Which of the following transition metal complexes is paramagnetic?
[Zn(NH3)4]2+
Ni(CO)4
[Fe(H2O)6]3+ (high spin)
[Os(NH3)6]2+ (low spin)
Answers
Of the transition metal complexes listed, [Fe(H2O)6]3+ (high spin) is paramagnetic. This is because it has unpaired electrons in its d orbitals, which results in a net magnetic moment and paramagnetic behavior.
The content is discussing four different transition metal complexes and asking which one of them is paramagnetic. Paramagnetic molecules or ions have unpaired electrons, which make them attracted to an external magnetic field.
The first complex is [Zn(NH3)4]2+. Zinc is not a transition metal, and it has no unpaired electrons, so this complex will be diamagnetic (not attracted to an external magnetic field) since there are no unpaired electrons.
The second complex is Ni(CO)4. Nickel has 28 electrons, and all electrons will be paired because of its d8 electron configuration. Therefore, Ni(CO)4 will also be diamagnetic.
The third complex is [Fe(H2O)6]3+ (high spin). Iron has 26 electrons, making it a transition metal with a d6 electron configuration for this complex. If electrons in the d orbital of the metal are paired, it will be diamagnetic. However, if there are unpaired electrons, it will be paramagnetic. In this case, [Fe(H2O)6]3+ is high spin, which means all six electrons in the d orbital are unpaired, making it paramagnetic.
The fourth complex is [Os(NH3)6]2+ (low spin). Osmium is also a transition metal, with a d6 electron configuration for this complex. As this complex is low spin, the electrons will pair up in the d orbital before adding another electron, leaving no unpaired electrons, making it diamagnetic.
Therefore, the complex that is paramagnetic is [Fe(H2O)6]3+ (high spin).
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Related Questions
The National Stock Number (NSN) test search is used to locate test reports and Special Packaging Instructions (SP) on which of the following?
Answers
The NSN test search is used to locate test reports that provide comprehensive information about the testing and evaluation of specific products or items.
The National Stock Number (NSN) test search is used to locate test reports on various products or items. Test reports provide detailed information about the testing and evaluation of a particular product's performance, quality, safety, or compliance with specific standards or requirements. These reports are often conducted by independent testing laboratories or organizations to assess the characteristics and capabilities of the product.
The NSN test search allows users to search for test reports based on the NSN, which is a unique identification number assigned to each item in the federal supply system. By inputting the NSN into the search, individuals or organizations can access relevant test reports associated with that specific item or product.
The test reports obtained through the NSN test search can be valuable for various purposes, such as quality assurance, product development, procurement decisions, or regulatory compliance. They provide important insights into the performance and reliability of the item being tested, allowing users to make informed decisions based on objective evaluation and testing data.
In summary, the NSN test search is used to locate test reports that provide comprehensive information about the testing and evaluation of specific products or items.
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Where on the periodic table are you most likely to find elements that do not react with other elements A) group 1 B) group 2 C) group 17 D) group 18
Answers
Answer:
d) group 18
Explanation:
Group 18 on the periodic table consists of noble gasses, which do not chemically interact with other elements.
Given: 12 - x = 20 - 5x
To Prove: x = 2
Answers
Answer:
12 - x = 20 - 5x
Add 5x on both sides,
12 - x + 5x = 20 - 5x
12 + 4x = 20
Subtract 12 on both sides,
12 - 12 + 4x = 20 - 12
4x = 8
Divide 4 on both sides,
4x / 4 = 8 / 4
x = 2
Hence proved.
When your car rusts, the major chemical reaction is that between the iron from the steel in the car body with the oxygen from the air to form iron(III) oxide. When the reaction is balanced, the coefficient of iron(III) oxide is
Answers
The coefficient of iron(III) oxide in the balanced equation is 2.
What is chemical reaction?Process where one or more substances (reactants) are converted to different substances (products) through the rearrangement of atoms. Chemical reactions involves breaking of chemical bonds in the reactants, and formation of new chemical bonds in the products.
The chemical reaction between iron and oxygen to form iron(III) oxide is represented by the following balanced chemical equation:
4Fe + 3O₂ → 2Fe₂O₃
This equation shows that four moles of iron react with three moles of oxygen to produce two moles of iron(III) oxide. Therefore, the coefficient of iron(III) oxide in the balanced equation is 2.
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What was Pangea and when did it form?
Answers
Answer:
Pangaea or Pangea ( /pænˈdʒiːə/) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 335 million years ago, and it began to break apart about 175 million years ago.
