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4 years ago

What would be the best technique to separate a soluble solid from a solution, like separating salt from a mixture of salt water?

Chemistry

2 answers:

zheka24 [161]4 years ago

8 0

The best way is by heating the solution. The liquid will evaporate leaving the solid, such as salt, behind.

Simora [160]4 years ago

3 0

The best method is to let the water evaporate, unless one wants to recover the water. However, case one would distill the mixture. So the water is still distilled and separated in a different container, as the solid salt remains behind in the distilling flask.

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The dissolution of calcium chloride in water is given by the following equation:

never [62]

Answer:

The reactants would appear at a higher energy state than the products.

Have a nice day!

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3 years ago

You are working the grill at a restaurant and are having trouble getting the grill lit through electrical means. You light a mat

never [62]

Answer:

in this situation I would a little bold

Explanation:

first I don't know what extinguisher I would use pretty much any that helps with fires. I'll back people up, take the hood and put it on the small fire that way it will light out more and if I open the hood and there still a little fire I would use the extinguisher and no one gets hurt :)

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3 years ago

Calculate the work (kJ) done during a reaction in which the internal volume expands from 20 L to 43 L against an outside pressur

Alenkinab [10]

Answer:

$\large \boxed{\text{-10.0 kJ}}$

Explanation:

1. Calculate the work

w = - pΔV = -4.3 atm × (43 L - 20 L) = -4.3 × 23 L·atm = -98.9 L·atm

2. Convert litre-atmospheres to joules

$w = \text{-98.9 L\cdot$atm } \times \dfrac{\text{101.3 J}}{\text{1 L$\cdot$atm }} = \text{-10000 J} = \textbf{-10.0 kJ}\\\\\text{The work done is $\large \boxed{\textbf{-10.0 kJ}}$}$

The negative sign indicates that the work was done against the surroundings.

4 0

3 years ago

Terrrrrrrrrrrrrrrrrrrrrrrr?

FrozenT [24]

what is your question?

6 0

3 years ago

Read 2 more answers

What causes hurricanes in the northern hemisphere to roster counterclockwise ?

Andrew [12]

Answer: The answer is D.

Explanation:

As the air rushes toward the center, it winds up moving in a curved path thanks to the Coriolis effect. This creates a circular spinning pattern as air travels from areas of high pressure to low pressure. That's why hurricanes originating in the northern hemisphere rotate counterclockwise.

Hope this helps!

8 0

3 years ago