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lys-0071 [83]
2 years ago
9

What is the density of a substance that has a mass of 42.8 g and a volume of 2.0 cm^3?

Chemistry
1 answer:
Misha Larkins [42]2 years ago
7 0

Answer:

21.4

Explanation:

Mass = M/V

42.8/2.0 = 21.4

:)

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kramer
<span>They lower the activation energy.</span>
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How does the properties of matter in liquid and gas state allow the Herons fountain to work?
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Answer:

Heron's fountain is an hydraulic machine that works because or the pressure inside of the system. Water will flow from high gravitational potential energy to low gravitational potential energy. The two sides of the system will present different pressure because they have different fluids in it (water and air) and  water pressure is higher than gas/air pressure, so it will flow.

It is important to take into account that the pressure in the columns is a function of the height of the fluid (water or air).

Explanation:

<u>The properties of liquid:</u>

- If a liquid is poured into a container, it will adapt to the container's shape

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- Liquids, as solids, can't be compressed

<u>The properies of gas:</u>

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- Gas fill up any container and spread indefinitely

- Gas molecules have a high kinetic energy

- If gas is put under pressure, the space between particles will decrease and collisions between them will increase.

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8 0
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Which landforms are created where cirques meet?
dezoksy [38]

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Explanation:

Aretes and horns are the landforms that are created where cirques meet. These landforms are products of glacier erosion in most temperate and polar regions.

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Learn more:

factors that affects erosion brainly.com/question/2473244

#learnwithBrainly

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Answer:

fitness. the ability of an organism to survive and reproduce in its environment. adaptation. the inherited characteristic that increases an organism's chance of survival.

5 0
2 years ago
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Katen [24]

Answer:

2HI + K2SO3=>2KI+H2SO3

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