If you will add a 1/2 teaspoon of sugar in 2 tablespoon of water and stir and continually add another 1/2 teaspoon of sugar to the same solution,you will have a total of 2 1/2 tablespoon of sugar.


1. How many teaspoon of sugar completely solved in 2 tablespoon of water?What solution was formed?

2.How many teaspoon of sugar will no longer dissolve in 2 tablespoon of water?What do you call the solution?

3.If you continue to add sugar what will happen to the solution?​

Answer:

3

Explanation:

0.568 g of hydrogen peroxide were created. (to 3 sig figs).

A 30% solution of ice-cold sulfuric acid is electrolyzed to produce hydrogen peroxide. Peroxodisulphate is produced when acidified sulphate solution is electrolyzed at a high current density. Hydrogen peroxide is then produced by hydrolyzing peroxodisulphate.

1 hour = 3600 seconds

q = It = (0.893 A)(3600 s) = 3,214.8 C

So the number of moles of electrons that flow is:

n = (3,214.8 C) / (96,485 C/mol) = 0.0333 mol e-

0.5 × 0.0333 mol = 0.0167 mol

m = n × M = 0.0167 mol × 34.0147 g/mol = 0.568 g

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Answer:

NO ONE DOSE :(

Explanation:

Answer:

His gold foil experiment showed that the atom is mostly empty space with a tiny dense positively-charged nucleus. Based on those results, Rutherford was able to propose the nuclear model of the atom.

Camouflage is not a general adaptation which is therefore denoted as option A.

This is referred to as any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.

It is also called cryptic coloration, is a defense or tactic that organisms use to disguise their appearance, usually to blend in with their surroundings. Organisms use camouflage to mask their location, identity, and movement and it used by most prey to avoid predators, and for predators to sneak up on prey.

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Answer:

See explanation

Explanation:

The electron configuration of an atom in an element determines the property of the atom. The core electrons are found inside the atom while the valence electrons are found on the outermost shell of the atom.

For cobalt, the outermost shell electron configuration is; [Ar] 3d7 4s2. The 3d7 and 4s2 are found in the valence shell of cobalt.

For arsenic, the electronic configuration is [Ar] 3d¹⁰ 4s² 4p³. The valence electrons are 4s2, 4p3. The 3d electrons are found inside the arsenic atom.

In this given question, the decomposition of the compound ax2 is given by the chemical equation:

2 ax2(g) → 2 ax(g) + x2(g)

This can be read as: Two molecules of AX2 will break down into two molecules of AX and one molecule of X2.

In one experiment, the compound AX2 was measured at various times, and these data were recorded. Since the decomposition reaction is a first-order reaction, the data can be used to determine the rate constant k. The first order reaction is a type of chemical reaction in which the reaction rate depends on the concentration of only one reactant. For a first-order reaction, the rate equation is:

Rate = k [A]

Here, A represents the reactant, and k is the rate constant. The rate constant for a first-order reaction is a constant that depends only on the temperature of the reaction. It has units of s−1.In the experiment, the concentration of AX2 was measured at various times. These data can be used to determine the rate constant k. If we plot the natural logarithm of the concentration of AX2 versus time, we get a straight line whose slope is equal to -k. The equation for this line is:

ln [AX2] = -kt + ln [AX2]0

Here, [AX2] is the concentration of AX2 at time t, [AX2]0 is the initial concentration of AX2, and k is the rate constant. The value of k can be calculated from the slope of the line. If we know the value of k, we can calculate the half-life of the reaction, which is the time it takes for the concentration of AX2 to be reduced to half its initial value. The half-life of a first-order reaction is given by:

t1/2 = ln 2/k

The decomposition of the compound AX2 can be used to calculate the rate constant of the reaction using the given chemical equation:

2 ax2(g) → 2 ax(g) + x2(g)

This can be read as: Two molecules of AX2 will break down into two molecules of AX and one molecule of X2.

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The correct answer is ( C). The order of decreasing strength of intermolecular forces is HF > CO2 > O2.

