the sp of iron(ii) carbonate, feco3, is 3.13×10−11. calculate the molar solubility, , of this compound.

In terms of sodium concentration, compartment A would be referred to as hypertonic, while compartment B would be referred to as hypotonic.

The terms hypertonic and hypotonic describe the relative concentration of solutes in two different compartments.

In this case, compartment A has a higher concentration of sodium (10%) compared to compartment B (5%). A hypertonic solution has a higher concentration of solutes compared to another solution. Therefore, compartment A is hypertonic in relation to compartment B.

On the other hand, a hypotonic solution has a lower concentration of solutes compared to another solution. Hence, compartment B is referred to as hypotonic in relation to compartment A due to its lower sodium concentration.

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When a smoker inhales from a cigarette, the temperature at the tip can reach approximately 600-900 degrees Fahrenheit (315-480 degrees Celsius).

This high temperature is a result of the combustion process that occurs as the tobacco is burned. As the smoker draws in air, oxygen reacts with the burning tobacco, causing it to reach such extreme temperatures. The heat generated at the tip of the cigarette is a reflection of the intense chemical reactions taking place during smoking. It is important to note that these high temperatures contribute to the release of harmful substances, including carcinogens and toxic chemicals, which are then inhaled into the smoker's lungs.

The adverse health effects associated with smoking are well-documented, making it crucial for individuals to quit smoking or avoid tobacco use altogether to safeguard their well-being.

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Complete combustion of 5.80 g of a hydrocarbon produced 17.6 g of CO₂ and 8.99 g of H₂O. The empirical formula of the hydrocarbon is CH₂.

To determine the empirical formula of a hydrocarbon, we need to find out the number of moles of each element present in the compound. Then we need to divide the number of moles of each element by the smallest number of moles obtained among all elements. The resulting ratio gives the simplest whole-number ratio of atoms of the elements present in the compound.

We can find the moles of carbon and hydrogen from the given data as follows:

Moles of carbon in CO₂ = 17.6 g / 44.01 g/mol = 0.399 mol

Moles of hydrogen in H₂O = 8.99 g / 18.02 g/mol = 0.499 mol

Now we need to divide the number of moles by the smallest number of moles which in this case is 0.399.

Carbon atoms = 0.399 / 0.399 = 1

Hydrogen atoms = 0.499 / 0.399 = 1.25

Since we need a whole number ratio, we can multiply both numbers by 4 to get 4 carbon atoms and 5 hydrogen atoms. Therefore, the empirical formula of the hydrocarbon is CH₂.

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Answer:

D should be the correct one

Answer:

I cant really see the individual problems very well but i hope this helps

Explanation:

Decomposition = one thing -> 2 or more things

Synthesis= 2 or more things -> 1 thing

The water table is defined as: Option b) Upper surface of the groundwater

The water table is an underground line separating the soil's surface from the region where groundwater seeps into rock crevices and voids between sediments. At this limit, the water pressure and atmospheric pressure are equal.

The unsaturated zone is the portion of the soil surface above the water table where water and oxygen coexist in the gaps between the sediments. Because there is oxygen in the soil, the unsaturated zone is also known as the zone of aeration. The saturated zone, when water completely fills the crevices between the sediments, is located beneath the water table. Impenetrable rock surrounds the saturated zone at its base.

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Keep in mind that this is a simplified approach, and there may be exceptions or complications depending on the specific molecule and its geometry.

What is Hybridization?

In chemistry, hybridization is the process of combining atomic orbitals to form new hybrid orbitals with different properties than the original atomic orbitals. This concept is used to explain the geometry and bonding properties of molecules.

In hybridization, the valence electrons of an atom are rearranged to form hybrid orbitals that can participate in covalent bonding. The new hybrid orbitals are formed by mixing together atomic orbitals of similar energy, such as s, p, and d orbitals.

The hybridization of the central atom in a molecule can be predicted using the following steps:

Count the number of electron pairs around the central atom, including both bonding and lone pairs.

