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natali 33 [55]
3 years ago
15

What kind of scientist would study the the first of a car running

Chemistry
1 answer:
iVinArrow [24]3 years ago
7 0

Answer:

A physicist

Explanation:

hope this will help you

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An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84
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You have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g
Leno4ka [110]

If you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

<h3>What is density?</h3>

The density of an object is the ratio of mass to volume of object.

Density = mass/volume

volume = mass/density

at a constant density, the volume of an object is proportional to its mass.

From the question, you have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g, the new mass will take the following volume.

180 g = 36 cm³

90 g =  ?

= (90 x 36) / 180

= 18 cm³

Thus, if you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

Learn more about radium here: brainly.com/question/23781489

#SPJ1

6 0
1 year ago
Is know as a force that pulls an object weight to center of the earth
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That force would be gravity.  Gravity is what pulls any object down towards Earth due to the large mass of the Earth.

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Which of the following is the best definition of a physical change?
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1.Hydrogen is colorless odorless gas that is less dense than air it will react with oxygen to form water which of the following
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1 it reacts with oxygen to form water.
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3)54.3g

hope this helps :)
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