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Alekssandra [29.7K]
3 years ago
10

A sample of an unknown compound has a percent composition of 52.14% carbon, 13.13% hydrogen, and 34.73% oxygen. Which compounds

could the sample be?
CH3CH3CH2O2
C2H5OH
C4H10O2
C4H12O2
CH3CH3CH2OOH
Chemistry
2 answers:
tamaranim1 [39]3 years ago
4 0

Answer:

1.elements: carbon. hydrogen. oxygen

2.percentage: 52.14. 13.13. 34.73

3.Number of :

moles, you 4.345. 13.13 2.171

divide the

% with mass

number.

4.mole ratio, : 2 6 1

you divide

with the

list number

of moles

throughout.

5.The formula C2H5OH

of the sample:

Explanation:

Just follow the steps above are well explained ,thank

Iteru [2.4K]3 years ago
3 0

Answer:

C4H12O2

Explanation:

Molar mass of Carbon=12

Molar mass of Hydrogen =1

Molar mass of Oxygen = 16

C H O

52.14/12 13.13/1 34.73/16

4.345/2.17 13.13/2.17 2.17/2.17

2 6 1

C2H6O

(C2H6O)2

C4H12O2

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Answer:

Q=0.840

Explanation:

Hello,

In this case, since the given undergoing chemical reaction is correctly balanced, the reaction quotient is computed as well as the equilibrium constant but in terms of the given concentrations that are:

C_{C}=\frac{5.25mol}{3.00L} =1.75M\\C_{H_2O}=\frac{12.2mol}{3.00L} =4.07M\\C_{CO}=\frac{3.90mol}{3.00L}=1.30M\\C_{H_2}=\frac{7.90mol}{3.00L} =2.63M

In such a way, the reaction quotient turns out:

Q=\frac{C_{CO}C_{H_2}}{C_{H_2O}}=\frac{1.30M*2.63M}{4.07M}\\ Q=0.840

Taking into account that carbon is not included since it is solid.

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10. Lead nitrate solution mixed with sodium sulfate solution forms lead sulfate as a
Leviafan [203]

Answer:

88%.

Explanation:

The percentage yield of lead sulfate in this experiment is 88% if 2.53 is divided by 2.85 and multiply by 100. The percentage yield can be calculated when the experimental yield is divided by theoretical yield and then multiply by 100. The percentage yield tells us about the actual yield that is gained in the end of experiment which is lower than theoretical yield.

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An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressu
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3 years ago
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Which best characterizes a crystal
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<h3><u>Answer;</u></h3>

A dense substance that is hard and incompressible

<h3><u>Explanation</u>;</h3>
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  • Examples of crystals include<em><u> quartz,</u></em> that is made up of silicon (iV) oxide molecules that are arranged in a lattice,<u><em>table salt</em></u> is another example that is made up of sodium and chloride ions that are arranged in a lattice
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Usually potassium hydrogen phthalate is kept very pure. But Stu Dent thinks the bottle of potassium hydrogen phthalate has been
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Answer:

1.784 g

Explanation:

The equation of the reaction is;

NaOH(aq) + KHC8H4O4(aq) --------> KNaC8H4O4(aq) + H2O(l)

Number of moles of NaOH reacted = 17.47/1000 * 0.5000 M

Number of moles of NaOH reacted =8.735 * 10^-3 moles

From the reaction equation;

1 mole of NaOH reacted with 1 mole of KHC8H4O4

Hence, 8.735 * 10^-3 moles of NaOH reacts with 8.735 * 10^-3 moles of KHP.

So,

Mass of KHP reacted = 8.735 * 10^-3 moles * 204.2 g/mol = 1.784 g

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