This is because HF has the strongest intermolecular forces due to its ability to form hydrogen bonds, while CO2 has weaker intermolecular forces due to its linear shape and lack of polarity. O2 also has weak intermolecular forces due to its nonpolar nature.

The strength of intermolecular forces between molecules is generally determined by the polarity and size of the molecules. The greater the polarity or the size of the molecules, the stronger the intermolecular forces between them.

Out of the given compounds, the intermolecular forces in HF (hydrogen fluoride) will be the strongest. HF is a highly polar molecule due to the large electronegativity difference between hydrogen and fluorine atoms. The hydrogen end of the molecule has a partial positive charge, while the fluorine end has a partial negative charge. These partial charges allow for strong dipole-dipole interactions between HF molecules, which are the strongest type of intermolecular forces for polar molecules.

Between O2 (oxygen) and CO2 (carbon dioxide), CO2 will have stronger intermolecular forces. Although both molecules are nonpolar, CO2 is a larger molecule than O2 and has more electrons, which allows for stronger London dispersion forces. These forces arise due to temporary dipoles induced by fluctuations in the electron density of a molecule, and are the only type of intermolecular forces for nonpolar molecules.

Therefore, the order of decreasing strength of intermolecular forces for the given compounds is:

HF > CO2 > O2

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Zinc sulfate (ZnSO4) can serve as a good source of zinc for the body. It is a water-soluble salt that can provide zinc ions for absorption in the gastrointestinal tract.

Ingesting zinc ions has been shown to have some effect in reducing the length of a cold. Therefore, zinc sulfate can be an effective option for boosting zinc levels in the body and potentially supporting immune function during a cold.

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The theoretical yield refers to the maximum amount of product that can be formed based on stoichiometry and assuming complete conversion of reactants. It is calculated based on the balanced chemical equation and the amounts of the limiting reactant.

The actual yield, on the other hand, is the amount of product that is actually obtained from a chemical reaction. The name of the chemical product at the end of both reactions depends on the specific reaction being discussed. However, the mass of the chemical product that is measured is considered the actual yield. This is because the actual yield represents the amount of product that is obtained from the reaction under real-world conditions, whereas the theoretical yield is the amount of product that would be obtained if the reaction proceeded perfectly and without any losses. Therefore, the actual yield may be lower than the theoretical yield due to factors such as incomplete reactions, product loss during isolation, or impurities in the starting materials.

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Because it provides a very high concentration compared to what is possible with saline.

A high chloride ion concentration shifts the equilibrium position to the right due to Le Chatelier's principle.

Uses of HCL -

Hydrogen chloride is produced when many plastics are burned. Acute (short-term) inhalation exposure in humans can cause eye, nose, and respiratory tract irritation and inflammation, and pulmonary edema.

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Answer:

\(\boxed {\boxed {\sf V_2=75 \ mL}}\)

Explanation:

Since the pressure is constant, the only variables we need to work with are temperature and volume. We will use Charles's Law, which states the volume of a gas is directly proportional to the temperature. The formula is:

\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)

Originally, the gas was 50 milliliters at 20 degrees celsius. Substitute these values into the left side of the equation.

\(\frac{50 \ mL}{20 \textdegree C}=\frac{ V_2}{T_2}\)

We don't know the volume of the new gas, but we know the temperature was changed to 30 degrees celsius.

\(\frac{50 \ mL}{20 \textdegree C}=\frac{ V_2}{30 \textdegree C}\)

Since we are solving for the new volume, we must isolate the variable. It is being divided by 30 °Cand the inverse of division is muliplication. Multiply both sides by 30 °C.

\(30 \textdegree C*\frac{50 \ mL}{20 \textdegree C}=\frac{ V_2}{30 \textdegree C}* 30 \textdegree C\)

\(30 \textdegree C*\frac{50 \ mL}{20 \textdegree C}= V_2\)

The units of degrees celsius cancel, so we are left with milliliters as the units.

\(30*\frac{50 \ mL}{20}= V_2\)

\(\frac{1500 \ mL}{20}= V_2\)

\(75 \ mL=V_2\)

The new volume of the gas is 75 milliliters.

