Will mark as Brainliest. Changes of which of the following do not shift

Will mark as Brainliest. Changes of which of the following do not shift the equilibrium of a chemical system? pressure time temperature concentration

2 months ago

Solution 1

Guest Guest #9001
2 months ago
Time and temperature

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The gravitational pull from the sun and planets keep the planets going in a circular movements and not running into each other. The gravitational pull from the sun and planets which is causing them not to bump into each other. Hope this helps!

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Hello,

Both the brain and the spinal cord are protected by _____.
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Will mark as Brainliest. According to the Bronsted-Lowry definition, which of the following is formed when a base disassociates? a conjugate acid a salt a conjugate base a stronger acid
Solution 1
When a base disassociates a conjugate acid is formed.
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A student is shown a simple model of particles that make up a liquid,as shown. How should the model be changed to show the particles of a solid? A. Increase the velocities of the particles, and increase the space between the particles B. Increase the velocities of the particles, and decrease the space between the particles C. Decrease the velocities of the particles, and increase the space between the particles D. Decrease the velocities of the particles, and decrease the space between the particles
Solution 1
Answer:
            Option-D : Decrease the velocities of the particles, and decrease the space between the particles.

Explanation:
                     The solid state of matter is composed of particles closely packed with a minimum space between them. This closed packing of particles occur due to strong interatomic or intermolecular interactions between particles. Therefore, solids particles have zero translational and rotational motions and only show vibrational motions. So, decrease in velocity and decrease in space between particles is the right answer for making solids.
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When determining the motion of the planets in the solar system what is a good reference point to use
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How many double bonds are in an alkane?
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Where do you see physical and chemical weathering on a daily basis?
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If you look carefully at the world, you will notice that there are many examples of physical and chemical weathering all around us.

Physical weathering occurs when rocks are broken apart without them changing their chemical composition. An example would be how, during the winter, ice can grow in cracks of rocks, weakening and eventually breaking them apart.

On the other hand, chemical weathering refers to rain water reacting with the mineral grains in rocks in order to form new minerals. An example of this would be how metal objects sometimes rust if they are left in the rain constantly.

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Question
Na2SO4 is dissolved in water to make 450 mL of a 0.250 M solution. What is the molar mass of Na2SO4, and how many moles are needed?
Solution 1
Molarity is Given as,

                       Molarity  =  Moles / Volume of Solution  --- (1)

Data Given:
¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬†Molarity¬† =¬† 0.250 mol.L‚ĀĽ¬Ļ

                   Volume  =  450 mL  =  0.45 L

Solving equation 1 for Moles,

                    Moles  =  Molarity × Volume

Putting values,

¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† Moles¬† =¬† 0.250 mol.L‚ĀĽ¬Ļ¬†√ó 0.45 L

                    Moles  =  0.1125 mol

Now, 
converting moles into grams,
As,
                    Moles  =  Mass / M.mass
Or,
                    Mass  =  Moles × M.mass

¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† ¬† Mass¬† =¬†¬†0.1125 mol¬†√ó 142 g.mol‚ĀĽ¬Ļ

                    Mass  =  15.97 g

Result:
¬† ¬† ¬† ¬† ¬† ¬† Molar Mass of Na‚āāSO‚āĄ¬† =¬† 142 g.mol
‚ĀĽ¬Ļ

            Moles needed  =  0.1125 mol