A student uses 200 grams of water at a temperature of 60 °C to prepare a saturated solution of potassium chloride , KCI. Identify the solute in this solution.
1. H2O(l)
2. KCl (aq)
3.K + (aq)
4.KCl(s)

Answers

Answer 1

Answer:

4. KCl(s)

Explanation:

KCl is an ionic salt that dissolves in water to form a KCl aqueous solution.

Answer 2

A solution is defined as the homogeneous mixture of one or more solutes dissolved in a solvent. Here in the saturated solution of potassium chloride, the solute is KCl. The correct option is 4.

What is a solute?

A solute is defined as the substance which is dissolved in a solution. In a solution the amount of the solute present is always smaller than the amount of the solvent. For example in a salt solution, salt dissolves in water and therefore salt is the solute.

The particles of the solute present in a solution cannot be seen by our eye. The solute from a solution is not possible to separate by filtration. In an unsaturated solution, the concentration of the solute is much lower than that of the concentration of the solvent.

A solution is a combination of the solute and the solvent.

Thus the correct option is 4 - KCl.

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Related Questions

A 10.0 mL sample of H2SO4 was exactly neutralized by 23.5 mL of 1.00 M KOH. Calculate the molarity of the acid. H2SO4(aq) + KOH(aq) —> K2SO4(aq) + H2O(l)

Answers

Answer:

1.175 M

Explanation:

The balanced reaction is:

H₂SO₄(aq) + 2KOH(aq) —> K₂SO₄(aq) + 2H₂O(l)

First we calculate how many moles of KOH reacted, using the given concentration and volume:

1.00 M * 23.5 mL = 23.5 mmol KOH

Then we convert moles of KOH to moles of H₂SO₄, using the stoichiometric coefficients of the balanced reaction:

23.5 mmol KOH * [tex]\frac{1molH_2SO_4}{2molKOH}[/tex] = 11.75 mmol H₂SO₄

Finally we calculate the molarity of the acid:

11.75 mmol H₂SO₄ / 10.0 mL = 1.175 M

This subject is science.

All the members of one community living in a particular area make up a population. True or False.

Please help please please please.​

Answers

Answer:

false

Explanation:

All the members of one species in a particular area are referred to as a population. All the different populations that live together in an area make up a community. The community of organisms that live in a particular area, along with their nonliving surroundings, make up an ecosystem.

What happened during the fusion reaction shown? 2H Зн 4He neutron O A. Two H nuclei fused into one He nucleus. O B. One He nucleus split into two H nuclei. O C. The nuclei that fused lost all their neutrons. D. The nuclei that fused lost some of their protons.​

Answers

Answer: C.

Explanation:

two H nuclei fused into one He nucleus

Answer: A!

Explanation: just did it

How are lysosomes and vacuoles the same? How are
they different?

Answers

Answer:

This is the answer they're looking for:

Lysosomes and vacuoles both deal with waste materials. Lysosomes break down waste materials, and vacuoles store waste materials in the cell temporarily before the cell get rids of them.

Explanation:

i hope you'll pick me for brainiest

find the concentration in mol/dm^3 of a solution of sodium hydroxide if it contains 3.5g of NaOH in 100cm^3 of solution.​

Answers

Answer:

0.875

...............

Calculate the number of miles of magnesium,chlorine, and oxygen atoms in 5.00 moles of magnesium perchlorate

Answers

Answer:

5.00 mol Mg

10.0 mol Cl

40.0 mol O

Explanation:

Step 1: Given data

Moles of Mg(ClO₄)₂: 5.00 mol

Step 2: Calculate the number of moles of Mg

The molar ratio of Mg(ClO₄)₂ to Mg is 1:1.

5.00 mol Mg(ClO₄)₂ × 1 mol Mg/1 mol Mg(ClO₄)₂ = 5.00 mol Mg

Step 3: Calculate the number of moles of Cl

The molar ratio of Mg(ClO₄)₂ to Cl is 1:2.

5.00 mol Mg(ClO₄)₂ × 2 mol Cl/1 mol Mg(ClO₄)₂ = 10.0 mol Cl

Step 4: Calculate the number of moles of O

The molar ratio of Mg(ClO₄)₂ to Cl is 1:8.

