Answer:
Fire is a state of matter
Explanation:
Fire is the fourth state if matter called plasma fire is one of thr naturally occuring plasmas we have in existance on earth!
Arrange these complexes in order of octahedral splitting energy, ∆o.
Largest ∆o (1, 2, 3, 4) to Smallest ∆o
[Ru(CN)6]3-
[Co(H2O)6]3+
[Cr(CN)6]3-
[CrCl6]3-
The order of octahedral splitting energy, ∆o is \([Co(H_2O)_6]_3^+\) > \([CrCl_6]_3^-\) > \([Cr(CN)_6]_3^-\) > \([Ru(CN)_6]_3^-\).
The octahedral splitting energy (∆o) is defined as the energy difference between the two sets of d-orbitals (t2g and eg) in an octahedral crystal field. This is how the given complexes can be arranged in order of their octahedral splitting energies (from largest to smallest): \([Co(H_2O)_6]_3^+\) : It has the largest ∆o as it is a strong field ligand which causes a large splitting of the d-orbitals. \([CrCl_6]_3^-]\) : It has a lower ∆o than \([Co(H_2O)_6]_3^+\) as chloride ions are weak field ligands and they cause less splitting of the d-orbitals. \([Cr(CN)_6]_3^-\) : It has an even lower ∆o than \([CrCl_6]_3^-\) as cyanide ions are strong field ligands and they cause a greater splitting of the d-orbitals than chloride ions. \([Ru(CN)_6]_3^-\) has the smallest ∆o as it has weak field ligands and they cause the least splitting of the d-orbitals among the given complexes.
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both of janies parents have dark hair. how likely is janie to have blonde hair?
Answer:
The probability of Janie to have blonde hair would be a slim 13% to a 34%.
Explanation:
Not 100% sure but best estimation I can come up with.
b) Deduce the formula of potassium oxide and calcium oxide Potassium oxide .................................................................................... .................................................................................... .................................................................................... ....................................................................................
Answer:
Potassium Oxide is KO.
Calcium Oxide added to Potassium Oxide is Potassium dioxide.
potassium oxide: K₂O
calcium oxide: CaO
What is water's density at 91 ∘c? assume a constant coefficient of volume expansion.
Answer:
982.5 kg/m³
Explanation:
When the temperature of a fluid increases, it dilates, and because of the variation of the volume, it's density will vary too. The density can be calculated by the expression:
ρ₁ = ρ₀/(1 + β*(t₁ - t₀))
Where ρ₁ is the final density, ρ₀ the initial density, β is the constant coefficient of volume expansion, t₁ the final temperature, and t₀ the initial temperature.
At t₀ = 4°C, the water desity is ρ₀ = 1,000 kg/m³. The value of the constant for water is β = 0.0002 m³/m³ °C, so, for t₁ = 93°C
ρ₁ = 1,000/(1 + 0.0002*(93 - 4))
ρ₁ = 1,000/(1+ 0.0178)
ρ₁ = 982.5 kg/m³
a interstitial solid is where the atoms of the dissolved element replace atoms of the solution element
A solid solution is an interstitial solid where the atoms of the dissolved element replace atoms of the solution element.
In a solid solution, the atoms of one element are introduced into the crystal lattice of another element, resulting in a homogeneous mixture. This type of solid solution is known as an interstitial solid. It occurs when the size of the dissolved atoms is significantly smaller than the atoms of the host lattice, allowing them to occupy interstitial positions within the crystal structure.
The process of forming an interstitial solid involves the substitution of host atoms by smaller atoms of the dissolved element. This substitution occurs in the interstices or spaces between the larger host atoms. The smaller atoms fit into these interstitial sites, creating a solid solution. The dissolved atoms do not disrupt the overall crystal structure but instead fill the gaps between the host atoms.
This interstitial solid solution formation has important implications for material properties. It can lead to changes in the lattice parameters, such as lattice distortion or strain, which can affect the mechanical, thermal, and electrical properties of the material. Additionally, the presence of the dissolved atoms can influence the diffusion behavior and the alloy's overall chemical and physical properties.
In summary, an interstitial solid is a type of solid solution where the atoms of a dissolved element replace atoms of the solution element by occupying the interstitial sites in the crystal lattice. This formation has significant effects on the material's properties, making it an important phenomenon in the field of materials science.