(d) 2.0 × 10-:HCN is an acid, and CN- is its conjugate base. As a result, the Ka of HCN must be used to determine the Kb of CN-.

The chemical equation of HCN in water is HC ≡ N + H2O ⇆ CN- + H3O+. The balanced equation for the HCN dissociation reaction is as follows:HCN ⇆ H+ + CN-. The equilibrium constant for the reaction is the acid dissociation constant, or Ka, which is 4.9 × 10-10 at 25°C.

The Ka equation is:Ka = [H+][CN-]/[HCN].The equilibrium constant for the reaction is the base dissociation constant, or Kb, which is the product of the concentrations of the products divided by the concentration of the reactant, CN-. The expression for Kb is as follows:Kb = [HCN]/([H+][CN-]).When water and HCN are combined, the equilibrium constant is established.Kw = Ka × Kb = [H+][OH-].Kw, or the ion-product constant for water, equals 1.0 × 10-14 at 25°C.Ka = [H+][CN-]/[HCN].Kb = [HCN]/([H+][CN-]).Kw = Ka × Kb = [H+][OH-].Therefore, the Kb equation is:Kb = Kw/Ka = 1.0 × 10-14/4.9 × 10-10= 2.0 × 10-5.

Summary:The base dissociation constant, or Kb, for CN- at 25°C is calculated using the acid dissociation constant, or Ka, for HCN. The value of the Kb for CN- is 2.0 × 10-5.

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5/16 = 0.313

\(\sqrt{1/16}\) = 0.25

0.38(10) = 3.8

\(\sqrt{0.09}\) = 0.3

Answer:

(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl

Explanation:

This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.

Answer:

Action force and Reaction force

Explanation:

The action force which is the balanced rock pushing down due to gravity and the reaction force pushing the equal amount of force. These two things are stated in Newtons third law, where he states that "Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first." Also, he states that "all forces acts in pairs," meaning that every force exerted, there is an opposite force on the first

The concentration of A after 30 seconds when the given reaction obeys the rate law rate = k[A]²[B].

We use the initial concentration of A and B and the rate constant of the reaction to find the rates at these concentrations. Using the integrated rate law for a second-order reaction, we find the concentration of A after 30 seconds to be 0.0934 M.

Given reaction obeys the rate law, rate=k[A]²[B].

Here, the initial concentration of A= 0.10 M,

initial concentration of B = 0.05 M, and

rate constant, k = 2.0 × 10⁻⁴ M⁻¹s⁻¹

We have to find the concentration of A, after 30 seconds.

To find the concentration of A, we need to know the rate at 0.10 M and 0.05 M. Therefore, we have to calculate the rates at these concentrations.

rate1 = k[A]²[B]

= (2.0 × 10⁻⁴ M⁻¹s⁻¹)(0.10 M)²(0.05 M)

= 1.0 × 10⁻⁷ M/srate2

= k[A]²[B] = (2.0 × 10⁻⁴ M⁻¹s⁻¹)(0.09 M)²(0.04 M)

= 6.48 × 10⁻⁸ M/s

Using the integrated rate law for a second-order reaction: [A] = [A]₀ - kt where [A]₀ = initial concentration of A, k = rate constant, and t = time in seconds.

We know [A]₀ = 0.10 M and k = 2.0 × 10⁻⁴ M⁻¹s⁻¹.

Substituting the values in the above equation, we get: [A] = [A]₀ - kt= 0.10 M - (2.0 × 10⁻⁴ M⁻¹s⁻¹)(30 s)≈ 0.0934 M

Therefore, the concentration of A in the vessel after 30 seconds is 0.0934 M.

This question requires us to calculate the concentration of A after 30 seconds when the given reaction obeys the rate law rate = k[A]²[B].

We are given the initial concentration of A and B and the rate constant of the reaction. To find the concentration of A after 30 seconds, we need to calculate the rates at the initial concentrations of A and B.

