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iren [92.7K]
2 years ago
7

PLEASEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPPPPPPPPPPP

Chemistry
1 answer:
Sophie [7]2 years ago
7 0

give a very origin example a student that include B sin displayed

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Is Dry Ice a pure substance or a Mixture ?
r-ruslan [8.4K]

Answer:

Dry Ice is a pure substance.

Explanation:

Dry Ice is the solid form of Carbon Dioxide which is formed when gaseous Carbon Dioxide molecules sublime at very low temperatures (-109.5 Fahrenheit).

3 0
3 years ago
How can you tell whether one glass of water has more thermal energy than another, identical glass of water
kumpel [21]
You can know which one has more thermal energy by testing the temperature, if it is warmer the more energy it has because the particles are going faster than they would if it was cold. because, when its cold the particles slow down until they are so cold they are frozen. (ice).
8 0
3 years ago
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The number of proton, neutrons and electrons in oxygen atom
Ksenya-84 [330]

Answer:

in an oxygen atom there are:

protons:8

electrons:8

neutrons:8

Explanation:

this is because the atomic number of oxygen is 8 and that is the proton number and the electron number is the same as the atomic number

4 0
3 years ago
Why is rain likely when warm, moisture-laden air meets cold air? A) The lighter warm air will rise and cool down, causing conden
DerKrebs [107]

Answer:

B) The cold air moves faster and pushes the warm air away, causing condensation and rain.

8 0
3 years ago
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Increasing the temperature of gas in a container that cannot expand is a way to _______. decrease the volume of the gas decrease
alex41 [277]

Answer:

Increase the pressure of the gas

Explanation:

According to the Pressure law, for a fixed mass of gas, at a constant volume (V), the pressure (P) is directly proportional to the absolute temperature (T).

From the kinetic molecular theory, gases are composed of particles which are in constant motion, colliding with themselves as well as with the walls of their container.

When the temperature of these gas molecules is increased, the molecules acquire more kinetic energy and the rate of collisions increases. Since the container cannot expand, the increase in pressure is due to the increase in collisions between the molecules of the gas as well as with the walls of their container.

4 0
3 years ago
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