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3 years ago

gasoline is separated from crude oil by heating it until it reaches it's boiling point. which separation method is used?

Chemistry

1 answer:

Orlov [11]3 years ago

4 0

Answer:

Fractional distillation

Explanation:

The separation of gasoline from crude oil by heating until it reaches its boiling point is a separation technique called fractional distillation.

It is the separation of a mixture, such as crude oil into their respective fractions.
This is achieved due to the differences in boiling point between the constituent fractions in the mixture.
As the boiling point of a fraction is reached, it distills out from the column.

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The formation constant for the following reaction is Kf = 5.6 108 at 25°C. Ni2+(aq) + 6 NH3(aq) Ni(NH3)62+(aq) (a) Determine G0

marusya05 [52]

Answer:

a. ΔG⁰ = -49.9 kJ/mol

b. The reaction proceeds towards right direction

c. ΔG = 49.5 kJ/mol

d. The reaction proceeds towards left direction

Explanation:

a. It is possible to obtain ΔG⁰ from K reaction using:

ΔG⁰ = -RT ln K

Where R is gas constant 8.314 J/molK, T is absolute temperature (273.15 +25 = 298.15K)

Replacing:

ΔG⁰ = -8.314 J/molK 298.15K ln 5.6x10⁸

ΔG⁰ = -49.9 kJ/mol

b. Reaction quotient Q, defines concentrations of substances involved in an equilibrium, when Q = Kf, the reaction is in equilibrium, when Q < Kf the reaction moves towards right direction and vice versa.

At standard-state concentrations, Q = 1, as:

Q < Kf, the reaction proceeds towards right direction

c. ΔG = ΔG⁰ + RT ln Q

Q = [Ni(NH₃)₆²⁺] / [NH₃]⁶[Ni²⁺]

Q = 0.017M / 0.0015M⁶×0.0058M

Q = 2.6x10¹⁷

ΔG = -49.9 kJ/mol + 8.314x10⁻³ kJ/molK 298.15K ln 2.6x10¹⁷

ΔG = 49.5 kJ/mol

d. As Q > Kf, the reaction proceeds towards left direction

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3 years ago

When glass is formed, which of these takes place FIRST? A) The sand turns to liquid. B) The molecules become hard. C) The sand i

otez555 [7]

I would say D and if that's not it it's A

Hope This Helps! Have A Nice Day!!

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4 years ago

Read 2 more answers

According to Graham’s law, the rate of effusion of a gas is inversely proportional to

VLD [36.1K]

C. the square root of the mass of the particles.

<h3>Further explanation </h3>

Graham's law: the rate of effusion of a gas is inversely proportional to the square root of its molar masses or

the effusion rates of two gases = the square root of the inverse of their molar masses:

$\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }$

$\rm M_1\times r_1^2=M_2\times r_2^2$

From this equation shows that the greater the mass of the gas, the smaller the effusion rate of the gas and vice versa, the smaller the mass of the gas, the greater the effusion velocity.

So if both gases are at the same temperature and pressure, the above formula can apply

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3 years ago

What do scientists do to easily share measurements data they can understand

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IF THE FIRST ONE DOESN'T WORK TRY THE SECOND

1. They use the same measuring system (metric)2. Clearly and properly collect and record data, recording the procedure and results3. Releasing the data into the public, letting everyone have access to it

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4 years ago

" what is the total positive charge the protons have together ? " how do I tell?? Please help!!!

zzz [600]

To calculate this, the first step is to determine the number of protons in each atom of the ion. You can use their atomic number to find the number of protons. If the number protons and electrons are equal there is no charge, so the next step is to determine how many electrons to add or remove to the number of protons.

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4 years ago

gasoline is separated from crude oil by heating it until it reaches it's boiling point. which separation method is used?​

gasoline is separated from crude oil by heating it until it reaches it's boiling point. which separation method is used?