Use the electron pair geometry to determine the hybridization of the central atom, based on the following guidelines:

For two electron pairs, the hybridization is sp.

For three electron pairs, the hybridization is sp2.

For four electron pairs, the hybridization is sp3.

For five electron pairs, the hybridization is sp3d.

For six electron pairs, the hybridization is sp3d2.

Keep in mind that this is a simplified approach, and there may be exceptions or complications depending on the specific molecule and its geometry.

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Answer:

See explanation

Explanation:

Barium sulphate is easily prepared by means of a double replacement reaction. A double replacement reaction is one in which the ions in each of the reactants exchange partners in the products.

For instance, we can decide to prepare barium sulphate by a double replacement reaction between sodium sulphate and barium chloride. The both starting materials are soluble compounds. However, the barium sulphate formed is an insoluble white precipitate. The precipitate is recovered by filtration, washed and dried.

The reaction equation is shown below;

Na2SO4(aq) + BaCl2(aq)  -------> BaSO4(s) + 2NaCl(aq)

Answer:

14 grams of calcium oxide would be produced by thermal decomposition of 25 grams of calcium carbonate.

Explanation:

You know:

CaCO₃ → CaO + CO₂

In the first place, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) the following quantities react and are produced:

Being:

the molar mass of the compounds participating in the reaction is:

Then, by stoichiometry of the reaction, the following mass amounts of the compounds participating in the reaction react and are produced:

You can then apply the following rule of three: if by stoichiometry of the reaction 100 grams of calcium carbonate CaCO₃ produce 56 grams of calcium oxide CaO, 25 grams of CaCO₃ how much mass of CaO will it produce?

\(mass of calcium oxide=\frac{25 grams of CaCO_{3} *56 grams of CaO}{100 grams of CaCO_{3} }\)

mass of calcium oxide= 14 grams

14 grams of calcium oxide would be produced by thermal decomposition of 25 grams of calcium carbonate.

According to the balanced chemical equation, 2 moles of potassium permanganate produces 5 moles or oxidizes 5 moles of sulphite to sulphate ions. As a result, there are 0.639 moles of potassium.

In alkaline solution, KMnO4 reduces to green K₂MnO₄: 4 KMnO₄ + 4 KOH 4 K₂MnO₄ + O₂ + 2 H₂O. This reaction exemplifies hydroxide's uncommon role as a reducing agent. Mn₂O₇ is formed when concentrated sulfuric acid is added to potassium permanganate. One mole of KMnO₄ requires 5 moles of electrons in an acidic medium. Multiply equation (1) by 5 and equation (2) by 3 to balance the number of electrons. In an acidic medium, five moles of ferrous oxalate are oxidized by three moles of KMnO₄.

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.

yes your are right because water do have a stronger attraction

When asked to find the initial concentrations given the equilibrium, one can tell if the reaction is moving forward or in reverse by using the reaction quotient Qc.

If Qc > Kc, then the reaction will move in the reverse direction to reach equilibrium. If Qc < Kc, then the reaction will move in the forward direction to reach equilibrium. If Qc = Kc, then the reaction is already at equilibrium.

The initial concentrations can be determined by using the following formula:

Kc = [C]^c[D]^d/[A]^a[B]^b

where Kc is the equilibrium constant, [A], [B], [C], and [D] are the initial concentrations of the reactants and products, and a, b, c, and d are the coefficients of the balanced chemical equation.

If the equilibrium concentrations and Kc are known, the initial concentrations can be calculated as follows:

[A] = [A]eq /(1 + Kc/[B]eq^b + [C]eq^c + [D]eq^d)[B] = [B]eq /(1 + Kc/[A]eq^a + [C]eq^c + [D]eq^d)[C] = [C]eq /(1 + Kc/[A]eq^a + [B]eq^b + [D]eq^d)[D] = [D]eq /(1 + Kc/[A]eq^a + [B]eq^b + [C]eq^c)

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Answer:Super-giants

Explanation:

The equivalence point of a weak acid titration is identified by a dramatic increase in pH, resulting in a sharp vertical increase in the titration curve.

This is because at the equivalence point, all of the weak acid has been neutralized by the strong base, resulting in the formation of a salt and water.

The pH of the solution increases rapidly because the salt formed is usually neutral, and the concentration of H+ ions decreases.

Before the equivalence point, the titration curve shows a gradual horizontal increase in pH as the strong base is added to the weak acid. After the equivalence point, the titration curve shows a gradual horizontal decrease in pH as the excess strong base is added.

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The enthalpy of the reaction is 14 J/mol.

The enthalpy of a reaction (ΔH) is the amount of energy transferred between a system and its surroundings during a chemical reaction at constant pressure, measured in joules per mole (J/mol). This value is important because it can tell us whether a reaction is exothermic or endothermic, as well as give us information about the strength of chemical bonds within the reactants and products.To calculate the enthalpy of a reaction, we need to know the amount of energy released or absorbed (Q) and the number of moles of the compound involved in the reaction (n). We can use the equation:
ΔH = Q/n
Given that 6 moles of a compound produce 84 J of energy, we can calculate the enthalpy of the reaction as follows:
ΔH = Q/n
ΔH = 84 J / 6 mol
ΔH = 14 J/mol
This means that for every mole of the compound involved in the reaction, 14 J of energy is transferred between the system and the surroundings. Since the value is positive, we can conclude that the reaction is endothermic, meaning that it requires an input of energy to occur.It is worth noting that the enthalpy of a reaction can depend on a number of factors, such as temperature, pressure, and the specific conditions under which the reaction occurs. As such, it is important to take these factors into account when calculating or predicting enthalpy values.

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Answer:

A. its reactivity

Explanation:

It's reactivity because copper was exposed to air and if it is reactivity it must be exposed to air

Answer:

A.  reactivity

Explanation:

Answer:

false!

explanation:

Homogeneous are when they are similar! (example; female chromosomes XX) heterozygous are opposites!(example;male chromosomes XY)

Adenine is the purine base that forms three hydrogen bonds when binding its complementary nucleotide base.

Purines are a kind of nucleotide base.

They are natural aromatic organic compounds that have nitrogen atoms at positions 1 and 3 in their pyrimidine rings. Purines are nucleotides essential structural elements, which are used to create DNA and RNA.

Pyrimidine and purine are two types of nitrogenous bases found in nucleotides.

A nucleotide consists of a five-carbon sugar, a phosphate group, and a nitrogenous base.

Nitrogenous bases are a type of molecule that includes nitrogen atoms.

Pyrimidines, such as cytosine, thymine, and uracil, have a single ring of carbon and nitrogen atoms.

The purines, adenine and guanine, have a double ring of carbon and nitrogen atoms.

In DNA and RNA, nitrogenous bases are arranged in complementary pairs, and hydrogen bonds link the complementary bases.

Adenine (A) pairs with thymine (T) in DNA and uracil (U) in RNA.

On the other hand, guanine (G) pairs with cytosine (C) in both DNA and RNA.

Adenine forms hydrogen bonds with thymine, and guanine forms hydrogen bonds with cytosine.

The adenine-thymine combination has two hydrogen bonds, while the guanine-cytosine combination has three hydrogen bonds.

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Answer: The mass density is 1166.36 \(kg/m^{3}\).

Explanation:

Given: Weight of sample in air \((F_{air})\) = 500 N

Weight of sample in alcohol \((F_{alc})\) = 200 N

Specific gravity = 0.7 = \(0.7 \times 1000 = 700 kg/m^{3}\)

Formula used to calculate Buoyant force is as follows.

\(F_{B} = F_{air} - F_{alc}\\= 500 - 200 \\= 300 N\)

Hence, volume of the material is calculated as follows.