Using the integrated rate law for a second-order reaction, we can find the concentration of A at any given time. We substitute the given values in the formula and solve for [A]. We get the concentration of A as 0.0934 M after 30 seconds. This calculation is based on the assumption that no other reaction is important.

The concentration of A after 30 seconds when the given reaction obeys the rate law rate = k[A]²[B]. We use the initial concentration of A and B and the rate constant of the reaction to find the rates at these concentrations. Using the integrated rate law for a second-order reaction, we find the concentration of A after 30 seconds to be 0.0934 M. This calculation assumes that no other reaction is important.

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The final volume of the balloon will be 316.6 ml

Given,

V1= 250 ml

P1= 760 mm Hg

V2=?

P2= 600 mm Hg

From the given question, the final volume can be calculated using Boyle's law.

The link between a gas's pressure, volume, and temperature is shown by Boyle's law. It asserts that under constant temperature, a gas's pressure is inversely proportional to its volume.

Boyle's law is valid only for ideal gas.

Pressure and volume are represented by a rectangular hyperbola on the graph.

P ∝ 1/V or PV = K

∴P1 x V1  = P2 x V2

⇒ 250 x 760 = 600 x V2

⇒190000 = 600 x V2

⇒190000/ 600 = V2

⇒V2 =  316.6 ml

Hence, the new volume of the balloon will be 316.6 ml.

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Answer:

Los alcoholes de cadena larga tienen altos puntos de ebullición. Además, cuando tienen ramificación, el punto de ebullición disminuye

Explanation:

El punto de ebullición de un alcohol se ve afectado, las interacciones dipolo-dipolo, las fuerzas de dispersión de van der Waals y los enlaces de hidrógeno.

Las fuerzas de las interacciones dipolo-dipolo y los enlaces de hidrógeno son más o menos las mismas en la serie de alcohol en serie, sin embargo, a medida que aumenta la longitud del alcohol, las fuerzas de dispersión de van der Waals aumentan debido al aumento de la atracción dipolo-dipolo.

Sin embargo, a medida que el alcohol se vuelve más ramificado, el área de la superficie aumenta, lo que disminuye las fuerzas de van der Waals, de modo que se requiere menos fuerza para separar las moléculas y hervir una muestra del alcohol.

Por tanto, los alcoholes de cadena larga tienen puntos de ebullición elevados. Además, cuando tienen ramificación, el punto de ebullición disminuye.

Answer:

Fluorine    

Chlorine

Bromine

Iodine

Boiling point increases as you go down the group v11

Explanation:

The elements of Group VII  are the halogens consisting of f fluorine (F), chlorine (Cl), bromine (Br), iodine (I).  All of which are non metals and exists  as diatomic molecules - F2, Cl2, Br2, I2 with  intermolecular attractions between the two molecules of each element held by Van der Waals dispersion force.

Moving down the group, the size of the atoms increases in size from Fluorine, F2 and Chlorine, Cl2 which are gases to Bromine , Br2 which exists as a liquid to solid, Iodine, I2. This attributes to the increasing in Strength of the Van der Waals forces as you go down the group. In order to break the vanderwaals forces , More heat energy is required to change thier states  leading to the increase in  boiling point going down the group.

Fluorine    

Chlorine

Bromine

Iodine

Boiling point increases as you go down the group

Answer: The speed of the skateboard decreases compared to the wooden box

Explanation: well, umm... if you placed a refrigerator on a skateboard... that will be difficult to move, if anything it will brake the board!

A wooden box is much lighter than a refrigerator

The diagram that show the correct electron configuration is the second option. ⬆⬇1s,  ⬆⬇2s, ⬆⬆⬆2p.

The electronic configuration is the representation of electron present indifferent energy levels is an atom. The different type of orbitals are s, p, d, and f.

Thus, the correct option is 2, ⬆⬇1s,  ⬆⬇2s, ⬆⬆⬆2p.

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The physical mechanism causing the change in strength when using brine as the pore fluid is the presence of salt ions that weaken the interparticle bonds. Salt can reduce the shear strength of clays by increasing the repulsive forces between clay particles.

