Multiple choice-- 16 pts!
Two moles of aluminum chloride are dissolved in two liters of water.
How does the vapor pressure of the water change?

It increases because aluminum and chloride ions displace water molecules, which escape into the gas phase.

It first decreases as aluminum chloride attracts the water molecules, but it then increases as dissolving completes and starts to push water molecules out.

It decreases because nonvolatile aluminum and chloride ions now occupy some of the volume of the system.

Answers

Answer 1

Answer: It decreases because nonvolatile aluminum and chloride ions now occupy some of the volume of the system.

Explanation:

Vapor pressure of a liquid  is defined as the pressure exerted by the vapors  in equilibrium with the liquid/solution at a particular temperature.

So, when a non-volatile solute is added to a solvent then its molecules align at the surface of liquid. As a result, less number of solvent molecules will escape from the solution. Thus, there will be decrease in vapors and thus the vapor pressure decrease.

The relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.


Related Questions

What of these should Hailey include in her list?

Synthetic polymers are biodegradable.
Synthetic polymers are not flexible.
Synthetic polymers are recycled cheaply.
Synthetic polymers are inexpensive to produce.

Answers

Answer:

Hailey should add, they are inexpensive to produce.

Explanation:

Reason being why they are inexpensive to produce, is due to them being chemical based and easy to product in the factory setting. Which makes them extremely cheap to make.

Reason being why the others are wrong, synthetic polymers are not biodegradable as they are made in a factory with oils. Synthetic polymers are not flexible due to them being used for harder products. Synthetic polymers are not recycled cheaply as they are made with chemicals which makes it very hard to recycle.

answer:D

Explanation: i took it

What is the frequency of a light wave who has a wavelength of 5.5 x 10-14 m v

Answers

Answer:5.45×10^21

Explanation:

Use:f=c/λ

Nuestra alimentación ha empeorado tanto y la oferta de alimentos no saludables (ultraprocesados ricos en sal, grasas y azúcares) es tan amplia, que debemos hacer un esfuerzo en reaprender y reconocer los alimentos que benefician nuestra salud. ¿Qué alimentos debemos escoger para preparar un plato saludable?

Answers

Answer:

Nuestra alimentacion debe estar basada en alimentos ricos en vitaminas, minerales como las frutas verduras, legumbres  y semillas.

Explanation:

Los alimentos ultraprocesados son altos en sodio, conservantes, y pobres en vitaminas, es por eso que deben ser evitados ya que algunos hasta se consideran hasta carcinogenos.

No se descarta los compuestos quimicos ultraprocesados ricos en grasa perjudiciales para la salud ya que fomentan la formacion de placa de ateromas.

What is the energy of a radio wave whose frequency is 6.2 x 106 Hz?

Answers

Answer:

657.2 Hz

Explanation:

Differentiate between acids and bases on the basis of their pH values.

Answers

Answer:

acid; there ph value is mostly 7

base: there ph value can be more than 7 or less than 7

Answer:

The more towards 0 a pH value is, the increasingly acidic. Conversely, the more towards 14 a pH value is, the increasingly alkaline. Some examples of bases are lye, ammonia, and seawater. Some examples of acids are vinegar, lemon juice, and battery acid. To determine the pH of a liquid, you can use pH strips. Depending on the color (the redder the more acidic, the bluer the more alkaline), you can determine the pH of whatever you are trying to measure.

The skeletal structure of Arachidonic acid, an essential fatty acid, is provided below. Arachidonic acid is best classified as:

Answers

Skeletal structure is missing, so i have attached it.

Answer:

Option B: Omega 6 fatty acid

Explanation:

Arachidonic Acid is defined as an essential and unsaturated fatty acid. It's usually found in animal and human fat including the liver, brain, and also glandular organs. While in animals, it is a constituent of their phosphatides.

Arachidonic Acid is formed as a result of the synthesis from dietary linoleic acid and it's a preliminary stage in the biosynthesis of prostaglandins, thromboxanes, and leukotrienes.

In short, Arachidonic acid is basically a long-chain fatty acid which is a C20, Omega 6 polyunsaturated fatty acid that has four Z-double bonds.

Need help!!! Don’t understand

Answers

A) Neither carbon nor oxygen has satisfied the octet rule

To begin with...

The bond between carbon and oxygen is suppose to have 3 bonds in between

Second:

The lone pairs are not drawn. Since carbon monoxide has 3 bonds in between it should have a lone pair (2 dots) left over on each atom.

Reminder: in order to satisfy the octet rule EACH atom must have 8 electrons. Carbon has 4 valence shell electrons and oxygen has 6. In order to satisfy this rule, there should be 3 bonds in between which makes a total of 6 for each atom plus the lone pairs that make up the 8.

