what is the oxidation state of the central metal in [cr(co)6]?

Answer:

Explanation:

Gravitational force

Answer:

1 gravity

2 magnetism

3 static electricity

Explanation:

The quantity of heat energy needed to raise the temperature of  \(1\)gram of a substance by  \(1\) degree Celsius is known as the substance's specific heat capacity. This material has a specific heat capacity of about \(0.180 J/(g^\circ C).\)

To determine the substance's specific heat capacity,

\(q = m \times c \times \delta T\)

where m denotes the substance's mass, c denotes its specific heat capacity, and T is the temperature change. Here, q denotes the amount of heat that is communicated.

The mass of the substance \((m = 2.2 g),\) the temperature change \((T = 80.0°C - 50.0°C = 30.0°C),\) and the heat energy communicated (q = 11.8 J) are all given in this problem.

When the formula contains these values,

\(11.8 J = 2.2 g \times c \times 30.0^\Circ\)

Solving for c, we get:

\(c = 11.8 J / (2.2 g \times 30.0°C)\)

\(c ≈ 0.180 J/(g°C)\)

Therefore, This material has a specific heat capacity of about \(0.180 J/(g^\circ C).\)

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The concentration of Ag+ ions in silver phosphate must be less than the concentration of Ag+ ions in silver oxalate.Therefore, we can conclude that silver oxalate has a greater concentration of Ag+ ions than silver phosphate.

Molar solubility is the maximum amount of a solute that can dissolve in a solvent to form a saturated solutions at a specific temperature and pressure.

To compare concentration of Ag+ ions in silver oxalate and silver phosphate,we calculate the molar solubility of each compound.

For silver oxalate, the solubility product constant (Ksp) is given as 5.40x10⁻¹².

The balanced equation for the dissociation of silver oxalate is:

Ag₂C₂O₄s) ⇌ 2 Ag+(aq) + C₂O₄₂-(aq)

The Ksp expression for silver oxalate is:

Ksp = [Ag+]² [C₂O₄₂₋]

Since the stoichiometric coefficient of Ag+ is 2, we can assume that the molar solubility of silver oxalate is equal to x mol/L. Then, the molar concentration of Ag+ ions is also x mol/L.

Using the Ksp expression for silver oxalate, we can solve for x:

Ksp = [Ag+]² [C₂O₄₂-]

5.40x10⁻¹² = (x)² (2x)

5.40x10⁻¹² = 2x³

x = (5.40x10⁻¹²/₂)¹/₃

x = 4.38x10⁻⁴ mol/L

Therefore, the molar solubility of silver oxalate is 4.38x10⁻⁴ mol/L, and the concentration of Ag+ ions is also 4.38x10⁻⁴ mol/L.

For silver phosphate, the Ksp is given as 8.89x10⁻¹⁷

The balanced equation for the dissociation of silver phosphate is:

Ag₃PO₄(s) ⇌ 3 Ag+(aq) + PO₄₃-(aq)

The Ksp expression for silver phosphate is:

Ksp = [Ag+]³ [PO₄₃-]

Using the Ksp expression for silver phosphate, we can solve for x:

Ksp = [Ag+]³[PO₄₃-]

8.89x10⁻¹⁷ = (3x)³[PO₄₃-]

8.89x10⁻¹⁷ = 27x³ [PO⁴³-]

[PO⁴³-] = 8.89x10⁻¹⁷/27x³

Since we don't know the value of x yet, we can't directly solve for [PO₄₃-]. However, we know that the molar solubility of silver phosphate must be less than the molar solubility of silver oxalate, since the Ksp value for silver phosphate is smaller.

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Answer:

Matter has mass and takes up space.

Explanation:

Matter is everything around you. Atoms and compounds are all made of very small parts of matter.

Mass is a measure of the amount of matter in an object.

Answer:

Beginning or Start

Explanation:

Reactions can be followed by measuring changes in concentration, mass and volume of reactants or products. The rate is highest at the start of the reaction because the concentration of reactants is highest at this point.

Hope this helped! :^)

When a solute is added to water, it affects colligative properties such as vapor pressure, boiling point, freezing point, and osmotic pressure. These changes depend on the number of solute particles present and have implications in various scientific and industrial applications.

The key colligative properties affected by the addition of a solute to water are:

1. Vapor pressure lowering: The presence of a solute decreases the vapor pressure of the solvent (water) compared to its pure form. This is known as vapor pressure lowering or Raoult's law. The solute particles occupy space at the surface of the solvent, reducing the number of solvent molecules that can evaporate, leading to a lower vapor pressure.

