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Ilya [14]
3 years ago
12

After mixing the solutions in a separatory funnel, the stopper should be ________and the liquid should be ________and the layers

allowed to separate. When you get close to the interface between the layers, ________the funnel and________until the first layer______ is collected. _______to collect the second layer.
Chemistry
1 answer:
sdas [7]3 years ago
4 0

Answer:

The answer is below

Explanation:

The separation technique is used for separating immiscible liquids.

When separating, the stopper has to be removed when draining the lower layer so as to prevent a vacuum. If vacuum is allowed, the draining rate will reduce and stop.

The liquid should be mixed by shaking the funnel and then opening the stopcock so as the vent out gases.

When near interface between the layers, you should set your eye level so that you do not drain up to the second layer.

After completely draining the first layer, the second layer should be collected in a new flask.

After mixing the solutions in a separatory funnel, the stopper should be removed and the liquid should be mixed thoroughly and the layers allowed to separate. When you get close to the interface between the layers, get eye level with the funnel and slow the draining until the first layer is collected. Switch to a new flask to collect the second layer.

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2CO2 + 3H2O + 4Br2<br><br> C = <br><br> O = <br><br> H = <br><br> Br =
devlian [24]

Explanation:

2CO2 + 3H2O + 4Br2

C = 2

O = 5

H = 6

Br =8

8 0
3 years ago
A guy swam a 50 meter freestyle in 21.93 seconds. How fast is this in miles per hour?
lara [203]

Answer:

<h2>Speed = 5.107 mile/hr</h2>

Explanation:

<h3>Given:</h3>

<u>distance</u> =50m = 0.0311 mile

<u>Time</u>= 21.93 seconds/3600 =0.00609 hour

<u>Speed</u><u>=</u>?

<h3>Speed= Distance / Time </h3><h3> = 0.0311 / 0.00609</h3><h3> = 5.107 mile/hr</h3>

5 0
3 years ago
please help I don’t understand the difference between ammonium and ammonium ion. I possibly did 9.a) correct but part b is a bit
ozzi

You may find the electron diagram of ammonia and the ammonium ion in the attached picture.

Explanation:

Ammonia NH₃ have covalent bonds with the hydrogen atoms in which for each bond one electron comes from nitrogen atom (blue dot) and the other from the hydrogen atom (red dot). You may see that the nitrogen remains with the lone pair of electrons that does not participate in bonding.

Ammonia NH₃ have a basic character and is able to accept a proton H⁺ from an acid to form the ammonium ion NH₄⁺. The fourth bond formed its called a coordinative-covalent bond that is created only with the nitrogen lone pair of electrons (blue dots).

Learn more about:

ammonium ion

brainly.com/question/10874844

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5 0
3 years ago
Calculate the volume of 1 M NaOH needed to prepare 10.0 ml of a 0.10 M solution.
Mumz [18]
Answer is: <span>volume of 1 M NaOH is 1 ml.
</span>c₁(NaOH) = 1 M.
V₂(NaOH) = 10 ml.
c₂(NaOH) = 0,1 M.
V₁(NaOH) = ?
c₁ - original concentration of the solution, before it gets diluted.
c₂ - final concentration of the solution, after dilution.
V₁ - <span>volume to be diluted.
V</span>₂ - <span>final volume after dilution.
c</span>₁ · V₁ = c₂ · V₂.
V₁(NaOH) = c₂ · V₂ ÷ c₁.
V₁(NaOH) = 0,1 M · 10 ml ÷ 1 M.
V₁(NaOH) = 1 ml.
7 0
3 years ago
Which compound has a molecular ion at m/z = 58, an infra red absorption at 1650cm^-1?
rewona [7]

CH_{3}COCH_{3} (acetone) has a molecular ion at m/z = 58, an infra red absorption at 1650cm^-1

Acetone is a synthetic substance that is also naturally present in the environment. It is a tasteless, colourless liquid with a distinct odour. It is combustible, readily evaporates, and dissolves in water. It is also known as beta-ketopropane, 2-propanone, and dimethyl ketone. Plastic, fibres, medications, and other compounds are all made from acetone.

Other substances can also be dissolved with it. It is a byproduct of the breakdown of human fat and is found naturally in plants, trees, volcanic gases, forest fires, and other organisms. It can be found in landfills, tobacco smoke, and automobile exhaust. Acetone is released into the environment more through industrial processes than through natural ones.

Learn more about acetone here;

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7 0
2 years ago
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