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Black_prince [1.1K]
2 years ago
5

the energy transformation that occurs when a firework goes off is a chemical to thermal to light and sound. however, some of the

energy is destroyed during the explosion
Chemistry
1 answer:
quester [9]2 years ago
7 0

Answer:

false

Explanation:

energy can't be destroyed

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Identify the number of each type of atom in this formula 5C12H22O11<br><br>wdym
Lady bird [3.3K]
There are 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms in one molecule of C12H22O11. 
In five molecules there are 60 carbon atoms, 110 hydrogen atoms, and 55 oxygen atoms.
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Round 0.0011675cg to four significant figures
atroni [7]

Answer:

answer is 0.001168 is correct

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Which atomic models does Rutherford’s experimental evidence support? Explain why these models (Dalton, Bohr, Thomson models) are
ipn [44]

Answer:

Rutherford was the first scientist who proposed the nuclear model of the atom. According to his atomic model, most of the space of an atom is empty, while the nucleus containing protons and neutrons lie at the center of the atom while electrons revolve around nucleus in definite orbits.

If we talk about studies of some other scientists like Dalton, Neil Bohr and JJ Thomson, they all are compatible with Rutherford's results to a large extent.

For example: Dalton's atomic model assumed that atoms of any substance are similar in size and atoms react to form compounds. Rutherford's concept indicated that atoms contain electrons and they are in a specific number which can be shared to form compounds.

If we talk about Bohr's model, it states that electrons revolve around nucleus in specific shells, this again is compatible with Rutherford's results which gave the concept of shells.

If we talk about Thomson's Plum pudding model, that describe atom as negative particles floating within a soup of diffuse positive charge. This is also compatible with the results of Rutherford that state that negative electrons surround positive nucleus.

Rutherford's model was best atomic model but still it took help from many previous studies and therefore was compatible with the results of old models.


Hope it help!

5 0
3 years ago
Read 2 more answers
Which of these describes an exothermic reaction?
Paul [167]

A nswer: -

C. Energy is released by the reaction

Explanation:-

An exothermic reaction is one in which during the progress of the reaction heat is evolved.

So energy is released by the reaction.

It cannot be created as energy is neither created nor destroyed as per the Law of conservation of energy. Energy is not transferred either.

The energy released during the progress of the reaction originates from the chemical bonds of the reactants as they break during their conversion into products.

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2 years ago
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What is the product of a force and the time during which the force acts
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Impulse is the product of a force and the time during which that force acts on a body.

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