2. Boiling point elevation: Adding a solute to water raises its boiling point. The presence of solute particles disrupts the vaporization process, making it more difficult for the solvent molecules to escape into the gas phase. As a result, a higher temperature is required to reach the boiling point.

3. Freezing point depression: The addition of a solute to water lowers its freezing point. The solute particles interfere with the formation of the regular crystal lattice structure of water during freezing. As a result, a lower temperature is required to freeze the solution compared to pure water.

4. Osmotic pressure: When a semipermeable membrane separates two solutions with different solute concentrations, water molecules tend to move from the lower solute concentration (dilute) side to the higher solute concentration (concentrated) side in a process called osmosis. This movement of water creates pressure, known as osmotic pressure. The magnitude of osmotic pressure depends on the concentration of solute particles.

In summary, the addition of a solute to water affects the vapor pressure, boiling point, freezing point, and osmotic pressure of the resulting solution. These changes in colligative properties are important in various fields such as chemistry, biology, and industry, as they influence the behavior of solutions and biological systems.

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Answer:

First 1-5 in pics

I can't upload further reactions

Explanation:

6. Lucas test

ROH + Zncl2 +HCl ---> RCl + H2O

7. esterification

R-OH +R’-COOH +H+↔ R’-COOR

The lag of the maximum is exhibited when the maximum temperature for the day occurs several hours after maximum solar radiation receipt. option d

This delay in maximum temperature is referred to as "the lag of the maximum."Solar radiation is a major component of Earth's climate system, providing the energy that drives atmospheric circulation and the water cycle. The Earth's rotation and axial tilt also influence the timing of solar radiation receipt, with variations in these factors resulting in seasonal and diurnal changes in the amount and angle of solar radiation.

The temperature response to solar radiation receipt is complex, with a variety of feedback mechanisms and time lags influencing the relationship between the two.

The lag of the maximum is one of the most significant time lags in this relationship, and it is caused by the fact that the Earth's surface takes time to heat up in response to solar radiation.

As a result, the maximum temperature for the day does not occur until several hours after the maximum receipt of solar radiation. This delay can be influenced by a variety of factors, including cloud cover, humidity, and soil moisture levels, which can alter the amount of incoming solar radiation that is absorbed by the Earth's surface.

In summary, the lag of the maximum occurs when the maximum temperature for the day occurs several hours after the maximum receipt of solar radiation.

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CFCs can be classified as halocarbons, synthetic organic compounds containing carbon, chlorine, and fluorine. They are potent greenhouse gases with a high global warming potential and contribute to ozone depletion in the stratosphere.

Chlorofluorocarbons (CFCs) can be classified as synthetic organic compounds that contain carbon, chlorine, and fluorine atoms. They are members of the larger group of halocarbons, which are chemical compounds containing halogens (chlorine, fluorine, bromine, iodine) bonded to carbon.

CFCs were widely used in various industrial applications, including aerosol propellants, refrigerants, foam-blowing agents, and solvents. However, their production and use have significantly declined due to their harmful environmental impacts.

In terms of climate change, CFCs are potent greenhouse gases that have a much higher global warming potential (GWP) than carbon dioxide (CO2). The GWP is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time period compared to CO2. CFCs can trap a substantially greater amount of heat per unit mass compared to CO2, making them particularly effective at contributing to global warming.

It's important to note that CFCs not only have a high GWP but also deplete the ozone layer in the stratosphere. Their release into the atmosphere has been linked to the destruction of ozone molecules, leading to the formation of the ozone hole.

Due to their detrimental effects on both climate change and ozone depletion, international agreements such as the Montreal Protocol have been established to regulate and phase out the production and use of CFCs and other ozone-depleting substances.

In summary, CFCs can be classified as halocarbons, synthetic organic compounds containing carbon, chlorine, and fluorine. They are potent greenhouse gases with a high global warming potential and contribute to ozone depletion in the stratosphere.

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The solution with the highest concentration of potassium ion would be option C) 0.15 M K3PO4.

This is because K3PO4 contains three moles of potassium ions per mole of compound, while KCl and K2CrO4 contain only one mole of potassium ion per mole of compound. Therefore, the concentration of potassium ion is highest in K3PO4.

Potassium particle (K+) is maybe the most often enhanced electrolyte. 37. Potassium assumes a significant part in cell layer physiology, particularly in keeping up with resting film potential and in producing activity possibilities in the sensory system and heart.