The strength of clay types at 50% water content can vary depending on whether DI water or brine is used as the pore fluid. Generally, there is a significant difference in strength between the two.

The presence of salt in brine can have an effect on the shear strength of clays. When salt is dissolved in water, it creates ions that can interact with the clay particles. These interactions can lead to the formation of electrical double layers around the clay particles, which can increase the interparticle repulsion and decrease the shear strength of the clay.

On the other hand, when DI water is used as the pore fluid, there is no presence of salt ions to affect the interparticle interactions. As a result, the clay particles can have stronger bonds and higher shear strength compared to when brine is present.

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Answer: ;)

Explanation:

Molarity of a salt solution with a volume of 250 mL that contains 0.70 mol NaCl is 2.8.

Molarity = (No. of moles of solute ÷ Volume of solution in liters)

Molarity = (0.70 ÷ 0.250)

Molarity = 2.8

Molarity of a given solution is known as the total number of moles of solute per litre of the solution.  A solution that is 1.00 molar (written 1.00 M) contains 1.00 mole of solute for every liter of solution.

Therefore, Molarity of a salt solution with a volume of 250 mL that contains 0.70 mol NaCl is 2.8.

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Answer:

725000

Explanation:

hope you find this helpfull

The statement that correctly describes one of the bulk elements necessary for life is: 3. Carbon (C) has 4 valence electrons and is likely to form covalent bonds.

Carbon is a crucial element for life as it forms the backbone of organic molecules, which are the building blocks of living organisms. In its atomic structure, carbon has six electrons, with four of them located in its outermost energy level, known as the valence electrons. These valence electrons determine how carbon interacts with other atoms to form chemical bonds.

Carbon is unique in that it can form strong covalent bonds with other carbon atoms, creating long chains or rings, which serve as the basis for complex organic molecules. The four valence electrons of carbon allow it to share electrons with other atoms, leading to the formation of stable covalent bonds. These covalent bonds involve the sharing of electron pairs between carbon and other atoms, such as hydrogen, oxygen, nitrogen, and many others.

This ability of carbon to form covalent bonds with a variety of elements is the foundation of organic chemistry, which is the chemistry of life. Carbon-based compounds, also known as organic compounds, include essential molecules like carbohydrates, lipids, proteins, and nucleic acids, which are vital for biological processes.

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The pH values at which amino acid have the best buffering capacity are 2.34 and 9.69.

The largest buffering capabilities of monoamino monocarboxylic acids are found in the two pH ranges closest to their pK′ values. Buffer capacity refers to the ability of a solution to resist changes in pH which can be either absorbing or desorbing H+ and OH- ions. It is the moles of an acid or base required to change the pH of a solution by 1, divided by the pH change and the volume of buffer in liters. Buffer capacity is a unitless number. When an acid or base is added to a buffer system, the pH change can be small or large which depends on both the initial pH and the capacity of the buffer to resist change in pH. Hence, a buffer resists changes in pH due to the addition of an acid or base though consumption of the buffer.

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The tool will ryan find helpful at work if he has questions about the chemicals that he may be exposed to at work is  safety data sheet (SDS), material safety data sheet (MSDS) or product safety data sheet (PSDS).

Safety data sheet (SDS) is a document containing information on occupational health and safety when using various substances and products. Safety Data Sheets are a widely used system for cataloging information about chemicals, chemical compounds and mixtures. SDS information may include safe use and potential hazards associated with a particular material or product, as well as spill control procedures. Older SDS formats may vary by national source, depending on national requirements. However, the new SDS format is internationally standardized.

Material Safety Data Sheets focus primarily on the hazards of working with substances in occupational settings, not intended for general consumer use. There is also an obligation to properly label substances based on their physico-chemical, health or environmental risks. Labels may contain hazard symbols, such as European Union standard symbols. The same product (for example, paint sold under the same brand name by the same company) may have different formulations in different countries. The formulations and hazards of products using generic names may vary between manufacturers in the same country.

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