5.00 mol Mg(ClO₄)₂ × 8 mol O/1 mol Mg(ClO₄)₂ = 40.0 mol O

Ozone is three oxygen atoms bonded together. It can sometimes be smelled in the air after a thunderstorm. the smell is a result of

Answers

Ozone gas can be smelled in the air after a thunderstorm as a result of  reactions between oxides of nitrogen and volatile organic compounds.

How ozone gas be smelled?

Ozone gas can be produced due to chemical reactions between oxides of nitrogen and volatile organic compounds. This reaction occurs when pollututed gas is emitted from vehicles react and other activities with each other in the presence of sunlight.

So we can canclude that Ozone gas can be smelled in the air after a thunderstorm as a result of  reactions between oxides of nitrogen and volatile organic co

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1. Write the chemical formula for possium (IV) oxyalide.

Answers

I don’t know what your talking about
Answerr
Explaination

Answer:

Explanation:

Potassium oxyalide

Chemical formula K2O

Molar mass 94.196 g·mol−1

Appearance Pale yellow solid

Odor Odorless

If 1.45 moles of Sodium Bromide are added to a 7.5 M solution, what is the volume of the solution made?

Answers

Answer:

0.193 L

Explanation:

Another way of writing the question would be: What volume of a 7.5 M Sodium Bromide solution would contain 1.45 moles.

To answer that we can use the definition of molarity:

Molarity = moles / liters

We input the given data:

7.5 M = 1.45 moles / liters

And calculate how many liters are required:

1.45 mol / 7.5 M = 0.193 L

Which expression represents the concentration of OH– in solution?
a. 10–14 / [H3O+]
b. [OH–] / 10–14
c. 10–14 – [H3O+]
d. 10–14 x [H3O+]

Answers

10^-14 / [H3O+]
Explanation:
Hydronium (H3O+) and hydroxide ions (OH-) are both present in pure water and in all aqueous solutions.
Their respective concentrations in water are 10^-7 M each and are inversely proportional to each other as given by the ion product of water, Kw.
Kw = [H3O+][OH−]
Where Kw = 1.0 * 10^-14,
[H3O+] = concentration of hydronium ions
[OH-] = concentration of hydroxide ions
Therefore, [OH-] = Kw / [H3O+]
[OH-] = 10^-14/[H3O+]

Please help with yes or no

Answers

All of them are yes

Using the balanced equation N2+O2=2NO, how many grams of NO can be produced when 25.0 grams of N react?

Answers

Answer:

[tex]53.55gNO[/tex]

Explanation:

Hello there!

In this case, according to the given chemical reaction, it is possible for us to calculate the produced grams of nitrogen monoxide by starting with 25.0 g of nitrogen via their 1:2 mole ratio and the molar masses of 30.1 g/mol and 28.02 g/mol, respectively and by some stoichiometry:

[tex]=25.0gN_2*\frac{1molN_2}{28.02gN_2}*\frac{2molNO}{1molN_2}*\frac{30.01 gNO}{1molNO}\\\\=53.55gNO[/tex]

Best regards!

The oxidation state/number for X in XO3- is:

Answers

Answer:

We can Observe that the Compound does not have the Positive or the negative Charge thus it is Neutral. Hence, the Oxidation Number of the Compound Will be 0. Thus, the Highest Oxidation Number of the X is 6.

The oxidation state/number for X in XO3 is determined as +6.

Oxidation state of X in XO3

The oxidation state/number for X in XO3 is determined from the overal charge of the compound and the charge of oxygen atom.

Overall charge of the compound = 0Oxidation state of oxygen (O) is -2

The oxidation state of "X" is calculated as;

X + (3 x -2) = 0

X - 6 = 0

X = +6

Thus, the oxidation state/number for X in XO3 is determined as +6.

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A sheet of muscles called the diaphragm seals the bottom of this cavity true or false?
The blood transports the oxygen to every cell in the body true or false?
The cells need carbon dioxide to release energy true or false?
Carbon Dioxide is a waste product of respiration true or false?
Water is needed in the cells for respiration to occur true or false?
Glucose is made during the respiration true or false?
Respiration does not happen in the cells when we sleep true or false?
Air enters the body through the nose and mouth, and passes into the wind pipe of the trachea true or false?

Answers

Answer:

1. False. White blood cells do.

2. False. Every seven years your cells are in the process of dying and being replaced. Although some cells don't die but your cells don't last for more than a period of 7 years.