\(V = \frac{F_{B}}{\rho \times g}\)

where,

\(F_{B}\) = Buoyant force

\(\rho\) = specific gravity

g = acceleration due to gravity = 9.81

Substitute the values into above formula.

\(V = \frac{F_{B}}{\rho \times g}\\= \frac{300}{700 \times 9.81}\\= \frac{300}{6867}\\= 0.0437 m^{3}\)

Now, mass of the material is calculated as follows.

\(mass = \frac{F_{air}}{g}\\= \frac{500 N}{9.81}\\= 50.97 kg\)

Therefore, density of the material or mass density is as follows.

\(Density = \frac{mass}{volume}\\= \frac{50.97 kg}{0.0437 m^{3}}\\= 1166.36 kg/m^{3}\)

Thus, we can conclude that the mass density is 1166.36 \(kg/m^{3}\).

Answer:

Soapy detergents clean more effectively than normal soap. Hard water (water with high mineral content). Hard water can be used with soapy detergents but soap cannot be used with hard water. When soapy detergent and hard water are combined it makes a protective film that is really resistant to rinsing.

Have a good day.

Answer:

you will need the molar mass of Fe. [1 mol Fe=55.85 g Fe]

Explanation:

Starting with 6.5 g of iron, we can produce 0.058 moles of iron (III) oxide.

Balanced chemical equations have same number and type of each atom on both sides of the equation.

Balanced chemical equation for reaction between iron (Fe) and oxygen (O2) is: 4Fe + 3O2 → 2Fe2O3

Equation tells us that 4 moles of iron react with 3 moles of oxygen to produce 2 moles of iron (III) oxide (Fe2O3).

6.5 g Fe / 55.85 g/mol Fe = x moles Fe

x = 6.5 g Fe / 55.85 g/mol Fe = 0.116 moles Fe

0.116 moles Fe x (2 moles Fe2O3 / 4 moles Fe) = 0.058 moles Fe2O3

Therefore, starting with 6.5 g of iron, we can produce 0.058 moles of iron (III) oxide.

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The mass of the solution is 154.4 g and the specific heat of the solution is 7.21 kJ.

Part A:  Get the mass of water by multiplying the density(1.000) by the volume (150.0), which gives you 150.0g water. If you add 4.436g of NaOH, you will have 150.0 + 4.436 = 154.4gsolution.

Part B:  To do this, you multiply the mass of the solution bythe specific heat to get the heat capacity of the solution. You multiply this by the temperature change to get the heatproduced:

With significant figures, this is 7210J or 7.21kJ
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The pH value of the apple juice is 3.5 and The pH value of ammonia is: 8.5.

pH can be calculated using the following equation

pH = -log [H₃O⁺]

for apple juice the hydronium /hydrogen ion concentration is 0.0003

pH = -log (0.0003)

pH = 3.5

The pH value of the apple juice is 3.5

For ammonia

pH = -log (3.1 x 10⁻⁹)

pH = 8.5

The pH value of ammonia is: 8.5

NB: Not available in the option.

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Answer:

first identify the cation and write down its symbol and charge. Then, identify the anion and write down its symbol and charge.

Explanation:

P, R, and T are constant, then the volume is directly proportional to the mole. Then the correct option is A.

An ideal gas is a theoretical composed of a set of randomly moving gas particles that interacts only through elastic collision.

Given

A balloon containing 0.040 mol of a gas with a volume of 5.0 mL was expanded to 1.0 L.

\(V_1=5\ ml\)

\(V_2=1000\ ml\)

\(n_1=0.040\ mole\)

We know the equation of the ideal gas.

\(PV=nRT\)

where P, R, and T are the constant, then

\(\dfrac{V_2}{V_1}=\dfrac{n_2}{n_1}\)

\(V_2=n_2\times \dfrac{V_1}{n_1}\)

Thus, the correct option is A.

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Answer:

answer in picture

Explanation: