compare the structures of cellulose and amylose. what is the same about the two figures? what is different? what stabilizes these structures

A wet cell is an electrochemical cell in which the electrolyte is a liquid,the given statement is true.

A device known as an electrochemical cell has the ability to produce electrical energy from chemical processes taking place inside of it or utilize electrical energy from external sources to speed up chemical reactions inside of it. The energy in chemicals may be transformed into electrical energy or vice versa using these devices.

A galvanic cell or voltaic cell is an electrochemical device that uses spontaneous redox reactions to transform chemical energy into electrical energy. Example: The typical 1.5 volt cell used in consumer electronics is an illustration of a galvanic cell.

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Potassium dihydrogen arsenate has a more stable excited state than potassium nitrate, so the emitted light is dimmer.

Potassium nitrate (KNO3) is an ionic white crystalline salt made up of potassium ions and nitrate ions. It is also known as saltpeter or nitre. Manufacturing fertilizers, pesticides, glass, fireworks, explosives, and rocket fuel are among the uses of potassium nitrate. When added to meat, it triggers a reaction between the myoglobin and hemoglobin in the blood, giving the meat its red color. It is also used as a food preservative. Additionally, some toothpastes use it as an additive to lessen tooth sensitivity. When it comes to human consumption, potassium nitrate use is strictly regulated because it is toxic at high doses.

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A chemist counts the quantity of mercury present in sediment samples collected from three different riverbanks (the source, the midway point, and the mouth).

A scientist who has received training inside the study of chemistry is known as a chemist (from the Greek chm(a) alchemist; replacing chymist from Latin “ alchemist). Chemists look into the composition and characteristics of stuff.

A pharmacist is a medical professional who helps prepare, controls, formulates, preserves, distributes, and advises and guides the general public on the proper use of medications to achieve maximum results. They are also referred to as chemists (Commonwealth English), druggists (North American, and, archaically, Commonwealth English) and chemists (Commonwealth English).

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The three forms of carbon dioxide in the blood ranking them from greatest to least amount carried, the sequence would be bicarbonate ion, carbamino hemoglobin, and dissolved in plasma.

Most carbon dioxide (about 70%) is transported as bicarbonate ions in the plasma. An increase in carbon dioxide in the blood will cause a slight increase in H+ concentration (drop in pH).

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The room temperature BCC single-phase solid solution of carbon in iron is known as: B. Ferrite

ferrite is a ceramic-like substance having magnetic characteristics that may be used in many different kinds of electrical equipment. Ferrite are polycrystalline, or made up of many tiny crystals, and are hard, brittle, iron-containing, often gray or black materials.

Temperature is a unit of measurement that may be represented on a variety of scales, including Fahrenheit and Celsius. Temperature shows the direction of the spontaneous movement of heat energy, i.e., from a hotter body (one with a higher temperature) to a colder body (one at a lower temperature).

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The kinetics of first order governs nuclear decay. In the event that a sample degrades from 55.4 g - 31.7 g after 3.09 minutes, what is the polonium-218 half-life?

Polonium is employed in research and antistatic devices because it is an alpha-emitter. It serves as a dominant male source there in form of a small layer on a steel disc. Eliminating static electricity from processes like rolling wire, paper, and sheet metal.

For information pertaining to the periodic table chemical element polonium, please visit its element page. The chemical element of polonium is called polonium-218, and it has a half-life of 3.10 minutes and a relative atomic mass of 218.008966.

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Mole fraction for silver= 0.2317643/0.3079193

                                     = 0.7526787

Mole fraction for gold=0.076155/0.3079193

                                    =0.2473212

What is Molar Fraction?

The mole fraction is the product of the number of molecules of a specific component in a mixture and its total molecular weight. It serves as a means of indicating how concentrated a solution is.

It is a unit of concentration, defined as the product of the moles of a component and the moles of the entire solution. When all the parts of a solution are summed up, their mole fraction equals 1.

molar mass of silver = 107.8682g/mol

Molar mass of gold= 196.96657g/mol

Therefore mole = mass/molar mass

For silver: 25g/107.8682g/mol = 0.2317643mol

For gold: 15g/196.96657g/mol= 0.076155mol

Total number of mole= 0.2317643+0.076155

                                    = 0.30791193mol

Mole fraction for silver= 0.2317643/0.3079193

                                      = 0.7526787

Mole fraction for gold=0.076155/0.3079193

                                     =0.2473212

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Na2so3 is the empirical formula for a compound that, by mass, contains 29% NA, 41% S, and 30%.

