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gtnhenbr [62]
3 years ago
10

The vapor pressure of a system at equilibrium

Chemistry
1 answer:
Marizza181 [45]3 years ago
3 0

Answer: The vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor that is in thermodynamic equilibrium with the condensed phase (solid or liquid) at a given temperature in a closed system. The equilibrium vapor pressure is an indication of the evaporation rate of a liquid.

Explanation:

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How many atoms are present in 9.8g of H2SO4​
aleksley [76]

Answer:

Explanation:

98 gH

2

​

SO

4

​

contains1 mole of H

2

​

SO

4

​

.

1 mole of H

2

​

SO

4

​

contain=1 mole of sulphur atoms.

∴9.8 g of H

2

​

SO

4

​

contain =0.1 mol of sulphur atom.

Thus, number of sulphur-atoms =n×N

A

​

(in 9.8 g of H

2

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SO

4

​

)

=0.1×6.023×10

23

=0.6023×10

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7 0
3 years ago
A 25.0 ml sample of gas has a pressure of 760 torr. What is the volume of the gas if the pressure decreases to 380 torr ? Assume
anygoal [31]

Answer:

50mL

Explanation:

Using Boyle's law equation as follows:

P1V1 = P2V2

Where;

P1 = initial pressure (torr.)

P2 = final pressure (torr.)

V1 = initial volume (mL)

V2 = final volume (mL)

According to the information provided in the question,

V1 = 25.0mL

V2 = ?

P1 = 760 torr.

P2 = 380 torr.

Using P1V1 = P2V2

V2 = P1V1//P2

V2 = (760 × 25) ÷ 380

V2 = 19000 ÷ 380

V2 = 50mL

4 0
4 years ago
What is the density of a liquid if it has a mass of 12.9g ?
user100 [1]
Find it on google i’m pretty sure i saw it somewhere so sorry this doesn’t help
4 0
4 years ago
1. When light is reflected, the incident rays are bent and change direction.
ololo11 [35]

1. B. False, when light is reflected, the incident rays are bent and change direction.

2. B. become diffused. Light hitting a rough surface would most likely.

3. B. False. Plane mirrors create virtual images.

4. D. All of the choices are correct.

5. B. The illusion of water on top of hot asphalt on a summer day is mirage.

6. A. The mirror refracts light rays that pass through it outward and away from the optical axis is convex mirrors.

7. A. True. The bending ability of a substance is recorded on the index of refraction.

8. A. True.  Light travels at the same speed at all times.

<h3>What is refraction of light?</h3>

The refraction of light is change in speed and direction of light when it hits obstacle.

<h3>What is reflection is light?</h3>

Reflection of Light occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface.

<h3>Reflection of light can be diffused or Specular</h3>

Specular reflection is a type of surface reflectance often described as a mirror-like reflection of light from the surface.

Diffuse reflection is the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles rather than at just one angle.

Learn more about reflection of light here: brainly.com/question/26655381

#SPJ1

8 0
2 years ago
What is the significance of wanting to know what the pH of a solution is?
balu736 [363]

pH is an important parameter for many reactions to take place in solution and in biological systems. It is related to the concentration of H⁺ ions through the following expression:

pH = 1/[H⁺] = -log [H⁺]

Wanting to know the pH of a solution is equivalent to knowing the amount of hydrogen ions present. But the pH scale is more convenient than the concentration scale because pH usually takes values between 0 and 14.

  • When pH < 7 the solution is acid.
  • When pH = 7 the solution is neutral (like pure water).
  • When pH > 7 the solution is basic.
4 0
4 years ago
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