Calculate the vapor pressure (in torr) of a 35°C solution of ethanol and propanol where the mole fraction of propanol is .75. Assume Ideal behavior P°ethanol35=100torr P°propanol35=36torr

Answers

Answer 1

The vapor pressure (in torr) of a 35°C solution : 52 torr

Further explanation

Given

x propanol = 0.75

P°ethanol=100 torr

P°propanol=36 torr

Required

the vapor pressure

Solution

Raoult's Law

P solution = xA.P°A +xB.P°B

x ethanol = 1- 0.75 = 0.25

Input the value :

P solution = 0.25 x 100 + 0.75 x 36

P solution = 25 + 27

P solution = 52 torr


Related Questions

7. Although carbon's three isotopes are carbon-12, carbon-13, and carbon-14, its
average atomic mass is 12.01 because

A. carbon-12 is the heaviest isotope.

B. carbon-12 is most useful to humans.

C. carbon-12 is the most common isotope.

Answers

Answer:

B

Explanation:

carbon 12 is most useful to humans

which type of cell is shown in the diagram - a plant cell, a yeast cell or a bacterial cell

Answers

Answer:

bacterial cell plant cells dont have a tail

Explanation:

The type of cell shown in the diagram is the bacterial cell as plant cell do not have tails while bacteria have tail.

Bacteria are prokaryotic unicellular organisms. They have a relatively simple cell structure compared to eukaryotic cells. They also do not possess any membrane-bound organelles such as a nucleus. However, do they possess genetic material (DNA or RNA) in the intracellular space called the nucleoid.

Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes. Prokaryotes are the dominant living creatures on Earth, having been present for perhaps three-quarters of Earth history and having adapted to almost all available ecological habitats.

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Rank the following compounds from weakest intermolecular forces to strongest. Justify your answers.
H2S I2 N2 H2O

Answers

Answer:

N2-non polar<i2< H2s-polar<H2o-polar

Explanation:

How many moles of NaCl are in 2.35 liters of a 4.67 M solution?

Answers

There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

HOW TO CALCULATE NUMBER OF MOLES:The number of moles of a substance can be calculated by multiplying the molarity by the volume. That is;

no. of moles = volume × molarity

According to this question, there are 2.35 liters of a 4.67 M solution. The number of moles is calculated as follows:

no of moles = 2.35L × 4.67M

no of moles = 10.97mol

Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

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Brainiest:):):):):):)

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Answer:

1) Condensation

2) Temperature

3) Evaporation

4) Kinetic Energy

5) Sublimation

6) Thermal Energy

which part of the plant you think is the least important?

Answers

Answer:

Well maybe the pedals they don't help much

Explanation:

Answer:

brainliest please

Explanation:

the pollen probably because other plants have it

Does anyone know this?

Answers

Answer:

Not balanced. There are different number of atoms on each side of equation.

Explanation:

Given balanced chemical equation:

Chemical equation:

3C₂H₄ + 3O₂    →       4CO₂ + 6H₂O

The equation is not balanced because  umber of moles of C, H and O are not balanced. It consist of six moles of C, 12 moles of H and six moles of oxygen on left side of equation while on right side there are 4 moles of C fourteen moles of oxygen and twelve moles of hydrogen present.

Balanced chemical equation:

C₂H₄ + 3O₂    →       2CO₂ + 2H₂O

Now the equation became balanced. There are two moles of carbon, four moles of hydrogen and six moles of oxygen are present on both side of equation.

bro needs help

32.5 grams of NaOH reacts with an excess of CO2

2NaOH(s) + CO2(g) ⇒ Na2CO3(s) + H20

What is the theoretical yield of Na2CO3 in grams?

*** I NEED YOU TO SHOW YOUR WORK BROS, I ALREADY HAVE THE ANSWER (43.1g) ***

Answers

i tried and got 6.89g of Na2CO3

What types of inputs and outputs do these cell systems share

Answers

Answer:

The inputs of cellular respiration are glucose and oxygen. The outputs of cellular respiration are water, carbon dioxide

The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.

What is a cell ?

The smallest unit that can sustain life on its own and makes up all living things, including the body's tissues. The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell. The chemicals that enter and leave the cell are governed by the cell membrane, which encloses the cell.

The cell membrane, the nucleus, and the cytoplasm are the three components that make up a cell. Intricate arrangements of microscopic fibers and hundreds or even thousands of tiny, unique structures known as organelles can be found in the cytoplasm.

The system's inputs are the signals or data it receives, and its outputs are the signals or data it sends. As part of an activity, the phrase can also be employed; for example, to "perform I/O" is to carry out an input or output operation.

Thus, The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.

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There have been made 2 attempts of oxygen production by potassium permanganate.In the first attempt they have got 75ml oxygen in 3 minutes whearas there have been got 100ml in 5 minutes by the 2nd attempt.In what case the speed of the oxygen production is bigger???
Pls explain your answer

Answers

Answer:

The speed of oxygen production is bigger in the first attempt.

Explanation:

In the first attempt, since 75ml oxygen is produced in 3 minutes, the rate of oxygen production is r = volume of oxygen/time = 75 ml/3 min = 25 ml//min

In the second attempt, since 100ml oxygen is produced in 5 minutes, the rate of oxygen production is r' = volume of oxygen/time = 100 ml/5 min = 20 ml//min

Since r = 25 ml/min > r' = 20 ml/min, the speed of oxygen production is bigger in the first attempt.

Explain how Newton’s cradle demonstrates the law of conservation of energy.

Answers

When power goes up it must come down.

