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3 years ago

What is the primary consideration in choosing a solvent for crystallizing a compound

Physics

1 answer:

Nina [5.8K]3 years ago

6 0

Answer:

1. The compound should be dissolved at the solvent boiling point.

2. It should be better none of the compound dissolve while at room

temperature.

3. The compound must have lower boiling point (low boiling point) than

melting point in hot solvent so to avoid it melts.

4. The compound have different solubility and impurity.

Explanation:

in order a compound to have a good crystallization, these are the primary consideration that should be followed.

1. The compound should be dissolved at the solvent boiling point.

2. It should be better none of the compound dissolve while at room

temperature.

3. The compound must have lower boiling point (low boiling point) than

melting point in hot solvent so to avoid it melts.

4. The compound have different solubility and impurity.

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Based on Schaffer's arguments in "The Value of a Sherpa Life," choose the statement

Tju [1.3M]

Answer:

Sherpas do work that is much more meaningful than the work other climbers do.

Explanation:

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3 years ago

Suppose the moon rotated on its axis just as quickly as Earth. Would we still always see the same side of the moon from Earth?

jasenka [17]

Answer:

No, The Moon, on the other hand, rotates once around its every 28 days, and once around the Earth in that same 28 days. The result of this combination is that the same side of the Moon is always facing the Earth.

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3 years ago

D Question 14 2 pts The universe could be considered an isolated system because

Blizzard [7]

Answer:

it would help if we knew the question and other answers

Explanation:

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3 years ago

The magnitude of the magnetic flux through the surface of a circular plate is 6.80 10-5 T · m2 when it is placed in a region of

PIT_PIT [208]

Answer:

B = 4.1*10^-3 T = 4.1mT

Explanation:

In order to calculate the strength of the magnetic field, you use the following formula for the magnetic flux trough a surface:

$\Phi_B=S\cdot B=SBcos\alpha$ (1)

ФB: magnetic flux trough the circular surface = 6.80*10^-5 T.m^2

S: surface area of the circular plate = π.r^2

r: radius of the circular plate = 8.50cm = 0.085m

B: magnitude of the magnetic field = ?

α: angle between the direction of the magnetic field and the normal to the surface area of the circular plate = 43.0°

You solve the equation (1) for B, and replace the values of the other parameters:

$B=\frac{\Phi_B}{Scos\alpha}=\frac{6.80*10^{-5}T.m^2}{(\pi (0.085m)^2)cos(43.0\°)}\\\\B=4.1*10^{-3}T=4.1mT$

The strength of the magntetic field is 4.1mT

4 0

3 years ago

A man walks 7 km East in 2 hours and then 2.5 km West in 1 hour. What is

madam [21]

<h2>How to solve?</h2>

We know that, Velocity is the rate of displacement covered. Displacement is the shortest path between the Initial and Final point covered by the body. So,

Velocity = Displacement / Time

And, when it comes to Average velocity, It is the total displacement by total time taken. So, By using this let's solve this question.....

<h2>Solution:</h2>

✏️ Refer to the attachment...

Let the body goes to point A that is 7 m East of the Initial point. Then it comes backward because West is opposite to East in perpendicular direction. It covers 1.5 m backwards in the same line to reach B which is the Final point.

So,

Displacement = Final point - Initial point

⇛ Displacement = 7 m - 1.5 m

⇛ Displacement = 5.5 m

Total time taken,

⇛ 2 hours + 1 hour

⇛ 3 hours

Finding Average displacement,

⇛ Total displacement / Total time taken

⇛ 5.5 m / 3 hours

⇛ 1.83333.... hours

So, the Final answer is,

$\huge{ \boxed{ \bold{ \purple{1.8 \bar{3}m}}}}$

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6 0

3 years ago