calculate the molarity of 0.289 moles of FeC13 dissolved in 120 ml of solution

First convert the 590.0 grams of water to liters of water.

590.0 grams x  (1 L / 1000 grams) = 0.59 L

Since we're dealing with concentration, recall this formula:

Molarity (M)  = (moles of solute) / (liters of solution)

We know the Molarity and the Liters

0.82 M = (moles) / 0.59 L

To find the moles multiply 0.59 on both sides.

The result is 0.4838 moles of CaCl (the solute).

Then change moles into grams because the question wants grams.

In order to convert the moles of a substance to grams, you will need to multiply the mole value of the substance by its molar mass which is 110.986.

(0.4838 moles CaCl2) x (110.986 g CaCl)/ 1 mol CaCl2

To produce a 0.82 m solution, dissolve 53.61 grams of anhydrous calcium chloride in 590.0 grams of water.

To solve this problem, we need to understand the concept of molarity and how to calculate the mass of a solute required to make a solution of a given molarity.

Molarity (M) is defined as the number of moles of solute (n) divided by the volume of the solution (V) in liters:

[tex]\[ M = \frac{n}{V} \][/tex]

To find the mass of the solute (m), we need to use the molar mass (Molar mass = molecular weight in g/mol) of the solute.

[tex]\[ \text{Molar mass of CaCl2} = \text{Atomic mass of Ca} + 2 \times \text{Atomic mass of Cl} \] \[ \text{Molar mass of CaCl2} = 40.08 \text{ g/mol} + 2 \times 35.45 \text{ g/mol} \] \[ \text{Molar mass of CaCl2} = 40.08 \text{ g/mol} + 70.90 \text{ g/mol} \] \[ \text{Molar mass of CaCl2} = 110.98 \text{ g/mol} \][/tex]

Now, we can rearrange the molarity equation to solve for the number of moles (n):

[tex]\[ n = M \times V \][/tex]

Now we can calculate the number of moles of CaCl2 needed for a 0.82 m solution:

[tex]\[ n = 0.82 \text{ M} \times 0.5900 \text{ L} \] \[ n = 0.4838 \text{ mol} \][/tex]

Finally, we can find the mass of CaCl₂ required by multiplying the number of moles by the molar mass:

[tex]\[ m = n \times \text{Molar mass of CaCl2} \] \[ m = 0.4838 \text{ mol} \times 110.98 \text{ g/mol} \] \[ m = 53.61 \text{ g} \][/tex]

Therefore, the mass of anhydrous calcium chloride that should be dissolved in 590.0 grams of water to produce a 0.82 m solution is approximately 53.61 grams.

Electromagnetic waves consist of both electric and magnetic field waves. The creation of all electromagnetic waves begins with an oscillating charged particle, which creates oscillating electric and magnetic fields.

Final answer:

Electromagnetic waves consist of oscillating electric and magnetic fields, and propagate at the speed of light.

Explanation:

Electromagnetic waves consist of oscillating electric and magnetic fields. These waves propagate at the speed of light and can be described as transverse waves. They have different frequencies, wavelengths, and energies, but all travel at the same speed in a vacuum.

it has gone through the process of a chemical reaction, and is no longer in its original form, which makes it lose its means of conductivity

Final answer:

Iron rusts when exposed to oxygen and water, forming a red-brown hydrated metal oxide called rust. This rust is a poor conductor of electricity compared to iron metal. The rust continually flakes off, exposing fresh metal surface susceptible to further oxidation.

Explanation:

Iron rusts when it is exposed to oxygen and water. The rust that forms on iron is a red-brown hydrated metal oxide known as Fe2O3 xH2O. When iron rusts, it no longer conducts electricity because the rust is a poor conductor compared to the original iron metal. The rust flakes off continuously, exposing a fresh metal surface that is vulnerable to further reaction with oxygen and water.

Final answer:

A light year is the distance light is able to travel in one year in space, which is approximately 9.5 trillion kilometers. It is often used by astronomers to measure large distances between celestial objects such as stars and galaxies. Correct answer to the student's question is option A.

Explanation:

A light year is a unit of distance equal to the distance light travels in one year. When light travels in the vacuum of space, it moves at a speed of about 300,000 kilometers per second(km/s), which is the fastest speed anything can travel in the universe.

Therefore, the true answer to the question is A.

The distance light travels in one earth year. This equates to approximately 9.5 trillion kilometers.

Light-years are commonly used by astronomers to measure vast distances in the universe. For example, the nearest star to us, Proxima Centauri, lies about 4.24 light years away from Earth, and the Andromeda Galaxy, our closest large galactic neighbor, is roughly 2.5 million light years distant.

When we observe celestial bodies like stars and galaxies, we see them as they were years, centuries, or even millennia ago because their light has taken that long to reach us.

