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tatuchka [14]
3 years ago
6

NEED ANSWER ASAP

Physics
2 answers:
nataly862011 [7]3 years ago
4 0

Chemical energy .........

maks197457 [2]3 years ago
3 0

The answer is chemical energy I hope this helps you have a great day or great night

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A 285-mL flask contains pure helium at a pressure of 750 torr . A second flask with a volume of 455 mL contains pure argon at a
zaharov [31]

Answer:

P_{He}^|=288.85torr

Explanation:

Given data

P_{He}=750 torr\\V_{He}=285mL\\P_{Ar}=732 torr\\V_{Ar}=455 mL

Required

Partial pressure of helium

Solution

First calculate the total volume of gas mixture once the stopcock is opened

So

V_{total}=V_{He}+V_{Ar}\\V_{total}=285mL+455mL\\V_{total}=740mL

As temperature remains constant,by Boyle's Law we calculate the partial pressure of the helium gas

So

P_{He}V_{He}=P_{He}^|V_{total}\\P_{He}^|=\frac{P_{He}V_{He}}{V_{total}}\\P_{He}^|=\frac{750torr*285mL}{740mL}\\  P_{He}^|=288.85torr

5 0
3 years ago
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Describe an environment in which the sound of a ringing cell phone could not be transmitted, and explain why the ringing wouldn'
Sveta_85 [38]

Answer:

In a vacuum

Explanation:

Sound is a type of mechanical waves. Mechanical waves are waves that propagate through the oscillation of the particles in a medium, which can be either gas, liquid or solid.

A sound wave in air, for instance, is simply produced by the oscillations of the air particles back and forth along the direction of motion of the wave.

Given this definition, it is clear that mechanical waves (and so, sound waves as well) cannot be transmitted if there is no medium: therefore, they cannot be transmitted in a vacuum. So, the sound of the ringing bell would not be present in a vacuum.

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3 years ago
The electrostatic attractions in crystalline salts, such as sodium chloride, are formed by __________ between positive and negat
nikklg [1K]
D transferring electrons because that causes electricity
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3 years ago
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Body of a 218 kg starta from rest and attains the velocity of 63 m/s in 9 second
Vanyuwa [196]

Answer:

567m

Explanation:

By using formula of velocity.

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3 years ago
Two conductors made of the same material are connected across the same potential difference. Conductor A has three times the dia
Vitek1552 [10]

Answer:

<em>Good Luck!</em>

<em />

Explanation:

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