Explanation:
2. zinc (III) chlorate →
Answers
Answer:
27
Explanation:
The area of an object is calculated from experimental data to be 24.6623 cm2. The ± absolute error in the area was determined to be ± 0.6 cm2. The area should be reported, in cm 2 , as A. 25 B. 24.7 C. 24.66 D. 24.6623 E. 24.662
Answers
we should take out from point
helpppppppppppppp!!!!!!!!!!!!!how did chlorine atom attain saturation in potassium chloride and oxygen dichloride
Answers
Jason took 6 hours to travel 540 km. For the first 140 km, he took 2 hours.
What was his average speed during the first two hours? ___ km/h
How much distance did he cover in the last four hours of his journey? ___ km
What was his average speed for the rest of the journey? ___ km/h
Answers
Answer: Average speed for the first two hours was 70 km/hr
Covered 400 km in the last four hours
Average speed for the rest of the journey was 100 km/hr
Explanation: 140 km / 2 hours = 70 km/hr
540 km - 140 km = 400 km remaining for the last four hours
400 km / 4 hours = 100 km/hr for the last four hours
The boiling point of SeOF2 is less than the boiling point of SeOCl2.
a) Identify the type(s) of intermolecular force(s) that the two substances have in common.
b) Explain the difference in boiling points based on the types and relative strengths of intermolecular forces.
Answers
The intermolecular force that is common to both is the dipole forces
b) The lesser molecular mass of \(SeOF_{2}\) made it to have a lesser boiling point.
What is the intermolecular forces?We know that apart from the forces that holds the atoms together in a molecule, there is yet another force that holds the molecules together in a particular state of matter. Let us recall that matter is anything that has mass and occupy space.
If we look at the two compounds that we have, it is clear that the commonality between the two compounds is that the both of them are held together by the dipole forces because the molecules are composed of atoms that are polar.
On the other hand, there is a dispersion force that is found in every molecule. The magnitude of the dispersion forces depends on the molecular mas of the molecule. Given that \(SeOCl_{2}\) has a greater molecular mass than \(SeOF_{2}\), it would necessarily have grater boiling point than the later.
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HELP
What is the total pressure of a wet gas mixture at 60°C, containing water vapor, nitrogen, and helium. The partial pressures are
Pnitrogen - 53.0 kPa and Phelium = 25.5 kPa.
Answers
Answer:
98.4 kPa
Explanation:
Step 1: Given and required data
Partial pressure of water vapor at 60°C (pH₂O): 19.9 kPa (this info is tabulated)Partial pressure of nitrogen (pN₂): 53.0 kPaPartial pressure of helium (pHe): 25.5 kPaStep 2: Calculate the total pressure of the gaseous mixture
The total pressure of the gaseous mixture (P) os equal to the sum of the partial pressures of the gases that form it.
P = pH₂O + pN₂ + pHe
P = 19.9 kPa + 53.0 kPa + 25.5 kPa = 98.4 kPa
The total pressure of the wet gas mixture is 98.4 KPa
Dalton's law of partial pressureThis law states that at constant temperature, the total pressure of a mixture of gases is equal to the sum of the partial pressure exerted by each gas. Mathematically, it is expressed as
Total pressure = partial pressure of A + partial pressure of B
How to determine the total pressure Partial pressure of water vapor at 60°C (pH₂O) = 19.9 KPa Partial pressure of nitrogen (pN₂) = 53.0 KPa Partial pressure of helium (pHe) = 25.5 KPa Total pressure (P) =?P = pH₂O + pN₂ + pHe
P = 19.9 + 53 + 25.5
P = 98.4 KPa
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some metallic elements can be found in pure form in nature. other metallic elements are usually found in compounds, combined with other elements. of the metals you worked with in this simulation, which do you think are most likely to be found in pure form in nature? least likely? explain your choices
Answers
The metals you worked with in this simulation, the most likely to be found in pure form in nature is copper, silver, and gold. While iron and aluminum are the least likely to be found in pure form in nature. Keep reading to learn more.
Elements that can be found in nature as a pure substance are known as native elements. Only a few metallic elements can be found in nature as pure substances, whereas the majority are found as compounds that are combined with other elements. Copper, silver, and gold are examples of native elements. The existence of these metals in their native state can be attributed to their relatively low reactivity and ability to resist chemical and physical changes
Iron and aluminum, on the other hand, are highly reactive metals and are therefore rarely found in nature in their pure state. Instead, they are found in combination with other elements such as oxygen, sulfur, or fluorine. Iron exists in minerals like hematite and magnetite, whereas aluminum is found in minerals such as bauxite and feldspar. In conclusion, copper, silver, and gold are the metals that are most likely to be found in pure form in nature, whereas iron and aluminum are the least likely to be found in pure form in nature.