The empirical formula of a chemical compound in chemistry is the simplest whole number ratio of atoms in a compound. Two simple examples of this concept are the empirical formulas of sulfur monoxide, SO, and disulfur dioxide, S2O2. An empirical formula is a compound's chemical formula that only specifies the ratios of the elements it contains and not the precise number or arrangement of atoms. This would be the compound's element with the lowest whole number ratio.

1. To solve an empirical formula problem, you must first determine the mass percentage of the constituent constituents.

2. Next, convert the percentage to grams.

3. Subtract each mass from its corresponding molar mass.

4. Select the moles answer that is the smallest and divide all numbers by that.

1. Change every percentage to grams.

29% Na = 0.29g

41% S = 0.41 g S

30% O = 0.30 g O

2. Change every amount to moles.

0.29 g Na = 0.01261… moles Na

0.41 g S = 0.01278… moles S

0.30 g O = 0.01875 moles O

3. Divide each mole by the smallest one, then roughly

0.01261 mol Na /0.01261 approximately 1

0.001278 mol S/0.01261 approximately 1(rounded from 1.01348…)

0.01875 mol O/0.01261 approximately 1.5(rounded from 1.486915

4. Since one of the elements was rounded to a non-whole integer, we must multiply each element by 2 to obtain whole numbers.

Na: 1 * 2 = 2

S: 1 * 2 = 2

O: 1.5 * 2 = 3

5. Based on the numbers above, create the equation using subscripts for each element.

6. sodium thiosulfate (Na2S2O3)

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The increase in the ocean's average water temperature during mid months of the year may be associated with the summer season and therefore those cities should be located in the northern hemisphere.

Temperature varies in the Hemispheres due to the amount of solar radiation received by the earth's surface, which is higher during mid-months (i.e. June, July and August) in the northern hemisphere.

Therefore, with this data, we can see that temperature varies in the hemispheres according to the month which is associated with the solar radiation received in these months.

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The selenium ion is represented as Se4+, Barium ion is represented as Ba2+ and Phosphorus occurs as phosphate ion i.e., PO43-.

The chemical species that contains a positive charge is known as cation while the chemical species consisting of a negative ion is known as anion.

Selenium is a metal, therefore is exist as a cation with Se4+ representation having +4 charge. Barium is a metal, thus it exist as a cation with Ba2+ representation having +2 charge while phosphorus always occurs as a phosphate ion i.e., PO43- which is an anion as phosphorus is a non-metal.

Therefore, the representation of  the ions are given above.

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In the E2 reaction, the percentage of formation of 1- butene was 20.7%.

The E2 reaction is defined as the process that takes place in one-step, and the E1 reaction is defined as the two-step mechanism. The numbers are used to represent the kinetics of the reaction rather than the number of steps in the mechanism.

E2 is bimolecular (second-order) kinetics, whereas E1 is unimolecular (first-order) kinetics. The three key factors that affect E1 elimination reactions are the solvent type, the leaving group's shape, and the carbocation's stability.

Hence, the percentage of formation of 1- butene was 20.7% and the reason is explained above.

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2.5 ml and 3 ml of solution, respectively, are needed to make the final concentration of.

Standard addition, internal standard, and external standard techniques to quantitation all employ calibration solutions. Calibrants can be made gravimetrically using reference standards or pure reference materials, but they can also be made on a volumetric or other fraction basis.

Calculate the volume of stock solution needed for each calibration standard by deciding on its number (minimum 5) and concentration. As often as necessary, repeat the treatment. Select and create the dilution solution (such as a matrix solution or 1% acid, for example). Both the working curve method and the standard addition method can be used to calibrate an instrument.

Calibration standard solution is the solution prepared of the known concentration for the plotting of standard curve.

For preparing the solution of known concentration and volume, the equation imputed is :

M1V1=M2V2

Where M1 and V1 are molarity and volume of known solution

M2 and V2 are molarity and volume of solution to be prepared.

Given, volume to be prepared V2 : 25 ml

concentration to be prepared : M_2:1×〖10〗^(-5) M

concentration of given solution : M_1:1×〖10〗^(-4) M

1×〖10〗^(-4)×V_1=1×〖10〗^(-5)×25

Volume of solution required is 2.5 ml.

The volume required to prepare 10 ml solution of 3×10-5 M is:

1×10-4×V1=3×10-5×10

Volume = 3 ml.

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The given redox reaction,  Cu(s)+2AgNO3(aq)⟶2Ag(s)+Cu(NO3)2(aq).

The substance gets oxidized = Cu The substance gets reduced = Ag + The oxidizing agent  =  Ag + The reducing a cu Ag

Reason:

Redox is a type of chemical reaction in which the oxidation states of the substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a decrease in the oxidation state.

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The formation of the crystalline NaCl lattice from sodium cations and chloride anions is highly exothermic and more than compensates for the endothermicity of the electron transfer process. In other words, the formation of ionic compounds isn't exothermic because sodium wants to lose electrons and chlorine wants to gain them; rather, it's exothermic because of the large amount of heat released when sodium and chlorine ions coalesce to form a crystal lattice.

To conduct nerve impulses, contract and relax muscles, and maintain the right ratio of water and minerals, the human body needs a modest quantity of sodium. For these essential processes, it is estimated that humans require 500 mg of sodium salt every day.

A nose, throat, and eyes might get irritated when exposed to low amounts of chlorine. At greater concentrations, breathing chlorine gas may alter respiratory patterns, cause coughing, and harm the lungs. Chlorine exposure might cause serious additional symptoms. Chlorine exposure may be harmful to workers.

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A process employed entropy was 160.6 J/mol*K again for decomposition if 1 mol calcium calcite to dioxide and white precipitated oxide at 25 °C.

One or more substances—known as reactants—are transformed into one or more other substances—known as products—in a chemical reaction. Substances are composed up of chemical components or chemical elements.

The five basic types of chemical processes are synthesis, breakdown, one, double replacement, and combustion. By analyzing both reactants and products, you can assign a reaction to one of these categories.

CaCO3(s) → CaO (s) + CO2 (g)

ΔS° = (1 mol) [ΔS° for CaO (s)] + (1 mol) [ΔS° for CO2(g)] – (1 mol)[ΔS° for CaCO3(s)]

= (1 mol) (39.8 J/mol K) + (1 mol) (213.7 J/mol K) – (1 mol) (92.9 J/mol K)

= 160.6 J/K

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The parameters held constant in Experiment 1 are pressure and number of moles. The parameters held constant in Experiment 2 are temperature and number of moles.

What is apparent molecular weight of air?

The sum of the products of the mole fractions of each component times the molecular weight of that component is defined as apparent molecular weight.

What is pressure and temperature?

The force of all gas particle/wall collisions divided by the area of the wall is defined as pressure (P): Pressure is one of the primary observable quantities of this phase of matter; it is exerted by all gases.

Temperature is a measure of how hot or cold something is represented in terms of one of several scales, including Fahrenheit and Celsius. The direction in which heat energy will spontaneously flow is indicated by temperature.

The parameters held constant in Experiment 1 are pressure and number of moles. The parameters held constant in Experiment 2 are temperature and number of moles.

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Geometric isomers are coordination compounds that have two or more of the same atom kinds, numbers, and bond types.

Geometric isomers are two coordination compounds with identical ligands that are not mirror images of one another but are positioned differently in space around the central metal ion. Trans isomers have identical ligands across from each other, whereas isomers with identical ligands adjacent to each other are referred to as cis isomers.

The only compounds with geometric isomerism are square planar and octahedral. Tetrahedral compounds do not exhibit geometric isomerism since each Ligand is positioned in the same way around the centre metal atom or ion in space. ​

Hence, coordinating substances known as geometric isomers include two or more of the same atom types, numbers, and bond types. ​

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Cameron used ounces of hydrochloric acid in one experiment. She used ounces of the acid in a second experiment. In second experiment, She used 2 ounces of the acid

Amount required is x = 3/8 Given: Cameron used 1 ounces of hydrochloric acid in one experiment. She used 2 ounces of the acid in a second experiment.

To find: How much more acid did Cameron use in the second experiment?

Solution:In one experiment, Cameron used 1 ounces of hydrochloric acid i.e 13 = 1

In second experiment, She used 2 ounces of the acid. i.e. 21 = 1 17 Let x amount more she used then experiment 1 in experiment 2.

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Measurements of fossilized tree rings from the Cretaceous period is a paleoclimate proxy. -database of satellite temperature data,

An animal or plant from a previous geologic era that has been preserved in the Earth's crust as a fossil, remnant, impression, or trace. The main repository for knowledge regarding the evolution of life on Earth is the complex of information preserved in fossils found all across the world.

fossils of dinosaurs discovered in Alberta, Canada. Only a small percentage of extinct species have been preserved as fossils, and often only those with a sturdy skeleton are capable of doing so. A calcareous skeleton or shell is present in the majority of major groups of invertebrate creatures (e.g., corals, mollusks, brachiopods, bryozoans). Other types have silicon dioxide or calcium phosphate shells (both of which are found in the bones of vertebrates).

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The correct order of the scientists who made significant contributions to our understanding of the structure and function of DNA is II, I , III, V, IV.

In molecular biology, DNA is describes as the most important component that carries genetic information.

In DNA, the particular information is stored which is processed to manufacture large macro-molecules such as proteins.

The genetic information and instructions are stored in large structures called chromosomes which are found in each cell.

Great number of short fragments of DNA join together to form chromosomes which play their role in mutation, replication, gene expressing and encoding of information.

Simply put, detailed 3D-model of DNA was suggested by Crick and Watson in 1993 which shows that DNA  is a double helix structure made up of nucleotide chains and nitrogenous bases.

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The limiting reagent in this reaction is the hydrogen chloride (HCl).

What is reagent?
A reagent, also known as an analytical reagent, is a substance as well as compound that is added to a system in chemistry to bring about a chemical reaction or check to see if one occurs. Although the terms "reagent" and "reactant" are frequently used interchangeably, "reactant" refers to a substance that is consumed during a chemical reaction. Despite being a part of the reaction mechanism, solvents are not typically referred to as reactants. Catalysts are not reactants because they are not consumed by the reaction. The reactants in biochemistry are frequently referred to as substrates, particularly in relation to enzyme-catalyzed reactions.

The limiting reagent in this reaction is the hydrogen chloride (HCl). This is because it requires more moles of HCl than ammonia to produce ammonium chloride (NH4Cl). The number of moles of HCl is 0.0998, while the number of moles of ammonia is 0.0498, so HCl is the limiting reagent.

The amount of NH4Cl that will be formed will be 4.98 g, since this is the amount of the limiting reagent, HCl.

The pressure of the gas remaining in the flask will be unchanged, since no gas is consumed in the reaction, only solids. Therefore, the pressure will remain at 0.50 atmospheres.

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According to the claim that nuclear decay follows first-order kinetics, the sample's original mass is 25.0 g.

The force found in a protons and neutrons, or core, is referred to as nuclear energy. All everything in the cosmos is made up of microscopic building blocks called atoms, and the nucleus is held together by energy.

An enormous quantity of radioactive material might be spilled into the atmosphere in the event of a nuclear facility meltdown or explosion. If there had been an explosion, everyone inside the nuclear site would likely be poisoned and potentially hurt.

Briefing:

Expression for rate law for first order kinetics is given by:

t = 2.303/k * log(a/(a - x))

where,

k = rate constant  = 0.178 days^-1

t = time passed by the sample = 15days

a = original or initial amount of the reactant

a - x = amount left after decay process = 1.73g

Now put all the given values in above equation, we get

15=(2.303/0.178) * log (a/1.73)

log (a/1.73) = 15 * 0.178/2.303

a/1.73 = 10^( 15*0.178/2.303)

a = 1.73 * 10^( 2670/2303)

a = 1.73 * 10^(1.15935736)

a = 1.73 * 14.433024871

a = 24.9691330268

Therefore, a is approximately 25 grams .

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Compound              Ionic or Covalent                  Formula

sodium oxide          Ionic                                     Na2O                                      

iron(III) bromide        Ionic                                    FeBr3                                  

sodium carbonate       Ionic                                 Na2CO3                                  

carbon tetrachloride     covalent                         CCl4                                  

nitrogen tribromide      covalent                            NBr3

Ionic bonds, which occur when two negatively charged ions join forces with positively charged ones, are formed when one atom transfers electrons to the other. Ionic bonds may be seen in the chemical compound sodium chloride.

A: The oxygen molecule is held together by two covalent bonds because the two oxygen atoms share two pairs of electrons. Two atoms, in this case oxygen and hydrogen, share electrons to form covalent bonds. Each end of the V-shaped H2O molecule assumes a slightly different charge as a result of the uneven attraction of oxygen and hydrogen to the shared electrons.

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Answer: b

Explanation:

Water desk elevation is the upper or below surface of the groundwater, when the soil or underlying rock material is wholly saturated with water. The water table can be contamination of ground water by hazarodus wastes, fertilisers, pesticides, acid rain etc

How can a element contaminate water table?

The water desk elevation of the Clearwater lake isn't always given. Assuming, the water desk elevation of B1 is 171ft. We recognize the idea that water flows from higher elevation to lower elevation. So the wells having elevation much less than 171 feet gets infected via way of means of B1 contaminants, however the ones are having better elevation that 171ft will no longer get infected.

And approximately the route of infected water, the infected water will float closer to the course in  the Wells of decrease elevation than 171ft.

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The structure of the phosphite anion is a "T" shaped structure as it contains three oxygen atoms one with double bond with the phosphate atom.

Anion is a negatively charged ion that attracts the anode in electrolyte solution. The phosphite anion contains three oxygen atoms with one of them having double bond with the phosphate atom.

   According to Lewis structure the phosphite anion would be a "T" shaped structure. As we know, Lewis structure gives us the idea of how many electrons are donated or shared in order to form a covalent bond.

    Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

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The molar mass of a 4.80 g sample of gas exerting 0.800 atm of pressure at 295 k in a 7.00 l container is 253.969g/mol.

It is given that the mass of the sample is 4.8g and it exerts a pressure of 0.8atm at 295K in a 7L container. According to the ideal gas law,

PV =nRT

By rearranging this formula we get,

n = PV/RT

On plugging the values of P, V, R and T we get

n = 0.8x7/295

n = 5.6/295

n = 0.0189 moles

The moles of the gas are 0.0189. The molar mass can be computed by,

Molar mass = mass of the gas/moles of the gas

Molar mass = 4.8/0.0189

Molar mass = 253.968g/mol

Therefore, the molar mass of the gas is 253.969g/mol

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MnO4 is disappearance at a rate of 4.0 x 10-4 mol/L at the same period.

You will need a calibrated burette, a burette stand, numerous beakers or Erlenmeyer flasks, a measured amount of your analyte, and a significant amount of your titrant to perform a titration. Start by adding a little amount of color indicator to the analyte in your beaker.

With the use of an indicator, the 'end point' of the titration is found when the color of the solution changes as a result of neutralization. It is feasible to link the concentration of the acid to the concentration of the base by calculating the volume of titrant necessary to achieve the "end point."

40 cm^3 diluted to 250 cm^3 means the dilution ratio of 250/40 = 6.25 times. Hence, the NaOH concentration is reduced by 1/6.25 = 0.16 times.

20 cm^3 is 0.02 dm^3.

That much of 0.05 M sulfuric acid contains 0.02 * 0.05 = 0.001 moles of H2SO4.

It reacts with NaOH at 1:2 molar ratio, which means 0.002 moles of NaOH were titrated.

That amount is found in 25 cm^3 = 0.025 dm^3 of the diluted solution, which yields its concentration to be 0.002 / 0.025 = 0.08 M.

Multiplying that result by dilution ratio gives 6.25 * 0.08 M = 0.5 M as the original concentration.

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Ferromagnetic materials can be permanently magnetized whereas paramagnetic ones cannot because in ferromagnetic material the electron spin is in the same direction whereas in the paramagnetic material the electrons spin is in all direction.

A net magnetic moment is associated with each of the atom in the paramagnetic and the ferromagnetic materials. the ferromagnetic is permanently magnetized as the in case of ferromagnetic material the electron spin is in same direction. and ferromagnetic material shows strong attractive or repulsive force when ferromagnetic material introduced to the permanent magnet.

In the case of paramagnetic material the electrons spin is in all the direction thats why paramagnetic material cannot be permanently magnetized.

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SO₄⁻² (aq) + Ca⁺₂(aq) → CaSO₄(s)

CO₃⁻²(aq) + Cu⁺²(aq) → CuCO₃(s).

when you add sodium chloride to the solution, no precipitate forms. when you add sodium sulfate to the solution, a white precipitate forms. you filter off the precipitate and add sodium carbonate to the remaining solution, producing another precipitate.

When sodium chloride (NaCl) is added to the solution, sodium chloride  dissociates and forms the ions Na+ and Cl-. The anion can be form salts with the other cations presented in the solution. According to the solubility table of the salts, AgCl is a nonsoluble salt, and so, it was expected to form a precipitate. Perhaps, the concentration was not higher enough to do this.

When sodium sulfate (Na2SO4) is added, sodium sulfate dissociates and forms Na+ and SO₄⁻², the sulfate ion can react with the other cations. According to the solubility table, the salt CaSO4 (Ca is from group 2) is nonsoluble, so it will be formed. The net ionic equation represents the ions in solution that reacts:

Na⁺(aq) + SO₄⁻² (aq) + Ca⁺₂(aq) → Na⁺(aq) + CaSO₄(s)

SO₄⁻² (aq) + Ca⁺₂(aq) → CaSO₄(s)

When sodium carbonate (Na2CO3) is added, it dissociates and forms Na+ and CO₃⁻². According to the solubility table, the salt CuCO₃ is nonsoluble and will form a precipitate:

Na⁺(aq) + CO₃⁻²(aq) + Cu⁺²(aq) → Na⁺(aq) + CuCO₃(s)

CO₃⁻²(aq) + Cu⁺²(aq) → CuCO₃(s)

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