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valentinak56 [21]

2 years ago

11

Describe the five steps to the procedure called elemental analysis.

1 answer:

alexdok [17]2 years ago

4 0

Answer:

on the successful completion of a number of different steps: planning (identifying the most appropriate analytical procedure), sample selection, sample preparation, performance of analytical procedure, statistical analysis

Explanation:

hope it helps

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(a) what is the approximate ductility (%el) of a brass that has a yield strength of 230 mpa (33360 psi)?

ss7ja [257]

Based on the calculations, the approximate ductility (%el) of this brass is equal to 2.3%.

<u>Given the following data:</u>

Yield strength = 230 mpa (33360 psi).

<h3>What is ductility?</h3>

Ductility can be defined as an important property of a material which determines its ability to become elongated due to the application of stress.

Mathematically, the ductility of a material can be expressed as percentage elongation in length:

$\% el = \frac{\Delta L}{L_i} =\frac{L_f - L_i}{L_i}$

<u>Where:</u>

$L_i$ is the original length.

$L_f$ is the final length.

$\Delta L$ is the yield strength.

For this exercise, let us assume the original length of this brass is equal to 100 meters.

Substituting the parameters into the formula, we have;

$\% el = \frac{230}{100}$

Ductility = 2.3%.

Read more on ductility here: brainly.com/question/828860

3 0

2 years ago

The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell

tankabanditka [31]

Explanation:

In a voltaic cell, oxidation reaction occurs at anode whereas reduction reaction occurs at the cathode.

Hence, the half-cell reaction taking place at anode and cathode will be as follows.

At anode (Oxidation) : $Cr(s) \rightarrow Cr^{3+}(aq) + 3e^{-}$ ...... (1)

At cathode (Reduction) : $Ag^{+}(aq) + 1e^{-} \rightarrow Ag(s)$

So, in order to balance the half cell reactions, we multiply reduction reaction by 3. Hence, reduction reaction equation will be as follows.

$3Ag^{+}(aq) + 3e^{-} \rightarrow 3Ag(s)$ ........ (2)

Therefore, overall reaction will be sum of equations as (1) + (2). Thus, net reaction equation is as follows.

$Cr(s) 3Ag^{+}(aq) \rightarrow Cr^{3+}(aq) + 3Ag(s)$

6 0

3 years ago

The chemical symbol of sodium is<br>

ivolga24 [154]

Answer:

Na

Explanation:

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3 years ago

The following chemical equation is not balanced: Al + CuO Al2O3 + Cu When this chemical equation is correctly balanced, what is

Sergio039 [100]

2Al + 3CuO ----> Al2O3 + 3Cu

So the answer is 3

8 0

3 years ago

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Is Calcium oxide (CaO) covalent or ionic?

Paul [167]

Answer:

Calcium oxide （CaO）is ionic.

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3 years ago

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