a student weighed out 3.87g of h2ptcl6 and added it to water. how many moles of the compound did the student add to water

A Keq value of 29 suggests that the products are strongly favored over the reactants at equilibrium, and the ratio of the concentration of products to the concentration of reactants is 29:1.

The equilibrium constant, Keq, for a chemical reaction is a measure of the relative concentrations of products and reactants at equilibrium. If the value of Keq for a reaction is greater than 1, it indicates that the products are favored at equilibrium, and if Keq is less than 1, it indicates that the reactants are favored. In the case of a Keq of 29, it suggests that the products are significantly favored over the reactants at equilibrium.

More specifically, the Keq value indicates the ratio of the concentration of products to the concentration of reactants at equilibrium. A Keq of 29 indicates that the concentration of products is 29 times greater than the concentration of reactants at equilibrium. This suggests that the reaction strongly favors the formation of products, and the equilibrium is shifted towards the products side.

It is important to note that the value of Keq is temperature-dependent and can change with changes in temperature. A decrease in temperature can cause the equilibrium to shift towards the reactants, while an increase in temperature can shift it towards the products. However, at any given temperature, a Keq value greater than 1 indicates that the reaction is proceeding towards the products side, and a Keq value less than 1 indicates that it is proceeding towards the reactants side.

In summary, a Keq value of 29 suggests that the products are strongly favored over the reactants at equilibrium, and the ratio of the concentration of products to the concentration of reactants is 29:1.

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Answer:

It delivers annually about 1.5 Mt of dissolved phosphorus and more than 20 Mt of suspended phosphorus into the ocean. Up to 80% of the suspended phosphorus incorporated in the lithogenic material precipitates within submarine continental margins.

Explanation:

Examples of compounds are: Water, Carbon dioxide, Sodium chloride, Glucose, and Methane.

Compounds are the substances that are made up of two or more different elements that are chemically bonded together.

Water (H₂O): Water is a compound made up of two hydrogen atoms and one oxygen atom that are covalently bonded together.

Carbon dioxide (CO₂): Carbon dioxide is a compound made up of one carbon atom and two oxygen atoms that are covalently bonded together.

Sodium chloride (NaCl): Sodium chloride, or table salt, is a compound made up of one sodium atom and one chlorine atom that are ionically bonded together.

Glucose (C₆H₁₂O₆): Glucose is a compound made up of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms that are covalently bonded together.

Methane (CH₄): Methane is a compound made up of one carbon atom and four hydrogen atoms that are covalently bonded together.

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--The given question is incomplete, the complete question is

"What are the examples of compounds."--

The concentration of CrO₄²⁻ required to initiate the precipitation of Ag₂CrO₄ is 9.243 x 10⁻⁹ M.

The solubility product (Ksp) is a constant that represents the equilibrium between a solid solute and its dissolved ions in a saturated solution at a given temperature. It is used to quantify the solubility of a sparingly soluble compound in a solvent.

The value of Ksp is constant at a given temperature and indicates the extent to which the solid compound can dissolve in the solvent. Higher values of Ksp indicate greater solubility, while lower values indicate lower solubility.

The solubility product is useful in determining the maximum concentration of ions that can be present in a solution before precipitation occurs, as well as predicting the formation of a precipitate in a chemical reaction.

Ksp = [Ag⁺]²[CrO₄²⁻]

Given:

[Ag⁺] = 3.62 x 10⁻³ M

Ksp = 1.20 x 10⁻¹²

1.20 x 10⁻¹² = (3.62 x 10⁻³)²  [CrO₄²⁻]

[CrO₄²⁻] = (1.20 x 10⁻¹²) / [(3.62 x 10⁻³)²]

= 9.243 x 10⁻⁹ M

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The statement that is true about the molarity of the solution is that 5.0 moles of a solute is dissolved in 1.0L of solution (option D).

Molarity is the concentration of a substance in solution, expressed as the number of moles of solute per litre of solution.

The molarity or concentration of a solution is a function of the number of moles of solute it contains and the volume of the solvent it is dissolved in.

This suggests that if a solution has a concentration of 5.0M, it has a solute of 5.0moles dissolved in 1.0L of solvent.