I hope that’s not too confusing, if you still have any questions please let me know in the comments (:

Observe Record the appearance (colors,
textures, etc.) of the reactants in the data table.
How many reactants are there?
DONE

Answers

Answer:

1

Explanation:

By observing the appearance (colors, textures, etc.) of the reactants in the data one reactant is there.

What is reactant?

A reactant is a substance or can say a chemical compound that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products.

For example we take a reaction-

O₂(g) + H₂(g) → H₂O(g)

Here, O₂ and H₂ are the reactants and H₂O is the product.

A reactant is present 100% initially and after sometimes it reduces gradually to form product according to chemical kinetics.

Given, the picture shown and the colour and texture of the reactant is shown.

Therefore, By observing the appearance (colors, textures, etc.) of the reactants in the data one reactant is there.

Learn more about chemical reactions, here:

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FULL TITUIE Lait veluw. How Element Valence Electrons electrons Gain / lose Symbol and Charge Cation or Anion Metal, Nonmetal, or Metalloid many Calcium 1+ loso 2 ca? cation Metal Bromine Nitrogen Iron (111) 3 Tin (II) 2 Fluorine Cesium lodine Phosphorus Copper (1) Lithium Aluminum Sulfur Manganese (IV) 4 Chlorine Oxygen​

Answers

Answer:

Can you translate to english? but i think its X

Explanation:

which is more reactive between magnesium and sulphur?​

Answers

Answer:

Sulfur (in British English: sulphur) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur

Hint: The half life of an element is the amount of time it takes for half of that element sample to decay into a different
element
Based on the graph of radioactive decay for Co-60, how many years does it take for a 10 gram sample of Co-60 to decay into a 125
gram sample?
-0.)
A)
3 years
B)
5.27 years
15.8 years
D)
3 half lives
^ $* ENG

Answers

Answer:

Concept: Half-life

Just a general tip, learn to format your question and fix any grammatical issues. Post the question as a picture instead next time, because the copy and pasting clearly failed for you. I'm assuming you mean 1.25 grams.So it would take 3 years

Is science logical please help meeeeeee

Answers

Answer:

It kind of is logical so my answer is yes

Yes science is logical

Is the trend in reactivity for nonmetals the same as the trend in reactivity for metals?

Answers

In Non-metals
Period - reactivity increases as you go from the left to the right. Group - reactivity decreases as you go down the group. hope this helps, sorry if it doesn’t

Answer:

no

Explanation:

In Non-metals

Period - reactivity increases as you go from the left to the right. Group - reactivity decreases as you go down the group

In Metals

Reactivity increases down a group because as nuclear shielding increases and the nucleus' hold on the valence electron weakens, therefore it is easier to remove valence electrons.

What is the work done on an object moved a distance of 63 m with a force of 8.5 x 103
Newtons?

Answers

Answer:

5.355 × 10³ Joules

Explanation:

I just had this question on my test


Equation that shows the formula of the reactants and products are called

Answers

Answer:

chemical equation

Explanation:

A 1.25 g sample of aluminum is reacted with 3.28 g of copper (II) sulfate. What is the limiting reactant?
2Al(s) + 3CuSO4(aq) = Al2(SO4)3(aq) + 3Cu(s)

Select one:
a. Copper
b. Aluminum sulfate
c. Aluminum
d. Copper (II) sulfate

Answers

Answer:

d. Copper (II) sulfate

Explanation:

Given data:

Mass of Al = 1.25 g

Mass of CuSO₄ = 3.28 g

What is limiting reactant = ?

Solution:

Chemical equation:

2Al + 3CuSO₄   →   Al₂ (SO₄)₃ + 3Cu

Number of moles of Al:

Number of moles = mass/molar mass

Number of moles = 1.25 g/ 27 g/mol

Number of moles = 0.05 mol

Number of moles of CuSO₄:

Number of moles = mass/molar mass

Number of moles = 3.28 g/ 159.6 g/mol

Number of moles = 0.02 mol

now we will compare the moles of reactant with product.

               Al           :           Al₂ (SO₄)₃

                 2          :             1

               0.05       :          1/2×0.05=0.025 mol

                Al           :            Cu

                 2            :              3

               0.05         :            3/2×0.05 = 0.075 mol

         CuSO₄           :           Al₂ (SO₄)₃

                3             :             1

               0.02         :          1/3×0.02=0.007 mol

         CuSO₄           :            Cu

               3               :              3

               0.02         :              0.02

Less number of moles of reactants are produced by CuSO₄ thus it will act as limiting reactant.

What does the little ‘3’ in 2NH3 mean?

Answers

Answer:

It determines the number of molecules

Answer:

it means there are 3 hydrogen atoms in the compound.

Does anyone know what Yttrium(II) Dichromate's formula would look like?