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A student carrying a glass cup trips and drops the glass, then it shatters.
What type of change is this?
A. Physical change
B. Chemical change
C. Mixture change
(Need explanation too)
Answers
Answer:
A
Explanation:
Answer:
A is the correct answer I believe
Q425 L container of ammonia gas exerts a pressure of 652 mm Hg at a temperature of 243 K.
Calculate the pressure of this same amount of gas in a 2.50 L container at a temperature of 221 K.
Answers
The pressure of this same amount of gas in a 2.50 L container at a temperature of 221 K is 1.008 × 10⁵ mmHg.
How to calculate pressure?The pressure of a gas can be calculated using the combined gas law equation as follows;
PaVa/Ta = PbVb/Tb
Where;
Pa, Va and Ta = initial pressure, volume and temperaturePb, Vb and Tb = final pressure, volume and temperatureAccording to this question, 425 L container of ammonia gas exerts a pressure of 652 mm Hg at a temperature of 243 K. The final pressure can be calculated as follows;
652 × 425/243 = 2.5 × Pb/221
1,140.33 × 221 = 2.5Pb
Pb = 1.008 × 10⁵ mmHg
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Calculate ΔH for 2 NO(g) + O2(g) → N2O4(g) using the following information: N2O4(g)2 NO(g) + O2(g)→→2 NO2(g)2 NO2(g)ΔHΔH==+57.9 kJ−113.1 kJ Calculate for using the following information: 2.7 kJ -55.2 kJ -85.5 kJ -171.0 kJ +55.2 kJ
Answers
The heat of reaction, or ΔH, is also known as the enthalpy of reaction. The enthalpy for heat for the equation is ΔH=9.2 KJ.
N2 + O2 + 2NO H=180.6 KJ/mol 2NO2 + N2O4 H=-57 KJ/mol
2NO + O22NO2 H= -114.4 (note the sign change to N2+2O2N2O4 H= 9.2 KJ).
We may obtain the O2 on the left side, or the (reactant side), by inverting the third equation, allowing us to obtain a total of 2O2 in the bottom-most final equation. Remove 2NO2 from the reactant side of equation 1 and the product side of equation 2 both. Additionally, you should delete 2NO from the third equation's reactant and product sides. This results in an identical situation above and below the line.
Since equation 3 must be reversed for the change in enthalpy to remain the same, you must enter -57, 180.6, and -114.4 to obtain 9.2 KJ.
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The complete question is
Use Hess's law and the following equations to calculate ΔH for the reaction N2(g) + 2O2(g) N2O4(g). (Show your work.) (8 points)
2NO2(g) N2O4(g) ΔH = –57.0 kJ/mol
N2(g) + O2(g) 2NO(g) ΔH = 180.6 kJ/mol
2NO2(g) 2NO(g) + O2(g) ΔH = 114.4 kJ/mol
What would the final product beaker look like for when nitric acid reacts with strontium hydroxide?
Answers
The final product beaker for the reaction between nitric acid and strontium hydroxide would contain strontium nitrate and water. [Precipitation] of strontium nitrate would occur, while water would remain in the solution. The beaker may also contain some excess nitric acid if it was not completely neutralized by strontium hydroxide.
When nitric acid (HNO3) reacts with strontium hydroxide (Sr(OH)2), a neutralization reaction occurs. The balanced chemical equation for this reaction is:
2HNO3 + Sr(OH)2 -> Sr(NO3)2 + 2H2O
In this reaction, the hydrogen ions (H+) from nitric acid react with the hydroxide ions (OH-) from strontium hydroxide to form water (H2O). The remaining components, strontium ions (Sr2+) and nitrate ions (NO3-), combine to form strontium nitrate (Sr(NO3)2), which is a soluble salt.
In the final product beaker, the strontium nitrate would be in the form of dissolved ions since it is soluble in water. Water would be present in the solution as the solvent. If there was any excess nitric acid that was not completely neutralized, it would also be present in the beaker.
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what materials transmits the most light waves?
Answers
Answer: what materials transmits the most light waves?
Explanation:
Some common substances and their chemical formulas are listed in the chart.
Which of these substances are elements?
