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2 years ago

On September 23 The earths axis is tilted which way?

Chemistry

1 answer:

Mariana [72]2 years ago

3 0

Answer:

The earth is tilted so its perpendicular

Explanation:

Because its straight up and down

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You decided you want to make spaghetti for supper. You first light the gas stove because you need to cook the meat. When the mea

zloy xaker [14]

Answer:

Explanation:

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3 years ago

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Science is a unique field of thought because it relies on _______ to describe the world. A Teachers and students B Observations

Norma-Jean [14]

Answer:

B) Observations and experimentation

Explanation:

this is the most suitable words to describe how is Science used in describing the world. we collect the knowledge in organized way and provide it with explanations and start to predict about the future world

ِAny Inventions are based on Science and no Inventions without Observations and experimentation

No one of us have went to a chemistry or a physics labs without using Observations and experimentation

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3 years ago

How does one recognize a redox reaction?

nika2105 [10]

Answer:

Explanation:

A redox reaction is a reaction when oxidation states (or numbers) change during reaction.

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2 years ago

The EPA scientist measures the pH level in one area of a river to be lower than normal and writes that a pollutant must have bee

shutvik [7]

Its an example of inference.

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3 years ago

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Describe Rutherford's contribution to the atomic model.

Nady [450]

Answer:

Rutherford's experiment, also known as

$\alpha - scattering \: experiment$

supports the existence of neutrons and the nucleus.

Explanation:

In the above diagram, Rutherford was trying to explain his contributions using thin foils of gold and other metals as targets for alpha particles from a radioactive source.

He observed that the majority of particles penetrated the foil either undeflected or with only a slight deflection. But, every now and then an alpha particle was scattered(or deflected) at a large angle..

According to Rutherford, most of the atoms must be empty space. This explains why the majority of alpha particles passed through through the gold foil with little or no deflection. The atoms positive charges, Rutherford proposed are all concentrated in the Nucleus, which is a dense central core within the atom.

Whenever an alpha particle came close to a nucleus in the scattering experiment, it experienced a large repulsive force and therefore a large deflection. Moreover, an alpha particle coming towards a nucleus would be completely repelled and its direction would be reversed. The positively charged particles in the Nucleus are called Protons.

I hope you find this useful... Have a lovely day. 

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3 years ago