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When it comes to solubility in water, 2-butanone is more soluble than cyclohexanone. In this case, the reasoning for why this happens is based on the polarity of each molecule.

A polar molecule is a molecule that has a positive and negative end or pole due to the unequal distribution of electrons within the molecule. The positive pole of the molecule has a greater concentration of positively charged protons than the negative pole, which has a greater concentration of negatively charged electrons.

In this sense, polar molecules interact with polar solvents, whereas nonpolar molecules interact with nonpolar solvents, in order to be soluble.2-Butanone and Cyclohexanone are two organic compounds with distinct chemical compositions. Although both have the same functional group of ketones, they have distinct molecular structures. The following are the molecular structures for both:2-ButanoneCyclohexanone

The water molecule, on the other hand, is polar due to the uneven distribution of electrons among the two atoms. It has a negative end and a positive end. When a substance is soluble in water, it means it can dissolve in water due to its polarity. Water molecules have a higher affinity for other polar molecules since they are polar themselves. Because of its polarity, 2-butanone is more soluble in water than cyclohexanone.

The cyclohexanone molecule, on the other hand, is nonpolar, therefore it will be less soluble in water than 2-butanone.

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The total entropy change is 1.036 JK/K

Entropy means the unavailable energy associated with the system. The entropy generation for the reversible cycle is zero and for irreversible cycle, it is positive. We can also understand entropy to be randomness of a system, Randomness is maximum in gaseous state and least in solid state.

The given data; the amount of heat transferred by the thermal reservoir is Q = 100KJ. Temperature of the high thermal reservoir is \(T_{h}\) = 1150k.

The temperature of the low thermal reservoir is \(T_l\) = 600K.

\(d_{s}\) = -Q + Q

        \(T_{h}\)   \(T_{l}\)

Substituting the formula we get

\(d_{s}\) = - 100KJ   +  1OOKJ

        1150K         600K

= 1.036 KJ/K

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Answer:

true (in some labs you aren't allowed to have any drinks so i dont know if that applies to your lab or not )

Explanation:

Answer:

4Fe + 3O₂ → 2Fe₂O₃

General Formulas and Concepts:

Chemistry - Reactions

Explanation:

Step 1: Define

RxN:   Fe + O₂ → Fe₂O₃

Step 2: Balance

We need to balance both Fe and O.

LCM of 2 and 3 is 6:

Fe + 3O₂ → 2Fe₂O₃

We now need the same amount of Fe on both sides:

4Fe + 3O₂ → 2Fe₂O₃

The correct answer is (c) boiling point. The boiling point of a compound is related to its intermolecular forces and molecular weight, which affect the strength of its interaction with the stationary phase in the column.

In gas chromatography, the gas is separated based on the boiling point of the components in the mixture. The mixture is first vaporized and then injected into the column oven, which contains a stationary phase. As the gas moves through the column, the components in the mixture interact differently with the stationary phase and thus travel at different rates. This causes the components to separate and form distinct peaks in the chromatogram.

Therefore, the correct answer is (c) boiling point. The boiling point of a compound is related to its intermolecular forces and molecular weight, which affect the strength of its interaction with the stationary phase in the column. The higher the boiling point of a compound, the stronger its interaction with the stationary phase and the slower it moves through the column.

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Answer:

AgNO3 - Silver nitrate

CaCl2 - Calcium chloride

Al2S3, aluminum sulfide

Explanation:

THESE ARE NOT LINKS TO OTHER WEBSITES!!!! THESE ARE METALLIC COMPOUND FORMULAS!!!!

(My other answer was deleted because they thought i was posting websites but i was posting formulas for your question)

The repulsive force between the electron and the molecule containing 2 protons and 4 electrons, separated by 30 cm, is approximately 4.8 x 10²⁹Newtons.