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Use the drop-down menus to answer the questions.
As the amount of surface area increases, what happens to the rate of this reaction?
If the antacid tablet were broken into eight pieces, what would be a reasonable estimate for the time of reaction?
Answer:
the rate is faster, and the time of reaction is 28 seconds
Explanation:
i did the test
Answer:
The rate is faster, 28 seconds
Explanation:
How much energy is removed from 10.55 kg of water to lower the temperature from 22.5 C to 3.0 C
Answer:
Explanation:
To calculate the amount of energy removed from 10.55 kg of water to lower its temperature from 22.5 °C to 3.0 °C, we can use the formula:
Q = m * c * ΔT
where Q is the amount of energy in joules, m is the mass of water in kilograms, c is the specific heat capacity of water (4.184 J/g-K), and ΔT is the change in temperature in degrees Celsius.
First, we need to convert the mass of water from kilograms to grams:
m = 10.55 kg * 1000 g/kg = 10550 g
Next, we need to calculate the change in temperature:
ΔT = 3.0 °C - 22.5 °C = -19.5 °C
Note that we have a negative temperature change because the water is losing heat.
Now, we can plug in the values into the formula:
Q = m * c * ΔT = 10550 g * 4.184 J/g-K * (-19.5 °C) = -820,026 J
The negative sign indicates that energy is being removed from the water, which is consistent with the fact that the temperature is decreasing. Therefore, approximately 820,026 joules of energy are removed from 10.55 kg of water to lower the temperature from 22.5 °C to 3.0 °C.
What is the percent composition for each element in lithium permanganate? Include how you figured out the formula, and how you know the formula's correct or not.
Answer ASAP please thank you:)
Lithium permanganate has a percent composition of 3.99% Lithium, 31.61% Magnesium, and 46.22% for each element.
How can I find out what percentage of each element is present in lithium carbonate?If we know the molar mass of each element and the molecular formula of the molecule, we may compute the composition of the elements. Hence, 18.78% of lithium is present in lithium carbonate by mass. Recall that a compound's overall percentage composition of all the elements is always 100%.
How is the percentage determined?To calculate the percentage, we must first divide the amount by the total value and then multiply the result by 100.
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Which best describes a semiconductor?
a.)Semiconductors are more conductive than a nonmetal and less conductive than a metal.
b.)Semiconductors are more conductive than a nonmetal and less conductive than a metalloid.
c.)Semiconductors have a high electrical conductivity.
d.)Semiconductors have a no electrical conductivity.
Answer:
a.)Semiconductors are more conductive than a nonmetal and less conductive than a metal.
Explanation:
Answer: A is your answer
Explanation: yor welcome =]=]=]=]
Which set of work should be used to solve the following problem?
How many moles are in 65.5 grams of PF3 gas? (molar mass of PF3=87.97 g/mol)
Group of answer choices
A. 65.5 g PF3 x (87.97 g PF3/1 mole)
B. 65.5 g PF3 x (1 gram PF3/87.97 mole)
C. 65.5 g PF3 x (1 mole/87.97 g PF3)
Answer:
C. 65.5 g PF3 x (1 mole / 87.97 g PF3)
Explanation:
Dimensional analysis can be used to find the amount of moles in 65.5 grams of PF3 gas.
First we would need to determine relevant conversions.
We would need to find the molar mass of PF3 which is already given ( 87.97 g / mol )
So 1 mole of PF3 = 87.97g
From there we can create the dimensional analysis table which will look something like the attached image.
This table correspond with answer choice C.
Reasons it's not the other answer choices.
It wouldn't be A because the units must cancel out and they don't as grams is being multiplied by grams
It would be B because it doesn't use correct units.
There are not 87.97 moles in 1 gram of PF3. There are 87.97 grams in 1 mole of PF3
Ultrasound and Magnetic Resonance Imaging (MRI), are technologies used to create images of a patient's internal features. In many instances, either technology can be used when diagnosing patients. However, ultrasound is often preferred for diagnosing moving features, while MRI is often preferred for diagnosing features surrounded by air or dense bone. Based on these differences, which of the following best describes the waves used by these technologies?