Answer:

Thermal energy is the Total translation kinetic energy of the particles in an object and internal energy is the Total energy of particles in an object

Explanation:

Answer:

Thermal is total translation kinetic energy of the particles in an object and Internal energy is the total energy of particles in an object

Explanation:

Answer:

[tex]1^{f} =187.7 \frac{J}{kg}[/tex]

Explanation:

SO in order to calculate the specific latent heat of fusion, you need to remember the formula:

[tex]1^{f} =\frac{Q}{m}[/tex]

Where [tex]1^{f}[/tex] representes the specific latent heart of fusion.

[tex]Q[/tex] represents the heat energy added, usually represented in kJ

[tex]m[/tex] represents the mass of the object, in kg.

Now that we have our formula we just have to put our values into the formula:

[tex]1^{f} =\frac{Q}{m}[/tex]

[tex]1^{f} =\frac{863kJ}{4.6kg}[/tex]

[tex]1^{f} =187.7 \frac{J}{kg}[/tex]

SO our answer would be [tex]1^{f} =187.7 \frac{J}{kg}[/tex]

When equal forces from opposite directions act on an object, they are said to be balanced. Such a state doesn't change the motion of the object, which aligns with Newton's First Law of Motion or The Law of Inertia.

Balanced forces occur when the total force applied to an object from one direction equates to the total force applying from the opposite direction. Hence, the object will remain still or continue moving at a constant speed in a straight line. It's important to note that under balanced forces, the motion state of the object doesn't change, also known as Newton's First Law of Motion or The Law of Inertia.

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Hey there!

The correct answer should be B. Potential Energy Only

Potential energy is the energy stored in an object because it isn’t moving/isn’t in motion

Hope this helps you!

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xXxGolferGirlxXx

V = L x W x H

V = 11 x 5 x 6

V = 330

the volume is V = 330 cm

V=L*W*H

= 607.568 Torr

1 in of mercury is equivalent to 25.4 Torr  

Therefore;

23.92 InHg will be equal to;

23.92 × 25.4  

= 607.568 Torr

H2O -Bronsted Acid

                 B (aq) + H2O (l) → BH+ (aq) + OH– (aq)

          That is; Base + Acid will give a conjugate acid + hydroxide ion

In the gender reaction water acts as the Bronsted acid because it donates a proton to the nitrite ion which in turn acts as the Bronsted base.

In the given equation NO2- + H2O -> HNO2 + OH-, the Bronsted acid is H2O. According to the Bronsted-Lowry definition an acid is a substance that can donate a proton (H+), and a base is a substance that can accept a proton. In this reaction water (H2O) donates a proton to the nitrite ion (NO2-) and hence it is the Bronsted acid. The nitrite ion is the Bronsted base because it accepts a proton from water to form nitrous acid (HNO2).

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B) B

The activation energy for the forward reaction is represented by the arrow from the reactants to the transition state in a reaction diagram.

In a reaction diagram, the activation energy for the forward reaction is represented by the arrow from the reactants to the transition state. This arrow shows the energy barrier that must be overcome for the reaction to occur. The activation energy is the minimum amount of energy that reactant particles must have in order to successfully collide and form products.

The four steps of food safety are:

Hope this helps! If you need more help or have any questions just message me! :)

A gamma ray or gamma radiation, is a penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves and so imparts the highest photon energy

penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei

Answer:

32 m/s

Explanation:

Frequency is the number of waves that pass a particular point in 1 second

Wavelength is the distance between 2 crests or 2 troughs

Speed = frequency x wavelength

Substituting the values

Speed = 4 Hz x 8 m

Speed = 32 m/s

Waves speed is 32 m/s

The speed of the sound wave is 32 meters per second.

To find the speed of the wave, we can use the relationship between speed, frequency, and wavelength, which is given by the equation:

[tex]\[ \text{Speed} = \text{Frequency} \times \text{Wavelength} \][/tex]

Given that the frequency of the sound wave is 4 Hz (hertz) and the wavelength is 8 meters, we can plug these values into the equation:

[tex]\[ \text{Speed} = 4 \, \text{Hz} \times 8 \, \text{m} \] \[ \text{Speed} = 32 \, \text{m/s} \][/tex]

Therefore, the speed of the sound wave is 32 meters per second. This is a fundamental relationship in wave mechanics, where the speed of a wave is the product of its frequency and its wavelength.

They all have the same number of electrons in the electron cloud.

The have same number of valence electrons

The elements in the same group has similar number of valence electrons. For instance All the alkali metals in Group 1 have 1 valence electron, so they all tend to react the same way with other substances. The elements in each group have the same number of electrons in the outer orbital which are responsible for the chemical properties of element so we can say that each family has the same chemical properties.

The process to create a protected area takes a long time because there's numerous things that have to be taken in account and sorted out before the area gets that kind of legal status.

Usually there's people living in the area that is supposed to be protected, though it is mostly small settlements. The people living there are connected with that area, use the resources, and their lives are largely based and dependent on it. In order for any problems to be avoided, these people should all be educated, deals to be made with them, and properly negotiated so that the area wouldn't have any damage, but also them to be able to sustain themselves.

The boundaries of the area are also complicated, it it takes time to sort out what parts should be included and what not. Basically to set the priorities.