Answers

Answer:

YCr2O7

Explanation:

1. distance = 10 m
time = 2 s
What is this object's speed?

Answers

Speed = distance/time
10m/2s = 5m/s
The speed is 5 m/s

Answer:

5m/s

Explanation:

2s ÷ 2 = s

10m ÷ 2 = 5m

5 meters per second or 5m/s

Good day pleases help

Answers

I can’t see the choices can you take another picture of this assignment please so i can help you
The answer is b. Wolves work together

If a parent cell has 24 chromosomes , how many chromosomes will each daughter cell have? Then compare the chromosomes in the parent cell and the daughter cells.

Answers

Answer:

If a cell has 24 chromosomes before cell division then daughter cell resulting from mitotic division will have 24 chromosomes while daughter cell resulting from the meiotic division will contain 12 chromosomes each.

Explanation:

Which example shows how genetic engineering can be used in the agricultural industry?

A.
Two tomato plants that produce sweet tomatoes are crossed to produce offspring that also produce sweet tomatoes.
B.
A horse is bred with a donkey to produce a hybrid offspring that has characteristics of both parents.
C.
A gene for pest resistance is inserted into the genome of a corn plant.
D.
A sheep is cloned to produce an exact copy of the original sheep.

Answers

Answer:

c. a gene for pest resistance is inserted into the genome of a corn plant

Explanation:

Answer: A duh

Explanation:

becastse

What is Zeff of phosphorus

Answers

Answer:

Explanation:

Here is an illustration showing how to "calculate" +5 as the effective nuclear charge (Zeff) for phosphorus. We are not implying that the electrons are in orbits here, this is simply showing inner shell electrons that shield the outer valence electrons from the full nuclear charge.

We have that The effective nuclear charge Z_{eff} of 3p electron in phosphorus atom is discovered to be approximately 4.80

[tex]Z_{eff}=4.8[/tex]

It is important to note that the Z_{eff} of an element can be defined simply as the average positive charge felt by an shell electron in an atom from the various electrons around it

Hence

The effective nuclear charge Z_{eff} of 3p electron in phosphorus atom is discovered to be approximately 4.80

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Write three observations that could help you identify this organism.

Answers

The shape of the organism is a huge factor, as it could fact for a different creature and/or organism every time. For example, a antelope may have a different form or structure of let’s say a spider, as this is the significant factor of ones shape, the first observation.

Secondly, the colors. As different organism come in different areas of reflections of light, it can easily be identified with this certain color and the way that the light reflects on it. This is another form of visual appearance, and important factor in identification.

Lastly, the pattern. As located on the back, the spikes/thread-looking things sticking out plays a huge factor in finding the organism name and/or identifying it. Every organism has a different pattern, humans being a huge one, all different

Observational studies of organisms is significant to our lives, and it’s greatly helped progress our sciences and society.

Answer:

the unidentified animal  looked like a slug, it looked like it lives or can be in water, the body of the unidentified animal is purple, it seems to have an orange spikes coming out of it's backs.

An object has a gravitational potential energy that is 800 Joules. Its
height above ground is 2.25 meters. What is its mass?

Answers

Answer:

36.28 kg

Explanation:

Given data:

Gravitational potential energy of object = 800 J

Height from ground = 2.245 m

Mass of object = ?

Solution:

Formula:

P.E = mgh

g =acceleration due to gravity =  9.8 m/s²

by putting values,

800 J = m× 9.8 m/s² ×2.25 m

J = kgm²/s²

800 kgm²/s² = m× 22.05 m²/s²

m = 800 kgm²/s² /22.05 m²/s²

m = 36.28 kg

3. (10 Points) Write a double replacement reaction where one of the products is
copper (11) oxide. Include the states of matter for each of the reactants and
products.

Answers

Answer:

Up to now, we have presented chemical reactions as a topic, but we have not ... A single-replacement reaction is a chemical reaction in which one element is ... single-replacement reactions will occur between two given reactants. This is ... Use the activity series to predict the products, if any, of each equation.

Explanation:

What does eggshells change color under the influence of various liquids?

Answers

Answer:Adding calcium to chicken's food is going to make the eggshells firmer. Independent variable:​

Explanation:

D 6) Select True or False.
Solar flares can affect how machines on Earth work.
False
True

Answers

Answer:

true

Explanation:

Answer:

False

Explanation:

Since when did Solar flares can affect how machines on Earth work that is negitive they have never affected how our machines work

What is mass movement give examples

Answers

Answer: Mass wasting is the movement of rock and soil down slope under the influence of gravity. Rock falls, slumps, and debris flows are all examples of mass wasting.

Define the term "Potential Energy" in your OWN WORDS.

Answers

hope this can help you

you can search on google some stuff like your question

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