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ICE Princess25 [194]
3 years ago
5

Name the reagent if any that you would add to a solution of cobalt iii chloride

Chemistry
1 answer:
allochka39001 [22]3 years ago
4 0

Answer:

Concentrated hydrochloric acid

Explanation:

The solution turns from its original pink colour to a dark rich blue.

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Some commercially available algaecides for swimming pools claim to contain 7% copper. Could the method used in this experiment t
AleksandrR [38]

Answer:

Explanation:

  1. 7% copper implies 7 w/v%(weight/volume %) of copper. This implies a 100 mL algaecide arrangement contains 7 grams of copper.  
  2. Henceforth we have a thought of the measure of copper that ought to be available in a given example of algaecide.  
  3. Indeed, even a 1 mL algaecide test is sufficient to discover the percentage of copper in it.  
  4. so a 25mL sample of algaecide must have around 1.75g of copper.
4 0
3 years ago
Which of the following is least likely to increase the rate of diffusion?A small concentration gradientB higher concentration of
Ksenya-84 [330]

Answer: Option (A) is the correct answer.

Explanation:

Rate of diffusion is defined as the total movement of molecules from a region of higher concentration to lower concentration.

The interaction between medium and the material is responsible for the rate of diffusion of a material or substance.

A small concentration gradient means small difference in the number of molecules taking part in a reaction. So, when there no large difference between the concentration then there won't be much difference in the rate of diffusion of a material.

Whereas a higher concentration of molecules will lead to more number of collisions due to which frequency of molecules increases. Therefore, rate of diffusion will also increase.

Small molecule size will also lead to increases in rate of diffusion. This is because according to Graham's law rate of diffusion is inversely proportional to molar mass of an element. Hence, smaller size molecule will have smaller mass. As a result, rate of diffusion will be more.

High temperature means more kinetic energy of molecules due to which more number of collisions will be there. Hence, rate of diffusion will also increase.

Thus, we can conclude that out of the given options a small concentration gradient  is least likely to increase the rate of diffusion.

4 0
2 years ago
when the concentration of hydrogen ions in a solution is decreased by a factor of ten, the pH of the solution
Vladimir [108]

Answer:

Increases by 1

Explanation:

8 0
3 years ago
When scientists looked at the polarity of bands of rock on either side of the mid-ocean ridges, what did they find? A. that ther
alisha [4.7K]
I am pretty sure the answer is D. That the patterns of a polarity matched up on both sides.
3 0
2 years ago
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Draw a schematic diagram of a circuit with an output device, a energy source and a controller.
mart [117]

Answer:

ch∪pαpi munαn0?

Explanation:

8 0
2 years ago
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