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Citrus2011 [14]
3 years ago
10

5. If you evaluated 5 solvents as possible recystallization solvents do you think it is generally true that the solvent which ap

pears to dissolve the solute is always the best choice? What about a solvent that does not appear to dissolve the solute at all, should if automatically be eliminated as a potential recrystallization solvent? Give a brief explanation for your reasoning for both the most and least soluble solvent-solute combination of the five solvents.
Chemistry
1 answer:
vesna_86 [32]3 years ago
4 0

Answer:

impurities

Explanation:

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Water (2850 g ) is heated until it just begins to boil. If the water absorbs 5.53×105 j of heat in the process, what was the ini
NARA [144]

Answer is 54 °C.

<em>Explanation;</em>

We can simply use heat equation

Q = mcΔT  

 Where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

Let's assume that the initial temperature is T.

Q = 5.53 × 10⁵ J

m = 2850 g

c = 4.186 J/g °C

ΔT = (100 - T)  °C     <em>Since the water is boiling, the final temperature is 100 °C.</em>

By applying the equation,

5.53 × 10⁵ J  = 2850 g  x 4.186 J/g °C  x (100 - T)  °C

(100 - T)  °C = 5.53 × 10⁵ J  / (2850 g  x 4.186 J/g °C  )

(100 - T)  °C = 46.35 °C

         T        = 100 - 46.35 C = 53.65 °C

                   ≈ 54 °C

7 0
4 years ago
PLS ANSWER ASAP
Kazeer [188]
The answer is c this is the answer
7 0
3 years ago
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What does the pH of a solution have to be in order to be a base?
VMariaS [17]

Explanation:

pH is used to measure the concentration of H+ ions ([H+]) and therefore, whether a substance is acidic or basic (alkaline). Solutions with a pH of less than seven are acidic, while those with a pH greater than seven are basic (alkaline).

8 0
4 years ago
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Question 1 (2 points)
Anettt [7]

Answer:

I didn't KNOW WHAT IS THE ANSWWR OF YOUR QUISTION IM SO SORRY

Explanation:

I WANT TO INTRODUCE SELF TO YOU CAN I

4 0
3 years ago
If 2.0 ml of 6.0m hcl is used to make a 500.0-ml aqueous solution, what is the molarity of the dilute solution?
svp [43]
Make sure that you understand what they are asking you from this question, as it can be confusing, but the solution is quite simple. They are stating that they want you to calculate the final concentration of 6.0M HCl once a dilution has been made from 2.0 mL to 500.0 mL. They have given us three values, the initial concentration, initial volume and the final volume. So, we are able to employ the following equation:

C1V1 = C2V2
(6.0M)(2.0mL) = C2(500.0mL)
Therefore, the final concentration, C2 = 0.024M.
4 0
3 years ago
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