Potassium can be obtained both naturally and through supplementation. Its primary job in the body is to assist with keeping up with typical degrees of liquid inside our cells. Its opposite, sodium, keeps the fluid levels outside of cells normal. Potassium additionally assists muscles with contracting and supports typical b.

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Answer:

Well, it could be B or D but I would say B.

Explanation:

The structure of an organelle is usually fit to its function so it is most likely B.

Hope this helps!

Two-dimensional paper chromatography is a technique used for the separation and identification of amino acids.

Two-dimensional paper chromatography is a powerful analytical method that allows for the separation and identification of amino acids based on their different chemical properties. It involves two successive separations using different solvent systems.

In the first dimension, a strip of filter paper is saturated with a solvent and the mixture of amino acids is applied as a spot near one end of the strip. The strip is then placed in a solvent chamber, and the solvent moves up the paper through capillary action, carrying the amino acids along. Different amino acids, due to their varying solubilities and interactions with the stationary phase, will migrate at different rates and separate from each other on the paper.

After the first dimension separation, the strip is removed, dried, and then rotated 90 degrees. In the second dimension, the strip is placed in a second solvent chamber with a different solvent system. The solvent moves horizontally across the strip, perpendicular to the first dimension. This separation allows for further resolution of the amino acids and helps to distinguish closely related compounds.

Once the two-dimensional separation is complete, the separated amino acids can be visualized using various detection methods such as ninhydrin or other specific staining reagents. The Rf (retention factor) values can be calculated for each amino acid spot, providing quantitative information about their migration distances.

Two-dimensional paper chromatography is a valuable technique for the separation and identification of amino acids. It allows for the visualization and quantification of different amino acids present in a mixture based on their unique migration properties. This method is widely used in biochemistry, molecular biology, and biochemical research to analyze complex mixtures of amino acids and can provide valuable information about protein composition and structure.

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Answer: left

Explanation: The element that appears farthest to the

✔ left

is written first in the chemical name of a covalent compound.

Answer:

a pH above 7 is alkali

a pH lower than 7 is acidic

Answer:

3 Br₂(l) +  I₂ (s) --> 2 IBr₃ (g)

Explanation:

After multiplying the coefficients and the subscripts, this would leave you with:

Reactants: 6 Br and 2 I

Products: 6 Br and 2 I

These are the lowest possible coefficients because you cannot further divide the coefficients and still get a whole number.

Answer: gas

Explanation:

\(▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)

As we know, Number of protons = Atomic Number

So,

And, Atomic mass = Number of protons + Number of Neutrons (N)

therefore ~

Number of Neutrons = 19

The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

Molar concentration of Sodium chloride (NaCl) means the number of moles of sodium chloride present in 1L of water.

Molar mass of NaCl = Molar mass of Na + Molar mass of Cl

Molar mass of NaCl = 23 + 35.5

Molar mass of NaCl = 58.5g

∴ 1L of water contains 55.55 moles of water. Hence,

Mass of ocean water = 55.55 × 18 = 999.9g

Since, 1L of ocean water has a mass of 999.9g of which 3.5% is the salt.

hence, (999.9) (0.035) = 34.99g

So, No. of moles of NaCl = Mass of NaCl / 58g NaCl per mol

No. of moles of NaCl = 34.99/58.5

No. of moles of NaCl = 0.59 moles

So, Molar concentration or Molarity would be 0.59 moles present in 1L of solution.

Hence, Molarity or Molar Concentration = Moles of NaCl/ Volume of solution (in L)

Molarity = 0.59/1L

⇒ Molarity = 0.59M

Hence, the molarity is 0.59M

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Answer:

C) 0.121 M

Explanation:

HCl + H₂O = H₃O⁺ + OH⁻

.121M              .121M

HCl is a strong acid . It will dissociate almost 100 % so the concentration of acid and hydronium ion formed will be equal . It is to be noted that hydronium ion is formed due to association of H⁺ and H₂O . H⁺ is formed due to ionisation of HCl .

So concentrtion of hydronium ion ( H₃O⁺ ) will be .121 M.

Answer:

I'm not to sure I'll ask one of my frens to help

Answer:

I not sure if this is right but maybe b since its particles is more spread out?

4-methylpentane

The response of 4-methyl-2-pentyne with extra hydrogen in the presence of a platinum catalyst is a hydrogenation reaction, which entails the addition of hydrogen atoms across the triple bond of the alkyne. The expected foremost organic product is 4-methylpentane, which is formed through the complete discount of the triple bond to a single bond.