Answers
Answer:
We heart you don't have all the information you just got some common substances and their chemical formulas are listed in the chart? That we don't have the chart to see which of the substances are elements
Explanation:
sorry about that if you can take a picture of it and repost it I am sure I could answer it for you
is carbon oxygen double bond more polar than carbon carbon double bond
Answers
Yes, the carbon-oxygen double bond is more polar than the carbon-carbon double bond. Here are some details and explanations on why it is so A polar bond is a chemical bond where a pair of electrons is unequally shared between two atoms.
The unequal sharing of electrons results in the formation of two poles, a negative pole and a positive pole. The difference in the electronegativity of the bonded atoms determines the polarity of the bond. The greater the difference in electronegativity between the two bonded atoms, the more polar the bond is.What is the electronegativity of an atom?The electronegativity of an atom is its ability to attract a pair of electrons towards itself. The higher the electronegativity of an atom, the greater its ability to attract electrons.What is a double bond?A double bond is a type of chemical bond where two pairs of electrons are shared between two atoms.
The difference in electronegativity value has an implication on the polarity of the bond. The greater the difference in electronegativity, the more polar the bond is. In the case of carbon-oxygen double bond, the difference in electronegativity is 1.0, which means that the bond is more polar than the carbon-carbon double bond, which has a difference in electronegativity of 0. In summary, the carbon-oxygen double bond is more polar than the carbon-carbon double bond.
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acetanilide is soluble in warm water, but trans-cinnamic acid is not. suggest an explanantion for this looking at ratios of polar SA and total SA
Answers
Acetanilide has a higher ratio of polar surface area (SA) to total SA compared to trans-cinnamic acid, which allows it to form stronger interactions with water molecules and be more soluble.
Acetanilide and trans-cinnamic acid have different solubility behaviors in warm water due to their molecular structures and the relative ratios of their polar surface area (SA) to total SA.
Acetanilide contains an amide functional group (-CONH2), which contributes to its polar nature. The amide group has a partial positive charge on the carbon and a partial negative charge on the oxygen and nitrogen atoms. This polar group increases the ratio of polar SA to total SA in acetanilide, allowing it to form stronger hydrogen bonds and interact more favorably with water molecules, making it soluble in warm water. On the other hand, trans-cinnamic acid contains a carboxylic acid functional group (-COOH), which is also polar but to a lesser extent compared to the amide group. The lower polar SA to total SA ratio in trans-cinnamic acid results in weaker interactions with water molecules, leading to lower solubility in warm water.
Thus, the differences in the ratios of polar SA to total SA between acetanilide and trans-cinnamic acid explain their contrasting solubility behaviors in warm water.
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do the change in enthalpy & change in entropy values favor a spontaneous reaction?
Answers
For a reaction to be spontaneous, the change in enthalpy (ΔH) should be negative (exothermic), and the change in entropy (ΔS) should be positive (increase in disorder). The Gibbs free energy (ΔG) can be used to determine the spontaneity, where a negative value of ΔG indicates a spontaneous reaction.
The change in enthalpy (ΔH) and change in entropy (ΔS) values provide important information about the spontaneity of a reaction. For a reaction to be spontaneous, it should have a negative ΔH (exothermic) and a positive ΔS (increase in disorder).
1. If ΔH is negative, it means that the reaction releases energy in the form of heat. This is favorable for a spontaneous reaction because it indicates that the products are more stable than the reactants.
2. If ΔS is positive, it implies an increase in the randomness or disorder of the system. This increase in entropy favors the spontaneity of a reaction since nature tends to move towards higher entropy states.
3. To determine whether a reaction is spontaneous, we can use Gibbs free energy (ΔG). The relationship between ΔH, ΔS, and ΔG is given by the equation: ΔG = ΔH - TΔS, where T represents temperature. If ΔG is negative, the reaction is spontaneous.
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WILL GIVE BRAINLIEST!! pls help
(04.05 MC)
Read the chemical equation shown.
3SO2 + 2HNO3 + 2H2O → 3H2SO4 + 2NO
Which statement is true about this chemical equation?
A) H (hydrogen) was oxidized and S (sulfur) was reduced.
B) H (hydrogen) was reduced and N (nitrogen) was oxidized.
C) S (sulfur) was oxidized and N (nitrogen) was reduced.
D) S (sulfur) was reduced and N (nitrogen) was oxidized.
Answers
Based on the chemical equation of the reaction, S (sulfur) was oxidized and N (nitrogen) was reduced.
The correct option is C.
What is a redox reaction?A redox reaction is a name for a reduction-oxidation reaction.
In a redox reaction, oxidation and reduction occur during the reaction.
