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EleoNora [17]
3 years ago
12

A pure compound is found to be 40.0% carbon by mass, 6.73% hydrogen by mass, and 53.3% oxygen by mass. determine the empirical f

ormula of the compound. be sure to show your work.
Chemistry
1 answer:
ratelena [41]3 years ago
3 0
Since there is no weight, I would assume that this is a 100g of pure compound.
Okay so I would be changing the percentage to gram to solve for the mole.
So
40.0g C (1 mol C/12.01 g C) = 3.33 mol C
6.73g H (1 mol H/1.01 g H ) = 6.66 mol H
53.3g O (1 mol O/16.00 g O) = 3.33 mol O

With that, two of our moles is 3.33, so we consider that are our 1, as it is also the lowest. Therefore the empirical formula is CH2O
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AVprozaik [17]
<h2>D) 46.07 g/mol</h2>

The molar mass is given by the sum of the atomic masses of the component elements of the substance.

In our case, the substance is ethanol or C₂H₅OH.

A_C=12.011

A_H=1.0079

A_O=15.9994

\mathcal M_{C_2H_5OH} = 2 \times A_C + 6 \times A_H + A_O = 2 \times 12.011 + 6 \times 1.00079+ 15.999 4= 24.022 + 6.0474 + 15.9994= 46.069≈ \boxed{46.07 \dfrac{g}{mol}}

5 0
3 years ago
Arachidonic acid and pge1 are both carboxylic acids with atoms. the differences are that arachidonic acid contains and no other
hichkok12 [17]
Answer:
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Structures of Both Arachidonic Acid and PGE</span>₁ are shown Below,

8 0
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Structure can affect the Ka values for related acids. In the boxes below, draw the complete Lewis structure for a single ion of
Zigmanuir [339]

Answer:

Explanation: see attachment below

8 0
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xenn [34]
It is A)The smallest unit of Ne 

5 0
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A solution containing equal numbers of hydrogen ions and hydroxide ions is
igor_vitrenko [27]

Answer:

The answer to your question is: Neutral

Explanation:

A neutral solution is a solution whose pH is 7.

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Examples of neutral solutions:

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- sugar solution

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4 0
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