A.
Ultrasound uses sonar technology with sound waves, while MRI uses electromagnetic waves.
B.
Ultrasound and MRI both use electromagnetic waves because electromagnetic waves require a medium through which to travel.
C.
Ultrasound and MRI both use sonar technology with sound waves because sound waves are not affected by a change in medium.
D.
Ultrasound uses electromagnetic waves, while MRI uses sonar technology with sound waves.
Ultrasound uses sonar technology with sound waves while MRI uses electromagnetic waves.
What are electromagnetic waves?
The electromagnetic radiation consists of electromagnetic waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.Ultrasound uses sonar technology with sound waves while MRI uses electromagnetic waves.There are seven type of electromagnetic waves depending on the energy and frequency of the waves. These waves are a solution of Maxwell's equation.
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The chemical formula for water is H20. What does the formula show
about each element in the compound?
Select one:
the mass of protons in each atom
the number of atoms of each element
the number of valence electrons
the charge of the compound
Answer:
I believe the answer is "The number of atoms of each element."
Explanation:
H2o means 1 Hydrogen atom and 2 Oxygen atoms (However you won't see a "1" next to it, or any formula with only one atom present for that matter).
The chemical formula of H2O shows the number of atoms of each element in the compound.
What is chemical formula?Chemical formula is a formula showing the proportion of the atoms of the elements that make up the compound.
Chemical formula is important as it reveals the type and number of each of atom of the constituent elements.
According to this question, the chemical formula of water is given as H2O. This formula shows that water is made up of hydrogen and oxygen in the proportion 2:1.
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what is the water write example
Answer:
Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful and essential of compounds. A tasteless and odourless liquid at room temperature, it has the important ability to dissolve many other substances.
Explanation:
Answer/Explanation:
Water is a colorless and tasteless liquid that makes up an organism or body of any sort.
The meaning of the (holy)water is the spirit that flows in each person that will keep their hearts satisfied. Jesus used this term when talking to a Samaritan at a well. Water is also the source of the living water that springs up into eternal life. When talking about this water, Jesus was referring to himself. For His water(blood) had not yet been poured out and it could not yet cleanse (those who believed in him would be gushing out with the living water).
Can anyone help me with this formula?
Answer:
[1] P4 + [3] O2=[2] P2O3
Explanation:
you can first solve for amount of O2 in the equation because reactant had O2 and product had O3, so the amount of O2 should be 3 and amount of O3 should be 2, which gets u to 6 moles of oxygen for both reactant and product. then you can balance the P4, and 1 mols of P4 = 2 moles of P2, which matches with the amount of mols for O3 as well. therefore you can get P4 + 3O2 = 2P2O3
Why would the addition of alkali to this system lead to less CO2 (aq) being present?
thank youu
Answer:
Why would the addition of alkali to this system lead to less CO2 (aq) being present? Because the alkali would neutralise the acid in the system. This would reduce the concentration of acid in the system.
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which of the following would lead to a shift to the right? n2(g) 2 o2(g) ⇌ 2 no2(g) i. adding n2 to the system ii. adding o2 to the system iii. adding no2 to the system
Adding nitrogen gas (\(N_2\)) or nitric oxide (\(NO_2\)) to the system would lead to a shift to the right in the given chemical equation while adding oxygen gas (\(O_2\)) would not cause a shift.
In the given chemical equation, the forward reaction represents the formation of nitrogen dioxide (\(NO_2\)) from nitrogen gas (\(N_2\)) and oxygen gas (\(O_2\)), while the reverse reaction represents the decomposition of \(NO_2\)into \(N_2\) and \(O_2\).
When \(N_2\) is added to the system, according to Le Chatelier's principle, the equilibrium will shift to counteract the increase in \(N_2\) concentration. This means that the equilibrium will shift to the right to consume the excess \(N_2\), leading to an increase in the concentration of \(NO_2\) and the forward reaction.
Similarly, when \(NO_2\) is added, the equilibrium will again shift to the right to counteract the increase in \(NO_2\) concentration. This will result in an increase in the concentration of \(NO_2\) and the forward reaction.