Oxidation involves a loss of electrons and results in an increase in the oxidation number of the oxidized species.
Reduction involves a gain of electrons and results in a decrease in the oxidation number of the reduced species.
Considering the given equation of reaction:
3 SO₂ + 2 HNO₃ + 2 H₂O → 3 H₂SO₄ + 2 NO
The oxidation number of nitrogen changes from +5 in HNO₃to +2 in NO. Hence, it is reduced.
The oxidation number of sulfur changes from +4 tin SO₂ to +6 in H₂SO₄. Hence it is oxidized.
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#SPJ1What does a TRAAP test stand for
Answers
Answer:
TIMELINESS, RELEVANCE, AUTHORITY, ACCURACY and PURPOSE.
Explanation:
hope it helps!
Answer: TRAAP stands for Timeliness, Relevance, Authority, Accuracy and Purpose.
Explanation:
Help need fast !!!!!!
Answers
Answer:
Sodium oxide NA2O
2) N8CL
3) HO2
4) LISO3
Answer:
Sodium oxide NA2O
2) N8CL
3) HO2
4) LISO3
Explanation:
A particle that has 33 neutrons, 24 electrons, and 27 protons has an atomic number of
Answers
Answer:
It has an atomic number of 27. The number of protons in an atom determines its atomic number.
Explanation:
How many grams of oxygen gas would be needed to react completely with 9.76 moles of iron according to the equation below? Please round your answer to two digits after the decimal point and don't forget units and substance! Fe + O2 --> Fe2O3
Answers
Fe + O₂ → Fe₂O₃
19.52 moles of oxygen gas would be needed to react completely with 9.76 moles of iron according to the equation.
What is oxygen gas?Oxygen gas is a form of oxygen (O2) that exists as a gas at standard temperature and pressure. It is an important component of the Earth's atmosphere, making up 21% of the air we breathe.
Oxygen is produced by photosynthesis in plants and by the process of respiration in animals. In addition, oxygen is used in many industrial processes, such as welding and other forms of combustion. Oxygen is also used in medical applications, such as in oxygen therapy and in medical devices such as ventilators.
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The quantity of grams of oxygen gas that will be needed to react completely with 9.76 moles of iron according to the equation above would be = 624.64g
How to calculate the quantity of carbon?From the above equation;
1 mole of Fe reacted with 2 moles of oxygen
9.76 moles of Fe would react with X moles of oxygen.
That is;
1 mole Fe = 2 moles oxygen
9.76 mole Fe = X moles of oxygen
Make X the subject of formula;
x = 9.76× 2
X = 19.52 moles of oxygen.
But 1 mole of oxygen = 32 g
19.52 moles = X
Make X the subject of formula:
X = 32×19.52 = 624.64g.
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REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Answers
Answer:
c. sun, radiation
Explanation:
From the video " Are Wormholes The Answer To Time Travel?", how are worm holes described? Question 4 options: Satellites seen from space The name of the first attempted airplane A tunnel in space connecting two regions very distant from each other. A "short cut" through space The path left behind from a fast moving asteroid in space
Answers
Answer:
C
Explanation:
Classify each of the following examples as a physical change or a chemical change. Answer choices may be used more than once.
Answers
1. Physical change
Sugar dissolving in waterWater freezing into iceIn a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.
2. Chemical change
Burning a candleRust forming on a carA chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed. It results when a substance combines with another to form a new substance.
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What is the compound H2O called?
Answers
The compound H2O is commonly referred to as water.
Water is a naturally occurring chemical substance that is essential for life on earth. It is made up of two hydrogen atoms (H) and one oxygen atom (O) bonded together. The chemical formula for water is H2O. Water is tasteless, odorless, and colorless, but it is one of the most important substances in the world. It is the most abundant liquid on the earth's surface, covering about 71% of the earth's surface. It is also a major component of the human body, making up 60% of the body weight.
Water has many unique properties that make it essential for life. For example, it has a high heat capacity, which means it can absorb and retain a large amount of heat before its temperature changes. This property helps to regulate the temperature of the earth's surface. Water is also a solvent, meaning it dissolves many substances, which is why it is used in so many chemical reactions.
Water is also a very polar molecule, meaning it has a positive charge at one end and a negative charge at the other. This property gives water the ability to dissolve ionic compounds, such as salts, and to form hydrogen bonds with other polar molecules. These hydrogen bonds are extremely strong and play a crucial role in many biological processes, such as protein folding and DNA structure.
Overall, water is a critical component of natural the world and is essential for life on earth.
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