What is the amount (in mole) of sodium trioxocarbonate (IV) in 5.3g of the compound? (Na2CO3 = 106)​

Based on the information, the solubility product of AgCl is 6.91 × 10^-10.

The common ion effect concerns the decrease in solubility of a salt when it comes into contact with another compound containing an identical ion within its make-up. This phenomenon is caused by the dependetics that arise from this shared element, which results in a decreasing amount of ions required for dissolving said salt. An illustrative instance is seen when observing the effects of calcium chloride (CaCl2) on calcium sulfate (CsSO4).

Named reactions constitute a subclass of chemical interchanges widely used within organic chemistry. These yield profound utilization due to their notorious titles attributed to notable scientists or related to other respective exploits; they are thus named following mannerisms peculiar to the substance itself.

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The heat of reaction for the reaction C(s) + 2 H2(g) -> CH4(g) at 298 K can be calculated by using the following equation: ΔH = (ΔHf products - ΔHf reactants).

Applying this equation to the given reaction, we get ΔH = (-890.3 + 393.5 + 285.8) kJ = -210.0 kJ.

This is the heat of reaction at 298 K for the reaction C(s) + 2 H2(g) -> CH4(g).

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The reaction between calcium nitrate (Ca(NO₃)₂) and sodium oxalate (Na₂C₂O₄) can be represented by the following chemical equation:

Ca(NO₃)₂ + Na₂C₂O₄ → CaC₂O₄ + 2NaNO₃

This is a double displacement reaction, where the calcium ion (Ca²⁺) from calcium nitrate and the oxalate ion (C₂O₄²⁻) from sodium oxalate switch places to form calcium oxalate (CaC₂O₄) and sodium nitrate (NaNO₃). The balanced chemical equation shows that one mole of calcium nitrate reacts with one mole of sodium oxalate to form one mole of calcium oxalate and two moles of sodium nitrate.

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The IUPAC name of the given substance is (Z)-3-methyl-2-pentene.

The (Z) indicates that the two methyl groups on the double bond are on the same side of the bond, which is cis-configuration. The longest carbon chain in the molecule is five carbons, so it is named as pentene. The double bond is located between the second and third carbon atoms, so it is named as 2-pentene. Since the methyl group is attached to the third carbon atom, it is named as 3-methyl-2-pentene.

The prefix "Z" is used to indicate the cis-configuration of the molecule, where the two substituents on the double bond are on the same side. This nomenclature is important in identifying and describing the structure of organic compounds, particularly in fields such as biochemistry and medicinal chemistry where the structure of molecules plays a crucial role in their function.

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The mass of iron (III) nitrate needed to prepare a 125 mL solution of 0.250 M is approximately 7.56 grams.

To calculate the mass of iron (III) nitrate needed to prepare a 125 mL solution of 0.250 M, we can use the formula:

mass (in grams) = volume (in liters) x concentration (in moles/liter) x molar mass (in grams/mole)

First, let's convert the volume from milliliters (mL) to liters (L):

125 mL = 0.125 L

Next, we can use the given concentration of 0.250 M to calculate the number of moles of Fe(NO3)3 needed:

moles = concentration x volume

moles = 0.250 mol/L x 0.125 L

moles = 0.03125 mol

Finally, we can use the molar mass of Fe(NO3)3 to convert from moles to grams:

mass = moles x molar mass

mass = 0.03125 mol x 241.86 g/mol

mass ≈ 7.56 g

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The structural formula which represents a nonpolar symmetrical molecule is CH₄ (methane). Option 2 is correct.

Methane is a tetrahedral molecule with four hydrogen atoms surrounding a central carbon atom. Each hydrogen atom is bonded to the carbon atom by a single covalent bond, and all four hydrogen atoms are arranged symmetrically around the carbon atom, resulting in a nonpolar molecule.

