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2 years ago

Which factor has the least effect on the rate of solution of a solid in a liquid?

Chemistry

2 answers:

vitfil [10]2 years ago

4 0

The pressure will not affect the rate of solution.

ziro4ka [17]2 years ago

3 0

Answer: Option (c) is the correct answer.

Explanation:

Since, the substance added is a solid and particles of a solid are very closely held to each other because of strong intermolecular forces of attraction between them.

This makes them to have a definite shape and volume. Therefore, when pressure is applied on a solid then its particles will be least affected by it as they are already close to each other.

Whereas stirring, amount of surface area, and temperature will equally affect the rate of dissolution of the solid.

Hence, we can conclude that pressure is the factor that has least effect on the rate of solution of a solid in a liquid.

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Howtocalculatethevolumeofcarbondioxideproducedwhen400gofmarblewereats.t.p

lys-0071 [83]

Answer:

so 0.15 moles X 22.4 dm3/mole=3.36 dm3. Next we find the moles of hexane combusted, and then the moles of CO2. Finally, we find the volume of CO2 using the fact that at STP, 1 mole of gas = 22.4 dm3.

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2 years ago

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the

Ipatiy [6.2K]

P1V1/T1=P2V2/T2 P2=1/2 P1 V1=1 T1=298K

1 P1/298= (1/2) P1V2/373 cross P1

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3 years ago

the vapor pressure of a naqueous solution is found to be 24.9 mmgh at 25C. what is the mole fraction of solute in this solution?

Gekata [30.6K]

Answer:

Mole fraction of solute is 0.0462

Explanation:

To solve this we use the colligative property of lowering vapor pressure.

First of all, we search for vapor pressure of pure water at 25°C = 23.8 Torr

Now, we convert the Torr to mmHg. Ratio is 1:1, so 23.8 Torr is 23.8 mmHg.

Formula for lowering vapor pressure is:

ΔP = P° . Xm

Where ΔP = P' (Vapor pressure of solution) - P° (Vapor pressure of pure solvent)

Xm = mole fraction

24.9 mmHg - 23.8 mmHg = 23mmHg . Xm

Xm = (24.9 mmHg - 23.8 mmHg) / 23mmHg

Xm = 0.0462

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2 years ago

Modify the given fatty acid so that it represents the 18‑carbon fatty acid designated 18:2(Δ9,12). Draw any double bonds in the

Mekhanik [1.2K]

Answer:

See explanation

Explanation:

In this case, we have to remember the meaning of the nomenclature "18:2Δ9,12". Where 18 is the number of carbon atoms, 2 is the number of double bonds, and the numbers successive to Δ "delta" the position of the double bonds starting to count from the carboxylic -COOH end of the molecule.

In other words, the main functional group is a carboxylic acid. We have a total of 18 carbons. Additionally, we have 2 double bonds. On carbons 9 and 12.

Lets see figure 1

I hope it helps!

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2 years ago

Which element would be expected to have a similar physical and chemical properties as oxygen, and why?

soldi70 [24.7K]

Oxygen and Sulfur are in the same group.

Sulfur is the next element in the group, and it reacts with hydrogen gas (H2) in a manner similar to oxygen.

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2 years ago