To determine the repulsive force between two molecules, we can calculate the electrostatic force between them using Coulomb's law. Coulomb's law states that the electrostatic force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

Charge of an electron (e-) = -1.6 x 10¹⁹ Coulombs

Charge of a proton (p+) = +1.6 x 10¹⁹ Coulombs

Since one of the molecules is an electron, we can consider the net charge of the other molecule:

Net charge = (2 x charge of proton) + (4 x charge of electron)

= (2 x +1.6 x 10^¹⁹ C) + (4 x -1.6 x 10¹⁹ C)

= +3.2 x 10¹⁹ C - 6.4 x 10¹⁹ C

= -3.2 x 10¹⁹ C

Distance between the molecules (r) = 30 cm = 0.3 m

Now, we can calculate the repulsive force (F) using Coulomb's law:

F = (k x q1 x q2) / r²

Where:

k is the electrostatic constant, approximately equal to 9 x 10⁹ Nm²/C²

q1 and q2 are the charges of the two molecules

r is the distance between the molecules

F = (9 x 10⁹ Nm²/C²) x (-1.6 x 10¹⁹ C) x (-3.2 x 10¹⁹ C) / (0.3 m)²

Calculating the numerical value:

F = (9 x 10⁹ Nm²/C²) x (4.8 x 10³⁸C²) / 0.09 m²

= 4.8 x 10²⁹ N

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The pressure of gas A is 945 mm Hg, calculated from the atmospheric pressure, the elevation of the chemistry building, and the distance H between the mercury levels.

The atmospheric pressure is 770 mm Hg.

The elevation of the chemistry building is 600 ft above sea level, which means the atmospheric pressure is reduced by 0.02087 psi/ft * 600 ft = 12.49 mm Hg.

So, the corrected atmospheric pressure is 770 - 12.49 = 757.51 mm Hg.

The distance H is 175 mm, which means the pressure of gas A is 757.51 + 175 = 932.51 mm Hg.

However, the manometer is open to the atmosphere, so the pressure of gas A is equal to the atmospheric pressure plus the pressure of gas A.

Therefore, the pressure of gas A is 932.51 + 757.51 = 945 mm Hg.

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Answer:

other word for kindly is friendly

Answer: affectionately, thoughtfully, generous

Answer:

B. Internal pressure of the balloon decreased due to lower kinetic energy.

Explanation:

The balloon shrank when moved from the warm room to the cold refrigerator because the internal pressures of the balloon decreased due to lower kinetic energy.

Two mean unpaired is the type of hypothesis test you should use. If the caloric contents were normally distributed, and that a level of significance of 1% be used you should use two mean unpaired hypothesis test. Option B is correct.

13: Since you have two independent groups (1.5 moles per liter and 2.0 moles per liter), and you want to compare the means of these two groups, you would use a Two mean unpaired hypothesis test. This test compares the means of two independent groups to determine if there is a significant difference between them.

Therefore, Option B is correct.

15: Since you have two independent groups (Type A milk and Type B milk) you would also use a Two mean unpaired hypothesis test.

Therefore, Option B is correct.

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According to the question, the cell potential is 0.058V of the given galvanic cell.

In an electrochemical cell, the potential difference between two half-cells is measured by the cell potential or Ecell. Because electrons can move easily between one-half cell and the other, there is a potential difference. Because the chemical reaction is a redox reaction, electrons can travel freely between electrodes. Redox reactions happen when one chemical is reduced while another is oxidized. The substance undergoes oxidation, which results in the loss of one or more electrons, making it positively charged. In contrast, when a substance is reduced, it picks up electrons and becomes negatively charged.

According to the question,

By using the Nernst equation,

E(cell) = E(oxidation potential) + E(reduction potential)

E(Cell) = 0.037+0.021

           = 0.058 V

Hence, the cell potential is 0.058 V.

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766.7856 g

Molecular weight of Aluminium Nitrate is 212.996 g/mol. 3.6 moles of Aluminium Nitrate is: 212.996 × 3.6 = 766.7856

Answer:

This question doesnt make much sense but ill try to answer it.

A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electricity. If the shaft of a DC motor is turned by an external force, the motor will act as a generator. DC Motor rotation does have to do with the voltage polarity and the direction of the current flow.

Answer:

uhm

Explanation:

Answer:

A. carbon

Explanation:

Answer:

C. The amount of coffee is the same.

Explanation:

Verified

Answer:

B

IS THE CORRECT ANSWER

Calcium metal with chromium(III) chloride would react. Calcium metal is more reactive than chromium metal; therefore, putting calcium metal in chromium chloride would create a reaction, where as putting chromium metal in calcium chloride would not form any reaction.

Answer:

la re spuesta en verdadero

Answer:

True

Explanation:

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.