On the other hand, NH₄ (ammonium ion) and H₂O (water) are polar molecules. NH₄ has a positive charge on the nitrogen atom, and the hydrogen atoms are arranged tetrahedrally around it, making it a polar molecule. H₂O has a bent or V-shaped molecular geometry with two lone pairs of electrons on the oxygen atom, resulting in an uneven distribution of charge and making it a polar molecule as well.

Hence, 2. is the correct option.

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When an equilibrium system is put under stress, Le Chatelier's principle may constitute used to forecast changes in equilibrium concentrations.

A rule that states that if a system is in equilibrium and a constraint is given to it (such as a change within pressure, temperature, or reactant concentration), the equilibrium will shift and tend to compensate for the effect caused by the constraint. This is  Le Chatelier's principle.

When an equilibrium system is put under stress, Le Chatelier's principle may constitute used to forecast changes in equilibrium concentrations. However, the adjustments required to reach equilibrium might not be as evident if we have a combination of reactants and byproducts that are still not at equilibrium.

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Answer:

cm=0.385 J

cm = (0.15 kg x 4.18 J/gCx (35C - 30C)) / (70 pieces x 0.1 kg/piece x (120C - 35C))

The answer is:

cm = 0.385 J/gc

Therefore, the specific heat of the metal is 0.385

The why there are so many carbon-based compounds is that B. Carbon can form up to six bonds with other carbon atoms and atoms of other elements.

Carbon  can be described as the element that posses 4 electrons in its outermost shell,  and it has the asbility to gain or loss 4 electrons to so it can have  nobel gas configuration.

It should be noted that Catenation is one of the  unique ability of carbon  which help it to form bonds with other atoms of carbon  and due to this reason, it have the ability to record a long chains of different types of compounds.

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The partial pressure of a component gas in a mixture is the pressure that gas would exert if present alone in the vessel at the same temperature as that of the mixture. Here the partial pressure of CO is

The pressure exerted by a mixture of two or more non-reacting gases enclosed in a definite volume is equal to the sum of the partial pressures of the component gases. This is sated by Dalton.

Here partial pressure is:

partial pressure = Mole fraction × Total pressure

Mole fraction of CO = Number of moles of CO / Total moles

n(CO) = 0.220 / 1.21 = 0.181 moles

partial pressure = 2.95 × 0.181  = 0.533 atm

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Answer:

Hybridization is the process in which two complementary single-stranded DNA and/or RNA molecules bond together to form a double-stranded molecule.

Explanation: Hope it helps you:)))))

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The acidity or alkalinity of a solution depends on the hydronium ion and hydroxide ion concentration. The pH scale is introduced by the scientist Sorensen. The pH of the solution is -1.90.

The pH of a solution is defined as the negative logarithm to the base 10 of the value of the hydronium ion concentration in moles per litre. The pH of the solution is given as:

pH = -log [H₃O⁺]

Dissociation of HCl is:

HCl + H₂O → H₃O⁺ + Cl⁻

Kₐ = [H₃O⁺][Cl⁻] / [HCl]

1.3 × 10⁶ = x × x / 0.00501

x² = 0.00501 × 1.3 × 10⁶ = 6513

x = √6513 = 80.7 M

HClO₂ + H₂O → H₃O⁺ + ClO⁻

Kₐ = [H₃O⁺][ClO⁻] / [HClO₂]

1.1×10⁻² = x² / 0.0378

x² = 0.0378 × 1.1×10⁻² = 0. 00041

x = 0.020 M

Thus the total concentration now is :

x = [H₃O⁺] = 0.020 +  80.7 = 80.72 M

pH = -log [H₃O⁺]

-log[80.72 ] = -1.90

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Answer:

3 methyl hexene

Explanation:

Name the property shown.

9. 2 x= x 2

td

11. 7(z+ y) = 7z+ 7y

10. 231= 23

12. a + (2b + 3c) = (a + 2b) + 3c

Gas legislation

PV = nRT

where P is atmospheric pressure

Volume (measured in litres)

The number of moles is n.

