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3 years ago

8.8 Why do esters with higher molecular mass not have strong fragrances?

Chemistry

1 answer:

Lerok [7]3 years ago

3 0

Answer:

Basically, fragrances reach other person through sense of smell. So, the strength of the fragrances depends a lot on its evaporation, which is strongly related to the boiling point. Esters with higher molecular weight do not have a strong fragrance because it has a higher boiling point.

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What is the center of the atom called?

AnnZ [28]

Answer:

nucleus

Explanation:

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2 years ago

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Which fraction contains the largest molecules? A) diesel B)gasoline C)kerosene?

OLga [1]

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2 years ago

Which parameter is indicative of how far and in what direction a reaction will progress?

nekit [7.7K]

Answer:

Option b, The change in free energy of the reaction (ΔG)

Explanation:

Gibbs free energy is a measure of amount of usable energy in the system.

It is related with enthalpy (H), entropy (S) and temprature (T) as:

G = H - TS

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If ΔG is positive, then reaction is non-spontaneous that means reaction is moving in backward direction.

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3 years ago

Should a homeowner expect more caco3 buildup in hot water pipes or cold water pipes

Arturiano [62]

Answer:
CaCO₃ built up in hot water pipes

Explanation:

The hardness of water is classified as;

Permanent Hard Water:
In this the mineral content cannot be removed by boiling. This water contains mainly following,

Calcium Sulfate CaSO₄

Calcium Chloride CaCl₂

Magnesium Sulfate MgSO₄

Magnesium Chloride MgCl₂

These salts does not precipitate out on heating water.

Temporary Hard Water:
In this water the mineral content can be removed by boiling. This water contains mainly following,

Calcium Bicarbonate Ca(HCO₃)₂

Calcium Carbonate CaCO₃

Magnesium Bicarbonate Mg(HCO₃)₂

Magnesium Carbonate MgCO₃

These salts does not precipitate out on heating water. i.e.

Ca(HCO₃)₂ -------heat------> CaCO₃ + CO₂ + H₂O

The CaCO₃ are formed in the form of scales.

Result:
Hence, we can say that that CaCO₃ built up in hot water pipes.

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2 years ago

How many moles of aluminum are needed to react completely with 1.2 mol of feo

Lelu [443]

Answer:

0.80 mol Al

Explanation:

1) Word reaction:

Aluminum + ferrous oxide → aluminum oxide + iron

This is a single replacement reaction, in which aluminum, a more acitve metal than iron, replaces the iron in the ferrous oxide to form aluminum oxide and iron.

2) Skeleton chemical equation:

Al + FeO → Al₂O₃ + Fe

3) Balanced chemical equation:

Add the coeffcients to comply with the law of conservation of mass:

2Al + 3FeO → Al₂O₃ + 3Fe

4) Mole ratio of Al and FeO:

2 mol Al : 3 mol FeO

5) Set a proportion with the unkown and solve:

x / 1.2 mol FeO = 2 mol Al / 3 mol FeO

x = 1.2 mol FeO × 2 mol Al / 3 mol FeO = 0.80 mol Al ← answer

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3 years ago

8.8 Why do esters with higher molecular mass not have strong fragrances?​

8.8 Why do esters with higher molecular mass not have strong fragrances?