3. True.

4. True.

5. False. Explained in 2.

Explanation:

Match each definition to the appropriate term.

a. The condition that a reaction takes place without outside help _________
b. Difference of the enthalpy (of a system) minus the product of the entropy and absolute temperature ________
c. Sum of the internal energy plus the product of the pressure and volume for a reaction _________
d. The extent of randomness in a system __________
e. Solution in which no more solute can be dissolved in the solven ________

1. Gibbs free energy
2. Spontaneity
3. Saturated solution
4. Entropy
5. Enthalpy

Answers

Answer:

a. The condition that a reaction takes place without outside help Spontaneity

b. Difference of the enthalpy (of a system) minus the product of the entropy and absolute temperature Gibbs free energy

c. Sum of the internal energy plus the product of the pressure and volume for a reaction   Enthalpy.

d. The extent of randomness in a system Entropy

e. Solution in which no more solute can be dissolved in the solven Saturated solution

Explanation:

 (a) SPONTANEITY - The quality of being natural rather than planned in advance is described as spontaneity.

(b) GIBBS FREE ENERGY - Gibbs free energy, also known as the Gibbs function, Gibbs energy, or free enthalpy, is a quantity used to quantify the maximum amount of work that can be performed in a thermodynamic system when the temperature and pressure are held constant. The symbol ‘G' stands for Gibbs free energy.

(c) ENTHALPY - The heat absorbed or released during a process at constant pressure is equal to the Enthalpy shift. While “enthalpy” is often referred to as “heat content,” most people prefer to refer to it as “enthalpy.”

(d) ENTROPY - Entropy is the amount of thermal energy in a device per unit temperature that can't be used to do useful work. Since work is produced by ordered molecular motion, entropy is also a measure of a system's molecular disorder, or randomness. For several everyday phenomena, the idea of entropy offers profound insight into the direction of spontaneous change.

(e) SATURATED SOLUTION - A saturated solution is a chemical solution that contains the maximum amount of dissolved solute in the solvent. In a saturated solution, the extra solute will not dissolve. A number of factors influence the amount of solute that can be dissolved in a solvent to form a saturated solution.                              

Two students prepared aqueous solutions of LiCl and measured the properties, as shown in the table above. Both students observed that the solid LiCl readily dissolved in H2O. The students drew particle diagrams to explain the changes in the enthalpy and entropy of dissolution for LiCl based on their results and observations. Based on this information, the better particle diagram was drawn by which student, and why is that diagram more accurate?

A) The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl− ions causing an increase in entropy.

B) The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl− ions indicating that the dissolution of LiCl is exothermic.

C) The better particle diagram was drawn by Student 2 because it shows that LiCl does not dissociate, resulting in a decrease in entropy for the dissolution of LiCl.

D) The better particle diagram was drawn by Student 2 because it shows that LiCl does not dissociate, resulting in an endothermic process for the dissolution of LiCl.

Answers

Answer:

Solubility

Explanation:

Solid LiCl dissolves in water because:

A.  The Li+ ions are attracted to the oxygen atom (partially -ve charge) of water.

D.  The Cl– ions are attracted to the hydrogen atom (partially +ve charge) of water.

The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl− ions causing an increase in entropy.  The correct option is option A.

What is solubility?

The maximum amount of a material that may dissolve in another is known as its solubility. A saturated solution is created when a solvent can dissolve its maximum quantity of solute before reaching equilibrium.

A supersaturated solution results when extra solutes are dissolved past the equilibrium solubility limit under specific circumstances. More solute cannot raise the concentration in the solution past saturation or supersaturation. Instead, the extra solute begins to separate from the solution as a precipitate. The better particle diagram was drawn by Student 1 because when LiCl dissolves in water, it dissociates into Li+ and Cl− ions causing an increase in entropy.

Therefore, the correct option is option A.

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Hybridization of Al in AlF3

Answers

Answer:

Hybridization of Al in AlF3 solid is sp3d2.

A chemical change occurs when two or more substances react to form one or more new substances. Which of the following best completes this statement about a chemical reaction?

In a chemical reaction, . . .

