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Tatiana [17]
3 years ago
14

PLEASE HELP ME!!!!!!!!!!

Chemistry
1 answer:
frosja888 [35]3 years ago
6 0

Answer:

hopefully that helps

Explanation:

-24

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Atomic absorption spectroscopy was used to determine the amount of aluminum in a sample of sunscreen. A blank solution was measu
Pepsi [2]

Answer:

LOD = 0,0177

LOQ = 0,0345

Explanation:

Detection limit (LOD) is defined as the lowest signal which, with a stated probability, can be distinguished from a suitable blank signal. In the same way, quantification limit (LOQ) is defined as the lowest analyte concentration that can be quantitatively detected with a stated accuracy and precision.

There are many formulas but the most used are:

LOD = X + 3σ

LOQ = X + 10σ

Where X is average and σ is standard desvation

For the blanks readings the average X is 0,0105 and σ is 0,0024

Thus:

<em>LOD = 0,0177</em>

<em>LOQ = 0,0345</em>

I hope it helps!

3 0
3 years ago
What are the two parts of a solution?
Vlad [161]
The 2 parts or components that make up a solution would be the solute and the solvent.
6 0
3 years ago
8. Which of the following compounds is an ionic compound? (metal)
fomenos
The answer is b, because all of the other compounds are covelent
6 0
3 years ago
Read 2 more answers
Study this chemical reaction: (aq)(s)(s)(aq) Then, write balanced half-reactions describing the oxidation and reduction that hap
disa [49]

The question is incomplete, complete question is:

Study this chemical reaction:

FeSO_4 (aq) + Zn (s)\rightarrow Fe (s) + ZnSO_4 (aq)

Then, write balanced half-reactions describing the oxidation and reduction that happen in this reaction.

Oxidation:

Reduction:

Answer:

Oxidation taking place in given reaction :

Zn(s)\rightarrow Zn^{2+}+2e^-

Reduction taking place in given reaction;

Fe^{2+}(aq)+2e^-\rightarrow Fe(s)

Explanation:

Redox reaction is defined as the reaction in which oxidation and reduction reaction occur side by side.

Oxidation reaction is defined as the chemical reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.

X\rightarrow X^{n+}+ne^-

Reduction reaction is defined as the chemical reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

X^{n+}+ne^-\rightarrow X

FeSO_4 (aq) + Zn (s) \rightarrow Fe (s) + ZnSO_4 (aq)

In the given reaction, iron(II) ions are getting reduced and zinc metal is getting oxidized to zinc(II) ions.

Oxidation :

Zn(s)\rightarrow Zn^{2+}+2e^-

Reduction ;

Fe^{2+}(aq)+2e^-\rightarrow Fe(s)

6 0
3 years ago
How to convert n butylbenzene to benzoic acid​
Pavlova-9 [17]

<u>Answer:</u>

<u>When an alkyl benzene is heated with strong oxidizing asgents like acidic or alkline KMnO4</u>

<u> or acidified K2Cr2O7</u>

<u>, etc. gives aromatic carboxyllic acid. The alkyl side chain gets oxidised to −COOH</u>

<u> group irrespective of the size of the chain.</u>

Explanation:

4 0
3 years ago
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