Calculate the molar solubility and solubility in g/l of agcl in 0.00138 m NaCl.

Answer:

Gravitational potential energy is greatest at the highest point of a roller coaster and least at the lowest point.

Explanation:

True/false questions require a statement to be either true or false, but the given prompt is incomplete and does not form a statement. Therefore, it cannot be classified as true or false.

However, to provide some clarification, the prompt seems to be asking for a synthesis pathway starting with ethanol and ethyl butanoate. Ethanol (\(C_2H_5OH\)) and ethyl butanoate (\(C_6H_{12}O_2\)) are organic compounds that can be used in organic synthesis to produce other chemicals. One possible pathway for the synthesis of a compound starting with these two compounds is:

Convert ethanol to ethene (\(C_2H_4\)) by dehydrating it with a strong acid such as sulfuric acid.

This synthesis pathway is just one example, and there can be multiple ways to synthesize a compound starting with different starting materials.

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Flash flood along a normally dry river valley be a dangerous event densely populated area also river valley are so dangerous for flash flood

Flash flood is the move at very fast speed and can roll bounders also tear out tree and destroy building and destroy bridges also and wall of water can rich height 10 to 20 feet and and flash flood are so dangerous in the densely populated area as well as river valley it is so high risk for flash flood and flash flood is the more common in the area where dry climate and rocky terrain are seen because there is lack of soil and vegetation allow torrential rain to flow overland rather than infiltrate into the ground

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The term defined as the fundamental particles of protons and neutrons is nucleons and the correct option is option B.

Nucleons include both protons and neutrons, which are the primary constituents of atomic nuclei. Electrons, on the other hand, are negatively charged particles that orbit the nucleus. Molecules are formed by the bonding of atoms, and quarks are elementary particles that combine to form nucleons.

Atoms with the same number of protons but different numbers of neutrons are called isotopes. They have almost similar chemical properties but are different in mass and therefore in physical properties.

Thus, the ideal selection is option B.

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Answer:

o

Explanation:

Answer:

\(\frac{140}{57}La -------->\frac{140}{58} Ce +\frac{0}{-1} \beta\)

Explanation:

Beta emission occurs when a neutron is converted to a proton, an electron and a neutrino. This phenomenon reduces the neutron-proton ratio(N/P).

When a beta emission occurs, the mass number of the daughter nucleus is the same as that of the parent nucleus while the atomic number of the daughter nucleus increases by one unit.

We can see this explanation above in the reaction described in the answer section.

When you increase the pressure, the molecules have less space in which they can move. That greater density of molecules increases the number of collisions. When you decrease the pressure, molecules don't hit each other as often and the rate of reaction decreases. Pressure is also related to concentration and volume.

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Answer:

In this instance, we apply Charles' Law, which states that a given amount of gas has a relationship between its volume and temperature while maintaining a constant pressure.

5,30L/298K=7,60L/T2 T2=7,60L/(5,30L/298K)=427,32K where V1 / T1 = V2 / T2

Explanation:

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Answer:

V = 100 ml

Explanation:

P1V1 = P2V2

P1 = 2.0 atm

V1 = 200ml

P2 = 4.0 atm

V2 = ?

(2.0)(200) = (4.0)V2

400 = (4.0)V2

V2 = 100

The new pressure will be

1000 L

, rounded to one significant figure.

Explanation:

Boyle's law states that when a gas is held at a constant temperature and mass in a closed container, the volume and pressure vary inversely. The equation to use is

P

1

V

1

=

P

2

V

2

.

Given

V

1

=

200

mL

×

1

L

1000

mL

=

0.2 L

P

1

=

700 mmHg

V

2

=

100

mL

×

1

L

1000

mL

=

0.1 L

Unknown

P

2

Equation

P

1

V

1

=

P

2

V

2

Solution

Rearrange the equation to isolate

P

2

and solve.

P

2

=

P

1

V

1

V

2

P

2

=

(

700

mmHg

×

0.2

L

)

0.1

L

=

1400 L

, which must be rounded to

1000 L

because all of the measurements have only one significant figure

Answer:

2:3

Explanation:

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Answer: Qualitative data typically consists of words while quantitative data consists of numbers.