A. Atoms are neither created nor destroyed.

B. Some atoms from the reactants may be lost.

C. Extra atoms are always gained in the product.

D. Extra atoms are added to the product, if needed.

Answers

Explanation:

A) Atoms are neither created nor destroyed

number of atoms in the reactant is always equal to the number of atoms in the product and hence, option A is the right answer

Which of the following environments are low-level areas that can be temporarily or seasonally filled with water?

Rainforest

Swamp

Tundra

Wetland giving brainlist HAS TO BE RIGHT

Answers

Answer:

Rainforest

Explanation:

Swamps are permanently filled with water

and Tundras are dry and cold so the answer should be Rainforest

Answer:

its rainforest it's a it's

Explanation:

10 points pls help!!

Answers

Answer:

Question 16: I'm not sure but most likely #3

Question 17: #4

Explanation: Hope this Helps

Answer:

A for first one and second one is A

The _______________________________________ is often referred to as the powerhouse of the cell

Answers

Answer:

Mitochondria

Explanation:

Answer:

Mitochondria

Explanation:

Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.

What attractive force pulls electrons toward protons to form chemical bonds?

A. Chemical bonding
B. Attraction of opposites
C. Electronegativity
D. Ionization energy

Answers

Answer:

C). Electronegativity.

Explanation:

'Electronegativity' is described as the tendency or a measure of the ability of an atom or molecule to attract electrons that leads to the formation of chemical bonds. It is denoted by 'χ', a Greek letter. The elements like Fluorine having a very high rate of electronegativity, its atom would attract the electrons more strongly while the elements with lesser electronegativity like Cesium would possess a lesser tendency to attract electrons towards it in order to form a bond. Thus, option C is the correct answer.

The correct name for HIO2?

Answers

Answer:

iodous acid

Explanation:

iodous acid would also be known as HIO2

Which of the following compounds is least soluble in water?
A) iron (III) chloride
B) ammonium acetate
C) sodium hydroxide
D) magnesium carbonate

Answers

Answer:

B

Explanation:

A sample of copper has a density of 10.50g/cm3 and measures of 0.400 dm long,20.0 mm high and 0.003 m thick. What is the mass in grams of this block of copper metal?

Answers

the mass in grams is 60 grams of copper metal.

Plz help me I am timed!!

Answers

Answer:

What do you need help with

Explanation:

Explanation:

okay I'll help but whats the question

Deviation will occur for volume assumption at ____________
A. Low Pressure
B. High Pressure
C. Constant Pressure
D. 1 atm

B. is it right?​

Answers

Answer:

1.A

Explanation:

please click the heart and rate excellent and brainleist to

Answer:

B.

Explanation:

The deviation of real gas from ideal gas behaviour occurs due to the assumption that, if pressure increases the volume decreases. The volume will approach a smaller number but will not be zero because the molecules will occupy some space that cannot be compressed further.Correct me if im wrong#CarryOnLearning

what is a heterogeneous mixture?​

Answers

Answer:

A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture

A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers. Each of the layers is called a phase.

bond. Water is a polar solvent. The oxygen atom, being more electronegative, attracts the electron cloud toward itself. As the electron cloud is pulled by the oxygen atom, it carries a partial negative charge, and the hydrogen atoms carry a partial positive charge. This partial separation of charges in the water molecule makes it polar. Which intermolecular forces contribute to the dissolution of NaCl in water

Answers

Answer:

NaCl and water: Ion - Dipolo forces

NaCl and Hexane: Ion-ion force between Na+ and Cl− ions and London dispersion force between two hexane molecules

Explanation:

NaCl and water:

The ion-dipole force is established between an ion and a polar molecule.  Polar molecules are dipoles, they have a positive end and a negative end.

H2O has an important charge separation in its atoms (the H has a positive partial charge and the O has a negative partial charge) and this causes permanent electrical dipoles in the water molecules.

Sodium chloride is an ionic compound formed of positive and negative charge ions, Na + and Cl-. Depending on their charge, these ions will be attracted to opposite charges in the water molecules (H attracts chloride ions and O attracts sodium ions), causing the salt to dissolve in water.

Explanation:

Which element does this Bohr model represent? (look at a periodic table if needed)

Answers

Circulating round the nucleus are the electrons in various orbits of different energy levels. Electrons are negatively charged and represented by the symbol 'e'. In the given image the number of protons are -6. Hence the element in question is Carbon as Carbon has the atomic number 6.
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