Explain whether smoke filling up a room is diffusion or not.​

Answers

Answer:

It is diffusion

Explanation:

Diffusion occurs when particles move from relatively high concentration to relatively low

Answer:

it is diffusion

Explanation:

smoke rises from one corner of the room and spreads to the rest of the room, resulting in diffusion

Please help

How do Newton's lawd describe the motion of an object?​

Answers

Newton’s laws of motion relate an objects motion to the forces acting on it , in the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact , they apply forces to each other of equal magnitude and opposite direction

CAN SOMEONE HELP I WILL GIVE BRAINLIST PLEASE!

Answers

Answer:

water, wind, ice, gravity

Explanation:

1. Multiple Choice
How does altitude affect climate?
A.
The higher the altitude, the colder the climate will be.

B.
The lower the altitude, the colder the climate will be.

C.
The higher the altitude, the hotter the climate will be.****

D. Altitude is not related to climate.

2. How does latitude affect climate?
A.
Areas near the equator have cooler climates than areas far from the equator.

B.
Areas near the equator have warmer climates than areas far from the equator.

C.
Areas near the equator have four seasons.****

D.
Areas near the equator do not have any type of precipitation.

3. How does wind affect precipitation?
A.
Wind does not have any effect on precipitation.

B.
Winds that blow from over the land contain a lot of water vapor that will cause precipitation.****

C.
Winds that blow inland from oceans or large lakes contain very little water vapor that will cause precipitation.

D. Winds that blow inland from oceans or large lakes contain a lot of water vapor that will cause precipitation.

4. Sea and land breezes over a large region that change direction with the seasons are called
A.
windward.

B.
leeward.

C.
monsoons.****

D. storms.

(****= my answer)

plz cheak my answers!?

Answers

Answer:

#1 A

#2 B

#3 C

#4 c

Explanation:

#1 can give reference to a mountain the higher the altitude the colder it will get

#2 talking about climate not seasons per say. focus on climate answers

#3 wind carry moisture from the sea on to land which cause precipitation

#4 Monsoons is correct

7. True or false. Where air masses collide, weather changes

Answers

Answer:true

Explanation:

Element X has three electrons in its outermost orbit.
Element Y has seven electrons in its outermost orbit.

What is the chemical formula of the ionic compound
formed by these elements when they react together?
(Use X and Y as the chemical symbols.)

PLEASE SOMEONE EXPLAIN THIS IN DETAIL

Answers

Explanation:

element x _ carbon having two shells 2,3

element y _ fluorine atomic no 9 EC 2,7

when carbon react with fluorine it destroyes graphite and form fluorocarbons and thus form covalent bond

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Answer: atomic nucleus

Explanation:

How many atoms are in 4.3 moles of lithium?

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25.88 atoms of 10^23

If the Earth could no longer sustain human life, where could we go?

Answers

Answer:

There is no place in the solar system that can sustain humans except earth. Earth is the only planet that can sustain humans according to what we know and according to the technologies we have. We can live in Mars but the environment might not be suitable for growing vegetation and it might be hard for humans to live in Mars.

Explanation:

Hope this helped!

We could live on Mars since it’s most habitable since the temperature isn’t harmful and it has water

18. How is the kinetic energy of molecules changing when the molecules move faster?
The kinetic energy ...
a
is not changing
b
depends on the molecules.
С
is decreasing.'
d
is increasing
Scroll for more

Answers

Answer:

d

Explanation:

the more movement the more energy

does a high melting point mean the substance will melt faster or slower?

Answers

Answer:

slower...............

.

..

Answer:

it'll melt slower

Explanation:

because it needs to get to a higher temperature ig

can the element calcium be found in more than one state of matter?

Answers

Answer:

No

Explanation:

The element calcium be found in more than one state of matter ( Only in Solid state )

#HopeItHelps

If the temperature of a gas in a balloon remains constant but the pressure
is decreased, the volume of the balloon will
decrease
increase
remain the same
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Answers

Answer:

increase

Explanation:

if the pressure goes down then the gas will spread out more, meaning the volume will increase

What does the difference in force depend on?

Answers

This law is further given to mean that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the

PLEASEEE HELP ASAPPPPP

Answers

Answer: answer A

Explanation: because it gives more detail and a summarizations

If a substance is a bad conductor as a solid, but a good conductor as a liquid or when dissolved into water, which type of bond is holding the compound together?

Answers

an ionic bond. covalent bonds do not conduct in a solid or a liquid state, ionic bonds conduct in a liquid state and not in a solid state.

The bond type in the substance is ionic bonding because, ionic compounds in their solid state are not conducting but the ions they furnish when dissolved in water conducts electricity.

What are ionic compounds ?

Ionic compounds are formed between metals and nonmetals. Metals are electropositive and they can easily loss electrons to from cations. Metals donate electrons to the electron deficient non metals to achieve octet.

Ionic bonding is a strong electrostatic force between opposite charged ions. Hence this bond is stronger than other types of bond. This intact bonding make them bad conductors in the solid state.

However they are electrically conducting the molten state or when dissolved in water due to the presence of free ions and electrons in the solution.

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Which type of force is the magnet using to move the nail?
A nail moving towards a magnet
A) Friction
B) Gravity
C) Pull
D) Push

Answers

Answer:

a

Explanation:

Answer:

Explanation:

gravity

According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas

Answers

Explanation:

an ideal gas moves in constant, rapid motion

In an exothermic reaction, chemical energy is converted to

1.thermal
2. mechanical

Answers

Answer:

thermal, I'm not 100% sure though.

Thermal. As the definition of a exothermic relation is any reaction that release heat. Remember that it’s in the word exo-“thermic”
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