Explanation:

Algae blooms are most often caused by eutrophication.

Algae blooms are are dense layers of tiny green plants that occur on the surface of lakes and other bodies of water when there is an overabundance of nutrients (primarily phosphorus) on which algae depend.

Algae species tend to proliferate in growth (bloom) in the presence of abundance nutrients. This abundance of nutrients is as a result of a process called eutrophication.

Eutrophication is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

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amount of electrons on their outer shell: 1 electron.

These elements have similar chemical properties because they have the same valence electrons.

A valence electron is just a negatively charged particle that could be transferred to and is found in the atom's outermost shell.

A pure substance made up entirely of atoms with the same number of protons in respective nuclei is known as an element.

Therefore, these elements have similar chemical properties because they have the same valence electrons.

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Based on the structure of meta-hydroxyacetophenone and para-hydroxyacetophenone, we can make an assessment of their relative acidity. In both compounds, the hydroxyl group (OH) is attached to the phenyl ring. The position of the hydroxyl group relative to the acetophenone moiety is what distinguishes the two isomers.

In meta-hydroxyacetophenone, the hydroxyl group is attached to the meta position, which means it is three carbons away from the carbonyl group (C=O). In para-hydroxyacetophenone, the hydroxyl group is attached to the para position, meaning it is directly opposite the carbonyl group.The acidity of a phenolic compound is influenced by the stability of the phenoxide ion formed when the hydroxyl group loses a proton (H+). The stability of the phenoxide ion is affected by the electron density and resonance stabilization in the phenyl ring.In the case of para-hydroxyacetophenone, the para position allows for greater electron delocalization and resonance stabilization within the phenyl ring. This increased stability of the phenoxide ion makes para-hydroxyacetophenone more acidic than meta-hydroxyacetophenone.
Therefore, we would expect para-hydroxyacetophenone to be more acidic than meta-hydroxyacetophenone due to the enhanced resonance stabilization of the phenoxide ion in the para position.

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Answer:23.976

Explanation:830j = 197.6 cal. 197.6/100g=1.976 degrees. plus 22 degrees =23.976

Answer:

it is ductile

Explanation:

i took the test

Answer:

b

Explanation:

Answer:

See explanation

Explanation:

Intermolecular forces are forces of attraction that exist between molecules of a substance in a particular state of matter.

The dominant intermolecular force of attraction in H2O is the hydrogen bond. The hydrogen bond exists between molecules of a substance when the substance is made of hydrogen atoms bonded to atoms of a highly electronegative element. Hence, strong hydrogen bonding accounts for the high boiling point of water.

The magnitude of hydrogen bonding between molecules depends on the electro negativity of the atoms to which hydrogen is bonded.

The more the electro negativity of the atoms to which hydrogen is bonded, the greater the magnitude of intermolecular hydrogen bonding.

Since the electro negativity of elements decrease down the group, the strength of intermolecular hydrogen bonding between the molecules decreases as follows;

H2O> H2S> H2Se> H2Te

all of the above are accurate step in the procedure to name a binary molecular compound using IUPAC nomenclature rules,

The International Union of Pure and Applied Chemistry is a scientific organisation. The International Union of Pure and Applied Chemistry (IUPAC) is a global organisation that represents chemistry as well as related sciences and technologies. IUPAC nomenclature of organic compounds refers to the systematic approach used for organic compound nomenclature as recommended by the International Union of Pure and Applied Chemistry (often abbreviated to IUPAC). The first step in writing a chemical name for a given structure b IUPAC is to identify the structure's main functional group. If the structure only has one functional group, it can be considered the primary functional group. There are three types of nomenclature: composition, substitute, and additive. The nomenclature was designed and developed by the International Union of Pure and Applied Chemistry (IUPAC).

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The equation for x as a function of time is x = -0.008t + 50. It will take 6250 seconds for an additional 50 grams of salt to dissolve, and the maximum amount of salt that will dissolve is infinite.