The hydrogenation of 4-methyl-2-pentyne proceeds through a stepwise addition of hydrogen atoms to the triple bond, forming an intermediate alkene and then a saturated alkane. However, the presence of extra hydrogen ensures that the alkene intermediate is quickly decreased to the alkane product, which is the extra thermodynamically secure form.

Therefore, the anticipated main organic product of the hydrogenation reaction of 4-methyl-2-pentyne with extra hydrogen in the presence of a platinum catalyst is 4-methylpentane

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This case can be done by using the principle of stoichiometry. A) mass of oxygen must have leaked into the bottle is 14.6464 gram. B) yield for the conversion of ethanol to acetic acid if O2 is in excess is 30.36%

The stoichiometry of the reaction :
\(C_{2}H_{5}OH + O_{2}\) ⇒ \(CH_{3}COOH + H_{2}O\)

Ethanol + Oxygen = Acetic Acid + Water

Analysis of 1mL wine = 0.0274 gram of acetic acid
in 1 L of wine = 0.0274 x 1000 = 27.4 gram of acetic acid

1 L of wine contain 8.5% (by volume) ethanol = 1000 x 8.5 = 85mL ethanol

weight of ethanol = 85 x 0.816 = 69.36 gram

Molecular weight of:

ethanol = 46 gram/mole

oxygen = 32 gram/mole

acetic acid = 60 gram/mole

initial mole of ethanol = 69.36/46 = 1.5078 mole

acetic acid mole = 0.4577 mole

A) Oxygen leaked into the bottle

In this case we calculate oxygen reacted with ethanol

based on the stoichiometry every mole of acetic acid required 1 mole oxygen. Based on this mole of acetic acid = mole of oxygen reacted

0.4577 = mole of oxygen reacted

mass of oxygen leaked = 0.4577 x 32 = 14.6464 gram

B) yield for the conversion of ethanol to acetic acid if O2 is in excess is:

(mole of acetic acid)/(mole of initial ethanol) x 100% = yield

0.4577/1.5078 x 100% = 30.36%

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Answer:

did you have options, cause if you did chose something alond the lines of

Explanation:

A real gas is a gas that does not behave as an ideal gas due to interactions between gas molecules. A real gas is also known as a nonideal gas because the behavior of a real gas in only approximated by the ideal gas law.

Answer:

Bin 1 points to a carbon bonded to a double bonded carbon and single bonded to two hydrogens. --- trigonal planar, tetrahedral

Bin 2 points to a carbon double bonded to a carbon and single bonded to a carbon and one hydrogen.------- trigonal planar, tetrahedral

Bin 3 is a carbon single bonded to two carbons and single bonded to two hydrogens. ----- tetrahedral, tetrahedral

Bin 4 is the same as bin 3.--------tetrahedral, tetrahedral

Bin 5 is a carbon triple bonded to a carbon and single bonded to a carbon.---- linear, tetrahedral

Bin 6 is triple bonded to a carbon and single bonded to a hydrogen.---linear, tetrahedral

Explanation:

A single C-C or C-H bond is in a tetrahedral geometry, the carbon atom is bonded to four species with a bond angle of 109°.

A C=C bond is trigonal planar with a bond angle of 120°.

Lastly, a C≡C bond has a linear geometry with a bond angle of 180° between the atoms of the bond.

Answer:

Evaporation

Explanation:

Evaporation is the process of a liquid turning into its gaseous form. When a liquid hits its boiling point, it will evaporate and turn into gas. It can release vapor as well.

The object with the greatest gravitational pull is the Earth (option D).

Gravitational force is a very long-range, but relatively weak fundamental force of attraction that acts between all particles that have mass. It is believed to be mediated by gravitons.

Newton’s Law of Universal Gravitation states that every particle attracts every other particle in the universe with force directly proportional to the product of the masses and inversely proportional to the square of the distance between them.

The force of gravitational attraction is directly dependent upon the masses of both objects and inversely proportional to the square of the distance that separates their centers.

So as the mass of either object increases, the force of gravitational attraction between them also increases. If the mass of one of the objects is doubled, then the force of gravity between them is doubled. If the mass of one of the objects is tripled, then the force of gravity between them is tripled.

According to this question, Earth has the highest mass among the listed objects, hence, in accordance to the law of universal gravitation, Earth will possess the greatest gravitational pull.

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Answer:

thanks

Explanation: