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wel
3 years ago
10

The following data were obtained for a complex of nickel at 575 nm in a 1.00 cm cell. Using Microsoft Excel or some other graphi

ng program, construct a calibration plot and accurately calculate the molar absorptivity (ε) for the nickel-complex at 575 nm.
Standard # Nickel Complex Concentration (M) Absorbance
1 0.01 0.058
2 0.02 0.109
3 0.04 0.220
4 0.06 0.328

A. 0.184 M-1cm-1

B. 0.002 M-1cm-1

C. 5.425 M-1cm-1

D. Not Enough Information to Determine

Chemistry
1 answer:
kipiarov [429]3 years ago
7 0

Answer:

Check the explanation

Explanation:

It is basically known that the change in complex compositions of metal play a vital role in the conduction of molecular materials, which display atypical magnetic properties and conducting which also finds applicability in material chemistry, supramolecular and biochemistry, The electrochemical conduct of the nickel Ni(II) complexes was investigated in DMSO by cyclic voltammetry (CV), rotating coulometry and disc electrode (RDE).

The solution to the question above can be seen in the attached image below

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Answer:

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Explanation:

Given parameters:

Mass of ice  = 100g

Unknown:

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Solution:

This is a phase change process from solid to liquid. In this case, the latent heat of melting of ice is 3.33 x 10⁵ J/kg.

 So;

            H  = mL

m is the mass

L is the latent heat of melting ice

  Now, insert the parameters and solve;

            H = mL

 mass from gram to kilogram;

            100g gives 0.1kg

  H = 0.1 x 3.33 x 10⁵ = 33300J

8 0
3 years ago
Which of the following best describes a metal? Brittle, shiny, and solid Brittle, dull, and low density Malleable, shiny, and ab
yanalaym [24]

Answer : The correct option is, Malleable, shiny, and able to conduct heat or electricity.

Explanation:

Metals : Metals are the elements which can easily loose electrons and forms cations.

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Non-metals : Non-metals are the elements which can easily gain electrons and form an anion.

Properties of non-metals :

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Hence, from the given options the correct option for metal is, Malleable, shiny, and able to conduct heat or electricity.

8 0
3 years ago
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podryga [215]

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Hence, moving from top to bottom along the group the number of shells increases. And with increase in number of shell the atomic or ionic radii increases. As Oxygen is present at the top of the group, therefore, it has the smallest radius due to less number of shells.

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