electrons are actually subatomic particles of an atom. That is why he suggested the plum pudding model.
Explanation:
He discerned that atoms contain charged particles, that he was known as electrons.
In chemist theoryThe indivisibility of associate, degree atom was proved wrong: associate degree atom is often any divided into protons, neutrons and electrons. but associate degree atom is that the smallest particle that takes part in chemical reactions. in step with a chemist, the atoms of the same part are similar all told respects.

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20 POINTS HELP ASAP

icang [17]

Answer:

what is it?? plss helpp taking exam rn

Explanation:

7 0

3 years ago

Get this scenario

Ilia_Sergeevich [38]

Lol. It is now a solution and not really inseparable, so your only logical option would be to throw it away and try again.

4 0

4 years ago

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True or False? Nuclear fusion releases less energy than nuclear fission does.

elixir [45]

False

nuclear fusion produces more energy than a nuclear fission reaction.

8 0

3 years ago

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Which of the answer choices best describes elements?

lianna [129]

It can be a compound or a single element. An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements, butcarbon, hydrogen, nitrogen and oxygen are only a few that make up the largest portion of Earth.

I would say d.

4 0

3 years ago

You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the

oksian1 [2.3K]

The empirical formula of this compound is equal to $Fe_{2}O_3$ .

<h3>Empirical formula</h3>

To calculate the empirical formula of a compound, it is necessary to know the number of moles present.

Therefore, we will use the molar mass of iron and oxygen to find the amount of moles, so that:

$MM_O = 16g/mol\\MM_Fe = 55.8g/mol$

$MM = \frac{m}{mol}$

Oxygen

$16 = \frac{4.8}{mol}$

$mol = 0.3$

Iron

$55.8 = \frac{11.2}{mol}$

$mol = 0.2$

Finally, as the empirical formula is composed of integers numbers of moles, just multiply the values by the smallest common factor to transform into an integer, so that:

O => $0.3 \times 10 = 3moles$

Fe => $0.2 \times 10 = 2moles$

So, the empirical formula of this compound is equal to $Fe_{2}O_3$

Learn more about empirical formula in: brainly.com/question/1363167

6 0

3 years ago