R = gas constant (0.0821 L atm/(mol K))

Temperature (in Kelvin) equals T.

We need to rearrange the ideal gas law to solve for n:

n = PV / RT

To use this equation, we need to know the pressure, temperature, and volume of the carbon dioxide.

0.002355 moles of carbon dioxide are equal to 235.5 litres of the petrol. As a result, 0.002355 moles of carbon dioxide are equivalent to 0.053 litres.

This is because 1 mole of carbon dioxide is equal to 22.4 litres. This indicates that there are 0.002355 moles of carbon dioxide for every 0.053 litres of carbon dioxide.

Therefore, there are 0.002355 moles of carbon dioxide in 235.5 litres of carbon dioxide.

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1) Indium and aluminum belong to the same group.

2) Barium belongs to groups 2 and 6

The compounds' names are;

Tetrachloro phosphorus chloride

Calcium bromide

Hexasulfur nitrogen

The following molecules balance the charges:

K3P, CaS, Al2O3

Chlorine and fluorine are elements of group 17

Magnesium and salt are the components that make up period 3.

The data are used to create the balanced equations;

Sn + 2H2O = SnO2 + H2

3O2 + 4Al = 2Al2O3

2Au + 3H2S = Au2S3 + 3H2

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Answer:

The temperature of the iron block is 68.5°C.

Explanation:

The heat released during condensation of water is used to warm the iron block:

q = m_H2O * ΔH_vap = m_fe * c_fe * ΔT

where q is the heat released, m_H2O is the mass of water condensed, ΔH_vap is the enthalpy of vaporization for water, m_fe is the mass of iron, c_fe is the specific heat capacity of iron, and ΔT is the change in temperature of the iron block.

Rearranging the equation gives:

ΔT = (m_H2O * ΔH_vap) / (m_fe * c_fe)

Substituting the given values gives:

ΔT = (0.95 g * 44.0 kJ/mol) / (75.0 g * 0.449 J/(g°C))

ΔT = 46.5°C

Therefore, the final temperature of the iron block is:

T_f = T_i + ΔT = 22°C + 46.5°C = 68.5°C.

The final temperature of the iron block is 68.5°C.

Answer:

Polyatomic molecules that are linear in shape are known as linear polyatomic molecules. The atoms in these linear molecules are arranged in a straight line (at an angle of 180 degrees). At the central atom of linear geometry polyatomic molecules, the electron pair has sp hybridization.

Answer:

2.00 L of a gas is collected at 25.0°C and 745.0 mmHg

Explanation:

The concentration of the resulting solution, given that 50.0 grams of MgSO₄.7H₂O were added to 1.60 liters of water is 0.127 M

First, we shall obtain the mole of 50 grams of MgSO₄.7H₂O. This is given below:

Mole = mass / molar mass

Mole of MgSO₄.7H₂O = 50 / 246

Mole of MgSO₄.7H₂O = 0.203 mole

Finally, we shall determine the concentration of the solution. Details below:

Concentration = mole / volume

Concentration of solution = 0.203 / 1.60

Concentration of solution = 0.127 M

Thus, the concentration of the solution is 0.127 M

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The molar absorptivity of the solution is 1.093 L/(mol*cm).

The Beer-Lambert rule, which states that absorbance is equal to molar absorptivity (a constant that indicates how strongly a material absorbs light) times the substance's concentration times the length of the light's passage through the solution, describes this relationship.

We know that we can use the formula;

A = εcl

A = Absorbance

ε = absorptivity

c = concentration

l = path length

ε= A/cl

ε= 0.47/0.215 * 2

ε = 1.093 L/(mol*cm)

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Answer: When you add small quantities of an acid or alkali (base) to it, its pH does not change significantly. In other words, the buffer solution stops the acid and base from neutralizing each other.

Answer:

 the result is a decrease in the amount of conjugate base present and an increase in the amount of the weak acid.

Explanation:

The molar concentration of NH₃ is 0.17 M.