To express x as a function of time t, we need to integrate the given differential equation.

Given: dx/dt = 0.8 * (-0.004) * 2

Integrating both sides with respect to t, we get:

∫ dx = ∫ (-0.8 * 0.004 * 2) dt

Simplifying, we have:

x = -0.008t + C

Using the initial condition x = 50 when t = 0, we can solve for the constant C:

50 = -0.008 * 0 + C

C = 50

Therefore, the equation for x as a function of time t is:

x = -0.008t + 50

To determine how long it will take an additional 50 grams of salt to dissolve, we can set x = 100 (50 + 50) and solve for t:

100 = -0.008t + 50

-0.008t = 50 - 100

-0.008t = -50

t = 6250 seconds

So, it will take 6250 seconds for an additional 50 grams of salt to dissolve.

The maximum amount of salt that will ever dissolve in the methanol can be determined by finding the value of x as t approaches infinity. Since the coefficient of t is negative (-0.008), the term -0.008t will tend towards negative infinity as t increases. Therefore, the maximum amount of salt that will dissolve is when x approaches positive infinity.

In conclusion, x as a function of time t is given by x = -0.008t + 50. It will take 6250 seconds for an additional 50 grams of salt to dissolve. The maximum amount of salt that will ever dissolve is infinite.

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Explanation:

To change from m to cm, divide by 100

\( \frac{98.723}{100} \\ = \: 0.98723cm\)

The reaction is an addition reaction.

Addition reactions are chemical reactions involving 2 or more reactants reacting to produce a single product.

Addition reactions are different from decomposition reactions. In the latter, a single reactant decomposes to give two or more products.

In the illustrated reaction, Cl₂O5 and H₂O react together to form a single product, HCIO3.

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Answer:

Igneous Rocks are formed by cooling magma

Answer:

C. igneous

Explanation:

The following statements are correct 2 only.

A diamagnetic material is strongly attracted to a magnetic field. A material that retains its magnetism after being removed from a magnetic field is said to be ferromagnetic. Most transition metals and all lanthanide metals are ferromagnetic. Paramagnetic compounds are attracted to magnetic fields, whereas diamagnetic compounds are repelled by magnetic fields.

Paramagnetic compounds have unpaired electrons whereas in diamagnetic compounds all electrons have paired spins. They stick to ferromagnetic materials such as iron and ferrous objects such as steel. This includes everything from the steel body of your car to your refrigerator door. It is also attracted to nickel, cobalt, and other rare earth elements.

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Answer:

Correct option is D)

As in the given equation , the electrons are transferred from Hydrogen to Oxygen , hence Oxygen is reduced and electrons are accepted by Oxygen from Hydrogen , hence Hydrogen is oxidised . Now , both oxidation and reduction are going together , therefore it is a Redox (Reduction- Oxidation reaction) reaction . The opions (a) ,( b) and (d) are correct .

Explanation:

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Answer: i dont know

Explanation:

Answer: #1 deforestation

Explanation:

The nucleus more easily, increasing the probability of causing fission many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Fission can be caused by slow as well as fast neutrons. It is the energy of the neutron which determines its effectiveness in causing fission. Fast neutrons are more effective in causing fission. Hence, many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Fission is a nuclear reaction process in which the nucleus of an atom is split into two smaller nuclei with the release of a large amount of energy and two or three neutrons. Uranium-235 (U-235) and Plutonium-239 (Pu-239) are the most commonly used fissile materials, but other materials like U-234, U-236, and U-238 can also undergo fission. When a neutron is absorbed by the nucleus of a fissile material like U-235 or Pu-239, it becomes unstable and splits into two smaller nuclei with the release of a large amount of energy.

The fission process also releases two or three neutrons, which can cause further fission of other nuclei, leading to a chain reaction. The chain reaction can be controlled by using a neutron moderator, which slows down the fast neutrons, making them more effective in causing fission. The efficiency of the fission reaction depends on the energy of the neutron.

