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Ivahew [28]
3 years ago
6

What reagent could be used to separate Br- from CH3 CO2 when added to an aqueous solution containing both.

Chemistry
2 answers:
Mila [183]3 years ago
8 0

Answer: A) AgNO_3

Explanation: All acetates are soluble.

All compounds of Alkali metals are soluble.

Bromides of Barium, and copper are soluble but that of silver is insoluble.

So, to separate bromide ion from acetate ion, we need to mix silver nitrate to the mixture.

Hence, the right choice is A) AgNO_3 .

AgNO_3(aq)+Br^-(aq)\rightarrow AgBr(s)+NO_3^-(aq)

Serjik [45]3 years ago
6 0
C is the answer for this!
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I still need a bit of help.
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A solution is made by mixing 33.0 ml of ethanol, C2H6O and 67.0 ml of water. Assuming ideal behavior, what is the vapor pressure
ivann1987 [24]
Grams ethanol = 33 ml times .789 gms/ml = 26.037 gms 

<span>Moles ethanol = 26.037 gms / 46 gms/mole = .57 moles </span>

<span>Moles water = 67 ml or 67 grams/18 gms/mole = 3.22 moles </span>

<span>total moles = .57 + 3.72 = 4.29 moles </span>

<span>Mole fraction ethanol = .57 moles ethanol / 4.29 moles total = 0.13</span>

<span>Moles fraction water = 3.72 moles water / 4.29 moles total = 0.87</span>

<span>Partial pressure of ethanol = mole fraction ethanol (.13) _ times VP ethanol 43.9 torr) = 5.707 torr </span>

<span>partial pressure water = mole fraction water .87) times VP water (l7.5 torr) = 15.23 torr </span>

<span>Total vapor pressure over solution = 5.71 torr + 15.23 torr = 20.94 torr</span>
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3 years ago
What is the mathematical relationship between color (wavelength) and energy
Setler [38]
The greater the energy, the larger the frequency and the shorter (smaller) the wavelength. Given the relationship between wavelength and frequency — the higher the frequency, the shorter the wavelength — it follows that short wavelengths are more energetic<span> than long wavelengths.</span>
5 0
4 years ago
What is the formula for magnesium combining with chlorine ​
Irina18 [472]

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8 0
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Read 2 more answers
Read the information on Hydrochloric Acid. List four ways you can avoid injury while using HCl and three steps you would take in
lisabon 2012 [21]

Answer:

Find the list and explanation below.

Explanation:

Hydrochloric acid shortened as HCl is a harmful chemical when not handled properly. Four ways to avoid injury with hydrochloric acid include;

1. Dilution: It is advised to dilute the concentrated hydrochloric acid with a reasonable amount of water so that its corrosive effect can be significantly reduced.

2. Wear a laboratory coat: When working with hydrochloric acid in the laboratory it is always advised to wear a laboratory suit so as to ensure a minimal amount of harm in case of an accident or spillage with the acid.

3. Wear a face shield: It is also important that a face shield is worn while working with the acid to prevent contact with the eyes.

4. Wear a protective rubber glove: The rubber gloves would ensure that there is minimal contact of the acid with the hands.

Three steps to be taken in case of an accidental exposure include;

1. Medical Attention: In serious cases, such as in a case of ingesting the acid, urgent medical help should be sought for immediately.

2. Water: If there is contact with the skin or eye, a lot of water should be used on the affected area, and then medical help obtained.

3. Inhalation of fresh air: In a case whereby the hydrochloric acid was inhaled for a long time, the affected person should try to get some fresh air and if other effects are noticed, urgent medical attention should be gotten.

3 0
3 years ago
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