On the other hand, adding \(O_2\) to the system does not directly affect the concentrations of \(N_2\) or \(NO_2\), so there will be no shift in the equilibrium position. The concentration of \(O_2\) does not appear in the balanced equation, and therefore, it does not influence the equilibrium.
Overall, adding \(N_2\) or \(NO_2\) to the system will cause a shift to the right, favoring the formation of \(NO_2\), while adding \(O_2\) will not lead to any shift in the equilibrium.
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Calculate the average atomic mass of element Q, if the isotopic composition of element Q is as follows: Q-107 has an abundance of 78%, and Q-110 has an abundance of 22%. Type your answer rounded to two decimal places.
Answer:
5
Explanation:
The earth gravity field strength in the south pole is less than the north pole. Explain
Answer:
In contrast, at each pole, you are only 6357 km from the center of the earth. Since the strength of gravity weakens as you get farther away from a gravitational body, the points on the equator are farther and have weaker gravity than the poles. ... The earth's centrifugal force also varies with latitude.
Explanation:
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the first feldspars to form are rich in what mineral
The first feldspars to form are rich in the mineral calcium.
To recap, the initial feldspars that form are calcium-rich.
Any of a group of minerals called aluminosilicates that contain calcium, sodium, or potassium are called feldspar. More than half of the Earth's crust is made up of feldspars, and a sizable portion of the literature on mineralogy is devoted to them.
Calcium-rich Plagioclase is the first feldspar to form when cooling magma cools, but as crystallization proceeds, plagioclase gradually gains sodium content.
Feldspar's structure is built on aluminosilicate tetrahedra, each of which contains an aluminum or silicon ion and four oxygen ions around it.
Each oxygen ion generates a three-dimensional network that each tetrahedron adjacent shares. Here, we can see the crankshaft chains, which are lengthy chains of aluminosilicate tetrahedra.
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PLEASE HELP!!!
How many km/hr are there in 6.01 x 10^6 yd/wk?
Answer:
32.711
Explanation:
1 yard = 0.0009144 km
1 week = 168 hrs
6.01 x 10^6 / 168 = 35,773.81 yds/hr
= 32.711 km/hr
A tank of oxygen holds 20.0 L at a pressure of 15.0 atm. What is the pressure of this same gas a constant temperature if the oxygen is allowed to expand to 300.0 L?
Answer:
khate ko ban randi ko ban
What does 1:1 dilution mean in chemistry?
Answer:
It means an equal volume of both the solvent & the solute
Explanation:
Calculate the standard reaction enthalpy for the reaction below:
3Fe2O3(s) → 2Fe3O4(s) + ½O2(g)
The standard reaction enthalpy for the given reaction is +235.8 kJ/mol.
What is the standard reaction enthalpy of reaction?The standard reaction enthalpy (ΔH°) for the given reaction is determined as follows:
Equation of reaction: 3 Fe₂O₃ (s) → 2 Fe₃O₄ (s) + ½ O₂ (g)
The standard enthalpy of formation values for Fe₂O₃ (s), Fe₃O₄(s), and O₂(g) is used to calculate the standard reaction enthalpy.
ΔH° = [2 × ΔH°f(Fe₂O₃)] + [½ × ΔH°f(O₂)] - [3 × ΔH°f(Fe₃O₄)]
where;
ΔH°f(Fe₂O₃) = -824.2 kJ/mol
ΔH°f(Fe₃O₄) = -1118.4 kJ/mol
ΔH°f(O₂) = 0 kJ/mol
ΔH° = [2 × (-1118.4 kJ/mol)] + [½ × 0 kJ/mol] - [3 × (-824.2 kJ/mol)]
ΔH° = -2236.8 kJ/mol + 0 kJ/mol + 2472.6 kJ/mol
ΔH° = 235.8 kJ/mol
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given that a mineral has three planes of cleavage, one of which is inclined, and breaks into rhombs, is the mineral mica, pyroxene, amphibole, halite, or calcite?
Answer:
Calcite
Explanation:
Get a medium test tube and place about 2 ml of copper (II) sulfate solution into it. Now add a piece of zinc metal and notice what happens over time.
Write the balance chemical equation, blanced ionic equation, and balanced net ionic equation, show your steps.