Fast neutrons are more effective in causing fission than slow neutrons, which have less energy. This is because fast neutrons can penetrate the nucleus more easily, increasing the probability of causing fission. Hence, many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

Fast neutrons are more effective in causing fission than slow neutrons, which have less energy.

This is because fast neutrons can penetrate the nucleus more easily, increasing the probability of causing fission. Hence, many nuclei like U234, U236, and U238 undergo fission only by fast neutrons.

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The unstable type of hemoglobin that cannot bind with oxygen is called Methemoglobin.

What is Hemoglobin?

Hemoglobin (Hb) is an oxygen-carrying protein present in the erythrocytes (red blood cells) that gives the cells their characteristic red color.

The primary function of hemoglobin is to transport oxygen (O2) from the lungs to the cells of the body's tissues and organs and carry carbon dioxide (CO2) back to the lungs to be exhaled.

There are several types of hemoglobin, which include fetal hemoglobin (HbF), adult hemoglobin (HbA), and abnormal hemoglobin.

The types of hemoglobin are based on their subunit composition and their oxygen binding properties.

Abnormal hemoglobin is hemoglobin with a change in its amino acid sequence, which changes its structural and functional properties.

The various types of abnormal hemoglobin include sickle cell hemoglobin (HbS), hemoglobin C (HbC), hemoglobin E (HbE), and met-hemoglobin (MetHb).

Methemoglobin is an unstable form of hemoglobin caused by a defect in the oxygen-binding site of the heme iron. Methemoglobin cannot bind to oxygen as effectively as normal hemoglobin.

Therefore, it cannot release oxygen to the body's tissues and organs, leading to tissue hypoxia (oxygen deprivation). This condition is called Methemoglobinemia.

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The number of molecules 5.87 ×10¹⁹ molecules. 12 mg (i.e 0.012 g) of C₆H₅NO₂ contains 5.87 ×10¹⁹ molecules.

Mass of C₆H₅NO₂ = 12 mg

Number of molecules of C₆H₅NO₂ =?

The next step is to change 12 mg to g.

1 mg = 10¯³ g

Therefore,

12 mg = 12 mg × 10¯³ g / 1 mg

12 mg = 0.012 g

We will then calculate the mass of 1 mole of C₆H₅NO₂.

1 mole of C₆H₅NO₂ = (12×6) + (5×1) + 14 + (16×2)

= 72 + 5 + 14 + 32

= 123 g

We will count the molecules in 12 mg (or 0.012 g) of C₆H₅NO₂.

From Avogadro's hypothesis,

1 mole of C₆H₅NO₂ = 6.02×10²³ molecules

123 g of C₆H₅NO₂ = 6.02×10²³ molecules

Therefore,

0.012 g of C₆H₅NO₂ = 0.012 × 6.02×10²³ / 123

0.012 g of C₆H₅NO₂ = 5.87 ×10¹⁹ molecules.

Thus, 12 mg (i.e 0.012 g) of C₆H₅NO₂ contains 5.87 ×10¹⁹ molecules.

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The system refers to the part of the chemical reaction that we are interested in studying, while the surroundings encompass everything else that is not part of the system. In this case, the system is the aqueous solution contained in the flask, where the chemical reaction is taking place.

The surroundings include the flask itself, the air surrounding the flask, and any other objects or substances that are not directly involved in the reaction. For example, if the flask is placed on a laboratory bench, the bench and the air in the room would be part of the surroundings.

To illustrate this concept further, let's consider an example. Imagine you have a flask containing water and you add an acid to it. The acid reacts with the water to produce a new substance. In this case, the system is the water and acid mixture in the flask, as it is the part of the reaction we are interested in studying.

The surroundings would include the flask, the air in the room, the bench the flask is resting on, and any other objects or substances in the vicinity. These surroundings are not directly involved in the chemical reaction but may still be affected by it. For instance, the reaction may release gas or heat, which could impact the air temperature or pressure in the surroundings.

Overall, understanding the concept of systems and surroundings helps us analyze and study chemical reactions in a more systematic and organized manner.

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