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3 years ago

What does Raoult's law state?

2 answers:

4 0

Correct Answer is A: The vapor pressure of a pure solvent is higher than that of a solution containing that solvent.

Reason
According to Raoult's Law states that vapor pressure of each component in the solution is equal to the vapor pressure of the pure component multiplied by its mole fraction. It is mathematically expressed as
P = X $P^{0}$
where, P = vapor pressure of solution
X = mole fraction of solute
P^{0} [/tex] = vapor pressure of pure component

Here X is always less than one (in solutions)

∴ P < P^{0} [/tex]

natali 33 [55]3 years ago

4 0

Raoult's law states That the vapor pressure of a pure solvent is higher than that of a solution containing that solvent. This is a law of thermodynamics established by French chemist François-Marie Raoultin in 1887. This shows that partial vapor pressure is equal to the vapour pressure.

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miss Akunina [59]

Answer:

Just show them their place.

Explanation:

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3 years ago

26.6 mL of 2.50 M stock solution of sucrose is diluted to 50.0 mL. A 16.0 mL sample of the resulting solution is then diluted to

frozen [14]

Answer:

In the final solution, the concentration of sucrose is 0.126 M

Explanation:

Hi there!

The number of moles of solute in the volume taken from the more concentrated solution will be equal to the number of moles of solute in the diluted solution. Then, the concentration of the first solution can be calculated using the following equation:

Ci · Vi = Cf · Vf

Where:

Ci = concentration of the original solution

Vi = volume of the solution taken to prepare the more diluted solution.

Cf = concentration of the more diluted solution.

Vf = volume of the more diluted solution.

For the first dillution:

26.6 ml · 2.50 M = 50.0 ml · Cf

Cf = 26.6 ml · 2.50 M / 50.0 ml

Cf = 1.33 M

For the second dilution:

16.0 ml · 1.33 M = 45.0 ml · Cf

Cf = 16.0 ml · 1.33 M / 45.0 ml

Cf = 0.473 M

For the third dilution:

20.0 ml · 0.473 M = 75.0 ml · Cf

Cf = 20.0 ml · 0.473 M / 75.0 ml

Cf = 0.126 M

In the final solution, the concentration of sucrose is 0.126 M

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3 years ago

If an element has 10 protons and 11 neutrons and 10 electrons, which expression correctly identifies the element? Atomic numbers

Bezzdna [24]

Answer:

Explanation:

Firstly, it should be noted that atomic number (number of protons) determines element. And the element with the atomic number 10 (10 protons) is Neon. Hence, Neon-10 (₁₀Ne) is the answer.

Note that sodium has an atomic number of 11. Also, number of protons is usually equal to the number of electrons in neutral atoms, this is because the total number of positive particles (protons) must be equal to the total number of negative particles (electrons) to give a neutral atom.

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3 years ago

Polyatomic ion formula for aluminum hydroxide

KonstantinChe [14]

Answer:

Al(OH)3 ? i hope this is what you mean.

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3 years ago

Read 2 more answers

How do organisms that are not autotrophs get they energy they need to sustain life

polet [3.4K]

They eat autotrophs, or each other. That's how they get energy.
Hope that answered your question.

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3 years ago