Get a medium test tube and place about 2 mL of zinc sulfate solution into it. Now add a piece of copper metal and notice what happens over time.
Write the balanced chemical equaqtion, balanced ionic equation, balanced net ionic equation, show your steps.
Answer:
The reaction between copper sulfate and zinc is a classic example of a displacement reaction. When zinc metal is added to a solution of copper sulfate, a redox reaction takes place, resulting in the formation of zinc sulfate and metallic copper.
The balanced chemical equation for the reaction is:
Zn(s) + CuSO4(aq) -> ZnSO4(aq) + Cu(s)
In this equation, Zn represents zinc, CuSO4 represents copper sulfate, ZnSO4 represents zinc sulfate, and Cu represents copper.
During the reaction, zinc atoms displace copper ions from the copper sulfate solution because zinc is higher in the reactivity series than copper. As a result, zinc is oxidized to Zn²⁺ ions, and copper ions in the solution are reduced to form copper metal.
The blue color of the copper sulfate solution gradually fades as copper metal is formed, and a red-brown deposit of copper can be observed on the surface of the zinc metal. This is an indication that the reaction has occurred.
This reaction will only occur if zinc is more reactive than copper in the reactivity series. Zinc is higher in the reactivity series than copper, which allows it to displace copper from copper sulfate. Therefore, when zinc sulfate is added to copper, no reaction takes place.
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what element can be found in both plays and stories
The element that can be found in both plays and stories is "characters."
Characters are an essential element of both plays and stories. They are the individuals or entities that drive the narrative, interact with each other, and contribute to the development of the plot. In plays, characters are typically portrayed by actors who perform their roles on stage, while in stories, characters are described and depicted through written words.
Characters can be central or supporting figures in a play or story, and they play a vital role in engaging the audience or readers. They have distinct personalities, motivations, and relationships that influence the events and conflicts within the narrative. Through their actions, dialogue, and character development, they contribute to the overall themes and messages conveyed by the play or story.
Whether it is a theatrical production or a written narrative, the presence and portrayal of characters are fundamental to creating engaging and compelling plays and stories.
Thus, the element that can be found in both plays and stories is "characters."
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Which graph above shows an object’s acceleration?
a or b
Why did you choose that graph in question above (explain why)
Answer:
A i just did it. And yes i do go to k12
Explanation:
Which of the following ligands is the most likely to form a high spin octahedral complex with cobalt(II) ion?
A. CN-
B. H2O
C. NH3
D. F-
F- is the most likely ligand to form a high spin octahedral complex with cobalt(II) ion.
In coordination chemistry, a ligand is an ion or molecule that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one or more of the ligand's electron pairs, often through Lewis bases. F- is the most likely ligand to form a high spin octahedral complex with cobalt(II) ion. It is so because it is weak field ligand. Weak field ligands are ones that produce small splitting between the d orbitals and form high spin complexes.
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Luke's collection has 27 postcards in it than brian's collection. Put togteher, their collections have 135 postcards how many postcards does luke have how many postcards does brian have
Answer:
I. Luke has 81 postcards.
II. Brian has 54 postcards.
Explanation:
Let Luke's collection be L
Let Brian's collection be B
Translating the word problem into an algebraic equation, we have;
L = 27 + B
L + B = 135
Substituting equation 1 into equation 2, we have;
27 + B + B = 135
27 + 2B = 135
2B = 135 - 27
2B = 108
B = 108/2
B = 54
Therefore, Brian has 54 postcards.
To find the value of L;
L = 27 + B
L = 27 + 54
L = 81
Therefore, Luke has 81 postcards
how many grams of aluminum nitrate are required to make a 100 grams of saturated solution at 40C?
Answer:
29 grams
Explanation:
At 20°C, a saturated solution of sodium nitrate (NaNO3) contains 86 grams of solute in 100 m of water.
This means the solubility of NaNO3 at 20°C is 86 g/100 ml of water
The solubility of NaNO3 at 50 °C is 115 grams of NaNO3/100 ml of water.
Therefore; to get the amount of sodium nitrate must be added to saturate the solution at 50°C;
We subtract the solubility at 20°C from the solubility at 50 °C
That is; 115 g/100 ml of water - 86 g/100 ml of water
= 29 grams of NaNO3