People should be employed to protect and take care of the area, so they have to undergo a training, education, and to get familiar with it.

The legalization of the area as such can sometimes too make problems and take some time.

RCOOR. the answer is first option

The correct answer is - subspecies.

The subspecies represents an aggregate of phenotypically similar populations of a species. They inhabit a geographic subdivision of the species. They also are differing taxonomically from the other members of the species.

The subspecies are part of a species. They are able to mate with the other members of the species without any problems if they come to a situation like that, and produce healthy offspring. In general, the subspecies is pretty much the same as the species, just that it exhibits some specific physical traits that are not found in the rest of the members of the species.

A perfect example for this is the leopard. The African leopard has short and less dense fur, is larger, lighter in coloration, while the Amur leopard has much denser and longer fur, is slightly smaller, and is darker in coloration. Both of them are part of the same species, but exhibit specific physical traits that make them a subspecies.

The answer would be A: Simple machines are tools that make work easier.

➷ Simple machined are tools that make work easier. Option A is correct.

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➶ Good Luck (:

➶ Have A Great Day ^-^

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1.6218377410367840 that would be your answer but dont forget to round it to the closets number

D. evaporation and iceberg formation

because weathering rocks are mde up of salt and minerals creating iceberg formations and the evaporation density changes throughout concentration in the ocean.

Final answer:

The two factors most directly responsible for increasing the concentration of salt in the ocean are evaporation and iceberg formation. Evaporation leaves salts behind in the water, and iceberg formation concentrates salts by freezing freshwater, leaving salts in the ocean.

Explanation:

The question asks which pair of factors are most directly responsible for increasing the concentration of salt in the ocean. The correct answer is D. evaporation and iceberg formation. Evaporation of ocean water increases the salt concentration because when water evaporates, it leaves the salts behind, thus concentrating them. Iceberg formation similarly contributes to salt concentration. When sea water freezes to form icebergs, it primarily forms as freshwater ice, leaving the salts in the surrounding water, thus increasing its salinity.

Hey im happy to help!

Heat can float from one place to another, like all energy.Heat floats in solids by conduction, that happens because the molecules hit one another.Heat within the solid will flow from hot to cold.Heat will flow downward if its cold there.

Hope this helps, have a great rest of your day!

Answer:

Heat flows in a cycle. Heat flows downward towards cold air.

Answer:

Option C :-It is represented by K.

Explanation:

Equilibrium constant is the ratio of products to reactants.

It has a constant value at specific temperature. If temperature changes, K also changes.

It has a value in the range of 0.001 to 1000.

Answer: Option (c) is the correct answer.

Explanation:

Equilibrium reaction means when rate of forward reaction is equal to rate of backward reaction.

And, relationship between the amount of products and the amount of reactants present in an equilibrium reaction at a given temperature is known as equilibrium constant.

Equilibrium constant is denoted by 'K'.

For example, [tex]xA + yB \rightarrow zC[/tex]

The equilibrium constant for this reaction will be as follows.

           K = [tex]\frac{[C]^{z}}{[A]^{x}[B]^{y}}[/tex]

Therefore, it is the ratio of products to reactants. And, if value of K > 1 then it means that the mixture contains mostly products whereas K < 1 means that the mixture contains mostly reactants.

Hence, we can conclude that out of the given options it is represented by the symbol K, is true for the equilibrium constant of a reaction.

Gravity is a force that always attracts or pulls objects toward each other without direct contact or impact. Gravitational attraction depends on the mass of the two objects and the distance they are apart. Objects on Earth are pulled toward the center of Earth.

Electrical energy and back to sound energy

Electrical then back into sound

Answer:

"The cold process method" is the most popular soap making process today. Some soap makers use the hot process, which was much more significant in the past centuries. Handmade soap is technically glycerin soap and it differs from industrial soap.

Explanation: Ready-Made soap base is already soap, so all the steps necessary to producing the soap itself are eliminated. The soapmaker's concentration can be focused on the artistic, aesthetic and beneficial aspects of the soap. Also referred to as "melt and pour" or "MP" soap, ready-made soap base comes in a solid block.

Soap is made through a process called saponification, which involves the reaction between fats or oils and an alkali solution. The fats and alkali are heated together and mixed to form soap and glycerol. Fragrances and colors can be added to the soap to make it smell good.

Soap is made through a process called saponification, which involves the reaction between fats or oils and an alkali solution.

Traditionally, animal fats or plant oils were used along with a strong alkali like lye.

The fats and alkali are heated together and mixed to form soap and glycerol.

The soap is then separated and purified through filtration and washing.

Finally, fragrances and colors can be added to the soap to make it smell good.

there's really no specific answer but mine would be...

1. how does that light show from earth?

2. will that light ever dim?

3. are some stars bright but just not bright enough that we can see?

How many stars are in space?

How far away from Earth are certain stars?

Are there other planets like Earth?

The universe is everything. It includes all of space and all the matter and energy that space contains.

Three questions are:

Learn more about the universe here:

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