The equilibrium constant expression for the given reaction is:

We are given Kc = 1.7 × 10² and the molar concentrations of H₂ and N₂ in the equilibrium mixture as 0.21 M and 0.015 M, respectively. Let x be the molar concentration of NH₃ at equilibrium. Then, we can write:

x = 0.017 M or 0.17 M (since there are two NH₃ molecules produced for every three H₂ molecules consumed, we take the square root of the calculated value to get the molar concentration of NH₃)

Therefore, the molar concentration of NH₃ in the equilibrium mixture is 0.17 M.

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The concentration of the sugar in the soft drink in mass percent is 8.64%

First, we shall determine the mass of the solution. Details below:

Mass of solution = Mass of sugar + mass of water

Mass of solution = 33 + 349

Mass of solution = 382 grams

Finally, we shall determine the mass percent of the sugar in the solution. Details below:

Percentage = (mass of sugar / mass of solution) × 100

Percentage of sugar = (33 / 382) × 100

Percentage of sugar = 8.64%

Thus, we can conclude that the mass percent of the sugar is 8.64%

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They maximise the distance between valence electrons to reduce the repulsion between them, which is option an in the correct response. This is so because the idea behind electron-pair geometries is to reduce valence electron repulsion.

By increasing the distance between them, which decreases the repelling power of the interactions between electrons, this is accomplished.

Because they reduce electron repulsion and enable molecules to adopt their most stable form, electron-pair geometries are used to anticipate the structure of molecules.

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The concept combined gas law is used here to determine the new volume of the balloon. This law relate one thermodynamic variable to another holding everything else constant. The new volume is 4.12 L.

The combination of Boyles law, Charles's law and Avogadro's law gives the combined gas law. This law states that the product of pressure volume and temperature of a system remains constant.

The equation is:

P₁V₁ / T₁ = P₂V₂ / T₂

V₂ = P₁V₁T₂ / P₂T₁

0.7455 × 3.1 × 279.9 / 0.528 × 296.8 = 4.12 L

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It is necessary to account for all unused ammunition and return it to a safe storage place or to the concerned authorities for disposal.

Bullets, shells and explosives are examples of physical objects that serve as ammunition to project force at a target. These objects are intended to be fired from a weapon such as a gun, rifle, or artillery piece and may be made of a variety of materials such as metal, plastic, or composite materials.

Depending on the weapon and the purpose of the attack, such as whether it is intended for training, target shooting, hunting or fighting, the ammo used will vary. Governments around the world have strict regulations governing ammunition, to ensure its safe handling, movement and application.

Therefore, it is necessary to account for all unused ammunition and return it to a safe storage place or to the concerned authorities for disposal.

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The synthesis reactions are generally exothermic. They release energy in the form of heat and light. In such reactions new compounds are found to be formed. Among the given options, none are synthesis reaction. So the given options are incorrect.

A reaction in which multiple reactants combine together to form a single product is defined as the synthesis reaction. It is a chemical reaction in which two or more simple substances combine to form a more complex compound.

1. H₂ + Br₂ → 2HBr = Redox reaction

2. 2H₂O + 2Na → 2NaOH = Redox reaction

3. NaCl → Na+ + Cl = Dissociation

4. Mg + H₂SO4 → MgSO4 + H₂​ = Single replacement

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The balanced reactions are;

NH3 (aq) + HBr (aq) → NH4Br (aq)

PO4^3-(aq) + H3O^+(aq) ----> HPO4^2- (aq)+ H2O(l)

HS^-(aq) + OH^-(aq) ----> H2O(l) + S^2-(aq)

A conjugate acid/base pair consists of two species that are distinct from one another by one proton. The base is the species that can accept a proton, and the acid is the species that can donate a proton. When a base takes a proton, it changes into an acid, and when an acid gives a proton, it changes into a base.

In reaction (1) above, the conjugate acid of NH3 is NH4^+ while the conjugate base of HBr is Br^-.

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