Answer:
ch20 is the empirical formula for glucose , c6h1206 is the molecular formula .
12. MnO4 + A. B. From the equation below, which is oxidizing agent Mn²+ C. D. SO₂ - MnO4 SO₂ Mn²+ 2 SO4² + SO
MnO4- acts as an oxidizing agent, whereas SO2 acts as a reducing agent.
What is oxidising agent?An oxidizing agent is a chemical species that causes oxidation in another substance by receiving electrons from it. To put it another way, it is a chemical that makes it easier for electrons to move from the object being oxidized to itself.
When an oxidation occurs, electrons are lost or the oxidation state is increased; when a reduction occurs, electrons are gained or the oxidation state is decreased.
In this equation, MnO4- + SO2 + H2O → Mn2+ + SO42- + 2H+
Because it causes SO2 to undergo oxidation (i.e., lose electrons) and goes through reduction itself, MnO4- is the oxidizing agent in this equation (i.e., gains electrons).
Due of its ability to both reduce MnO4- and oxidize itself, SO2 is the reducing agent.
Mn2+ is not an oxidizing agent because it is the end result of the reduction of MnO4-.
As SO42- is a byproduct of SO2 oxidation, it cannot act as a reducing agent.
MnO4- is therefore the oxidizing agent, whereas SO2 is the reducing agent.
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give the numerical value of ℓ corresponding to the 3p orbital. express your answer as an integer.
The numerical value of ℓ corresponding to the 3p orbital is 1. This is because p orbitals have ℓ values of 1.
In order to find the numerical value of ℓ for a 3p orbital, we need to understand the quantum numbers.
The principal quantum number (n) represents the energy level and can be any positive integer (1, 2, 3, etc.). In this case, n = 3.
The azimuthal quantum number (ℓ) represents the shape of the orbital and can have integer values ranging from 0 to (n-1). The ℓ values correspond to different orbital shapes: 0 is s, 1 is p, 2 is d, and 3 is f.
For a 3p orbital, we are given n = 3 and the orbital shape is p. Since p corresponds to an ℓ value of 1, the numerical value of ℓ for a 3p orbital is 1.
so: ℓ = 1
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The numerical value of ℓ corresponding to the 3p orbital is 1.
In the quantum mechanical description of atomic orbitals, the principal quantum number (n) represents the energy level or shell, and the azimuthal quantum number (ℓ) represents the shape of the orbital. For the p orbitals, ℓ takes the values of 1. The 3p orbital corresponds to the third energy level (n = 3) and has an azimuthal quantum number of 1. Therefore, for the 3p orbital, the value of ℓ is 1.
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How to prevent pipes from bursting in freezing weather?.
Answer:
Explanation:
Insulate pipes. Pipe insulation in your home's crawl spaces and attic helps even if you live in a climate where freezing is uncommon. ...
Use heat tape or heat cables. ...
Seal leaks. ...
Secure outdoor hoses, valves, and faucets. ...
Let water drip. ...
Adjust the thermostat. ...
Open cabinet doors.
Syrah, Shiraz, and Petite Syrah are related because they are essentially the samevarietal.True OR FALSE
The statement "Syrah, Shiraz, and Petite Syrah are related because they are essentially the same varietal" is False. Syrah, Shiraz, and Petite Syrah are not the same varietal, but they are related to each other. The varietal known as Syrah is an Old World grape that is grown in France's Rhône Valley.
The statement "Syrah, Shiraz, and Petite Syrah are related because they are essentially the same varietal" is False. Syrah, Shiraz, and Petite Syrah are not the same varietal, but they are related to each other. The varietal known as Syrah is an Old World grape that is grown in France's Rhône Valley. Shiraz, on the other hand, is a New World grape that is grown primarily in Australia, but also in other parts of the world, including South Africa, New Zealand, and the United States. Both Syrah and Shiraz produce full-bodied wines that are known for their deep color, spicy notes, and high tannin content.
However, Shiraz wines tend to be fruitier and more jammy than Syrah wines. Petite Sirah is another grape varietal that is related to both Syrah and Shiraz. Petite Sirah is a cross between Syrah and Pelours in, another grape varietal that is grown in France. Petite Sirah is grown primarily in California and produces wines that are known for their dark color, high tannin content, and bold, jammy flavors. So while Syrah, Shiraz, and Petite Sirah are related to each other, they are not the same varietal.
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What would happen if our intestines were not coiled (twisted) inside our body?
Answer:
If there is a change in the natural shape of the intestines, this can be known as a twisted bowel. A twist in the small intestine is referred to as a volvulus. Twists in the large intestine are known as a colonic volvulus. These abnormal twists or loops can cause an obstruction or other medical conditions which could be fatal. If signs of twisting bowel present, it is important to seek medical attention as quickly as possible.
What thermodynamic process occurs during the adhesive crosslink process? How do you know this process occurred?
The thermodynamic process that occurs during the adhesive crosslink process is exothermic.
During the adhesive crosslink process, the adhesive undergoes a chemical reaction that forms covalent bonds between the adhesive molecules. This chemical reaction releases energy in the form of heat, which is known as an exothermic process. As the adhesive crosslinks, the material becomes more rigid and gains strength, which is why this process is often used to create strong bonds in materials.
This process can be detected by monitoring the temperature changes in the adhesive during the crosslink process. As the adhesive undergoes crosslinking, the temperature of the material will increase due to the release of heat energy. This increase in temperature can be measured using a thermocouple or other temperature sensing device.
In addition, the chemical structure of the adhesive can also be analyzed to confirm that crosslinking has occurred. Techniques such as Fourier transform infrared spectroscopy (FTIR) can be used to detect changes in the chemical bonds of the adhesive, which can indicate the formation of new covalent bonds between adhesive molecules.
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typically, the ionization energy increases from left to right on the periodic table. however, there are minor irregularities. for example, the ionization of oxygen (group 6a) is lower than nitrogen (group 5a).
Typically, the ionization energy increases from left to right on the periodic table. however, there are minor irregularities. This statement is True.
In general, the ionization energy tends to increase from left to right across a period on the periodic table due to increasing effective nuclear charge, which makes it more difficult to remove an electron. However, there can be exceptions or irregularities due to other factors such as electron-electron repulsion and electron pairing.
The lower ionization energy of oxygen compared to nitrogen can be attributed to the electron-electron repulsion in oxygen's 2p orbital. Oxygen has two paired electrons in its 2p orbital, which creates electron-electron repulsion and makes it slightly easier to remove one of the paired electrons. In contrast, nitrogen has three unpaired electrons in its 2p orbital, which experience less repulsion and require more energy to remove.
These minor irregularities in ionization energy can be observed when comparing elements within the same period or when considering factors beyond just effective nuclear charge.
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The complete question is -
Typically, the ionization energy increases from left to right on the periodic table. however, there are minor irregularities. for example, the ionization of oxygen (group 6a) is lower than nitrogen (group 5a). State whether True or false.
Uniformitarianism is the idea that
Answer:
Uniformitarianism is the idea that the natural processes operating today are the same as the natural processes that operated in the past
What mass of K2SO4 must be added to 1.20 liters of water to produce a 1.50 M solution?
Answer:
313.2 g of \({K_{2} }S O_{4}\) must be added to 1.20 liters of water to produce a 1.50 molar solution.
Explanation:
What is molarity?
Molarity is a unit of concentration of a solution. It is defined by the number of moles of the solute that is present in one liter (1L) of the solution. It is denoted by M. Thus, molarity = \(\frac{Number of moles of the solute (n) }{Volume of the solution (V) (in L)}\)∴ The number of moles of solute = molarity x volume of the solution.According to the given question,
Molarity of the solution = 1.50 MThe volume of the solution = 1.20 LUnknown = Mass of \({K_{2} }S O_{4}\) required.Solution :
∴ Number of moles of solute, here, \({K_{2} }S O_{4}\)
= molarity x volume of the solution
= 1.20 x 1.50 = 1.8
∴ Mass of 1.8 moles of \({K_{2} }S O_{4}\) = 1.8 x molar mass of \({K_{2} }S O_{4}\)
Now the molar mass of \(K_{2} SO_{4}\)
= (Gram atomic mass of K x 2) + (Gram atomic mass of S) + (Gram atomic mass of O x 4)
= (39x2) + 32 + (16 x 4) g
= 174 g.
∴ Mass of 1.5 moles of \({K_{2} }S O_{4}\)
= 1.8 x molar mass of \({K_{2} }S O_{4}\)
= 1.8 x 174 g
= 313.2 g.
Thus, 313.2 g of \({K_{2} }S O_{4}\) must be added to 1.20 liters of water to produce a 1.50 M solution.
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What relationship between electron orbits and light emission did bohr postulate?
The relationship between electron orbits and light emission Bohr postulate is The energy difference between two electron orbits would equal the energy of an emitted photon.
The path is taken by an electron as it circles an atom's nucleus. An atomic orbital is just a function that describes the position and wave-like behavior of an electron within an atom in terms of both atomic theories as well as quantum mechanics. This function may be utilized to determine the likelihood of discovering any atom's electron in any particular area surrounding the nucleus.
The matter that is stimulated can emit light, and as we will demonstrate, excitation can occur from a wide range of sources.
Matter is composed of atoms and molecules, which emit light normally at specific energies. Either spontaneous or induced light emission is possible.
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You have a big bon fire outside in your back yard . Although it is only 40 degrees F, you and your friends are all warm sitting by the fire. This is
Question 14 options:
An exothermic exchange from radiant energy.
An endothermic exchange from conduction.
An exothermic exchange by conduction.
None of the above are correct
Answer:
An exothermic exchange by conduction
Explanation:
Because the heating system (the bonfire) is what is conducting the energy, and is transferring said energy to it’s surroundings, this is an exothermic exchange.
Light with a wavelength of 400 nm strikes the surface of cesium in a photocell, and the maximum kinetic energy of the electrons ejected is 1.54 x 10‐19J. Calculate the work function of cesium?
The work function of the metal is 3.41 * 10^-19 J.
What is the work function?We know that term work function has to do withy the energy that you have to supply so that you can be able to remove an electron from an atom. In this case we are looking at the work function of the atom that is called cesium.
Thus we have;
E = hc/λ
E= energy of the light
h = Plank's constant
c = speed of light
λ = wavelength
Then we would have that the wavelength of the light is given in the question as 400 nm
E = 6.6 * 10^ -34 * 3 * 10^8/400 * 10^-9
E = 4.95 * 10^-19 J
We then have;
KE = E - Wo
KE = kinetic energy
E = energy of the photon
Wo = work function thus we have;
Wo = E - KE
Wo = 4.95 * 10^-19 J - 1.54 x 10‐19J
Wo =3.41 * 10^-19 J
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Which property of sulphuric acid makes it suitable to use as a catalyst for the preparation of esters?
Explain how the energy of a toy car is transformed as it slides down a ramp. Give evidence that the energy of the car remains the same at all points on the ramp. (30 points)
Answer:
As the car starts to slide down the ramp, it is kinetic energy and when it's on the top of the ramp, it is potential energy. We can see that the energy is now being transferred through the car and ramp.
Which of the following elements is most likely to pair with beryllium in a 1:1 relationship based on valence electron trends?
A. Se ( 6 valence electrons )
B. P ( 5 valence electrons )
C. Br ( 7 valence electrons )
D. Li ( 1 valence electron )
The element that is most likely to pair with beryllium in a 1:1 relationship based on valence electron trends would be Se ( 6 valence electrons ). That is option A.
What is a Valence electron?Valence electron is defined as the electron of an atom that is located at the outermost shell which takes part in formation of chemical bonding during a chemical reaction.
The number of Valence electron of the element beryllium = 2
The number of Valence electron of the selenium = 6
Therefore, both beryllium and selenium can form a chemical bond in a 1:1 relationship based on valence electron trends as both will complete their outer most shell into 8 electrons.
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the chemist adds m silver nitrate solution to the sample until silver chloride stops forming. he then washes, dries, and weighs the precipitate. he finds he has collected of silver chloride. calculate the concentration of iron(iii) chloride contaminant in the original groundwater sample.
The concentration of iron(iii) chloride contaminant in the original groundwater sample is (C1 × V1 / V) × 162.2 g/mol.
Given that the chemist adds m silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected of silver chloride. Let us calculate the concentration of iron(iii) chloride contaminant in the original groundwater sample.Calculating the concentration of iron(iii) chloride contaminant in the original groundwater sample
Here is the given information;
Mass of silver chloride precipitate = m grams
Volume of groundwater sample taken = V ml
Volume of AgNO3 solution used = V1 ml
Concentration of AgNO3 solution = C1
Molar Mass of AgCl precipitated = 143.5 g/mol
The molarity of AgNO3 solution is given as;
Molarity of AgNO3 = Number of equivalents / Volume of solution in liters
We know that 1 mole of AgNO3 gives 1 mole of AgCl, i.e., AgNO3 is equivalent to AgCl.Therefore, the number of equivalents of AgNO3 is the same as the number of equivalents of AgCl.
Number of equivalents of AgNO3 = C1 × V1
Number of equivalents of AgCl = m / 143.5 g/mol
Concentration of FeCl3 = (Number of equivalents of FeCl3 / Volume of sample in liters) × Molar mass of FeCl3
Number of equivalents of FeCl3 = Number of equivalents of AgNO3
Number of equivalents of FeCl3 = C1 × V1
Concentration of FeCl3 = (C1 × V1 / V) × Molar mass of FeCl3
Concentration of FeCl3 = (C1 × V1 / V) × 162.2 g/mol
Hence, the concentration of iron(iii) chloride contaminant in the original groundwater sample is (C1 × V1 / V) × 162.2 g/mol.
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Which is a problem with using wind turbines to produce energy?
WA. Wind turbines are efficient only in certain areas.
A.
O C. Wind turbines produce a large amount of energy.
D. Wind turbines create a large amount of pollution.
B. Wind turbines occupy a small area of land.
Answer:
they are only efficient in certain areas
Explanation:
Wind turbine are efficient only in certain areas it is a problem with using wind turbines to produce energy.
What is Wind Turbine?Wind turbine convert the wind energy into the electricity. It is a power generating device that converts the kinetic energy in to electrical energy.
Now lets check all option one by one:
Option (A): Wind turbines are efficient only in certain areas it is a problem with using wind turbines to produce energy because the flow of air from areas of high pressure towards the lower pressure.
So, it is correct option.
Option (B): Wind turbines occupy a lot of space to work.
So, it is incorrect option.
Option (C): Wind turbines produce a large amount of energy is not a problem.
So, it is incorrect option.
Option (D): Wind turbines does not create a pollution or it does not pollute the air or water.
So, it is incorrect option.
Thus, we can say that Wind turbines are efficient only in certain areas it is a problem with using wind turbines to produce energy because the flow of air from areas of high pressure towards the lower pressure.
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Which is heavier, calcium or selenium?
Answer:selenium
Explanation:
Answer: Nether
Explanation: Because if you have one pound of Calcium and one pound of selenium there both the same weight
Which description is true of earth’s four layers?
Answer:
The astenosphere is located below the lithosphere
The mantle is composed of silicate material
Explanation:
The Earth has several different layers, and they can be presented in two different manners, depending on their chemical composition and their physical properties. According to the chemical composition the Earth has three layers, crust, mantle, and core, while in accordance to the physical properties it has five, lithosphere, astenosphere, mesosphere, outer core, and inner core.
The astenosphere is the second layer from the top, and it lies just below the lithosphere. It is also the upper part of the mantle. The mantle is a layer that is largely composed of silicate material, mostly silicate molten rock. It can easily be seen from the volcanic activities that this layer is composed of silicate material because the magma is rich in it, and the magma comes from this layer.
50.0 mL of a Ba(OH)2 solution
were titrated with 66.90 mL of a
0.500 M HCl solution to reach the
equivalence point. What is the
molarity of the Ba(OH)2 solution?
According to the given statement 0.3345 M is the molarity of the Ba(OH)₂ solution.
What is a molarity means?The quantity of a substance in a specific solution volume is known as its molarity (M). The amount of moles of a solute every litre of a solution is referred to as molarity. The molecular concentration of a solution is another name for molarity.
Briefing:Ba(OH)₂+ 2HCl ⇒ BaCl₂ + H₂O
Ratio of moles Ba(OH)₂ ,
HCl = 1:2
Amount of HCl consumed
= 0.500/1000*66.90
= 0.03345 mol
So Ba(OH)₂ reacted = 1/2 * 0.03345 mol
If molarity of Ba(OH)₂ is x then
x/1000*50 = 1/2 * 0.03345
x = 0.3345 M.
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Over time, repeated cycles of heating and cooling can cause a rock to crack. The rock may then break into smaller pieces. What is this process called?
A gas sample has a volume of 0.329 L with an unknown temperature. The same gas has a volume of 0.219 L when the temperature is 30. °C, with no change in the pressure or amount of gas. Part A What was the initial temperature, in degrees Celsius, of the gas? Express your answer as an integer and include the appropriate units. μ μA Ω % O Å SSS ?
The initial temperature in degrees Celsius, of the gas, given that the gas has volume of 0.219 L when the temperature is 30 °C is 182.19 °C
How do i determine the initial temperature of the gas?From the question given above, the following data were obtained:
Initial volume (V₁) = 0.329 LFinal pressure (P₂) = 0.219 LFinal temperature (T₂) = 30 °C = 30 + 273 = 303 KInitial temperature (T₁) =?Now, we can obtain the initial temperature of the gas by using the Charles' law equation as shown below:
V₁ / = V₂ / T₂
0.329 / T₁ = 0.219 / 303
Cross multiply
T₁ × 0.219 = 0.329 × 303
Divide both side by 130
T₁ = (0.329 × 303) / 0.219
= 455.19 K
Subtract 273 to obtain answer in °C
= 455.19 - 273 K
= 182.19 °C
Thus, from the above calculation, we can conclude that the initial temperature is 182.19 °C
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The number of electrons can accommodate in K shell is 8. True or False
Answer:
true
no explanation
3.4. Mortise-and-tenon joints were used in most 18th century timber framing because A. it was the easiest type of joint to produce with the available tools. B. joint strength could not be achieved by any other method. C. metal fasteners were scarce.
D. appearance was of primary importance.
The answer to the question is D. Appearance was of primary importance because of which Mortise-and-tenon joints were used in most 18th century timber framing
Mortise-and-tenon joints were commonly used in 18th century timber framing because they provided a strong and durable joint, but they also allowed for a clean and aesthetically pleasing appearance. While metal fasteners were scarce at the time, it was not the only reason for the use of this joint. The use of mortise-and-tenon joints was also a reflection of the craftsmanship and skill of the builders who wanted to create a lasting and visually appealing structure. Additionally, the tools needed to make mortise-and-tenon joints were readily available and could easily be produced with the primitive tools of the time.
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Which atom has the largest ionization ?
Help please !!
100j100j of heat energy are transferred to 20 gg of mercury. by how much does the temperature increase?
the temperature increase of the 20 g mercury is 35.71 K.
The specific heat capacity of mercury is 140 J/kg·K.
Given that 100 J of heat energy is transferred to 20 g of mercury. We need to determine the temperature increase.
In physics, the relationship between heat transferred and temperature increase is given by
Q = mcΔT,
where
Q is the heat transferred, m is the mass, c is the specific heat capacity and ΔT is the temperature increase.
Substituting the given values, we have100 = 0.02 kg × 140 J/kg·K × Δ
TThus,ΔT = 100 / (0.02 × 140)
ΔT = 35.71 K
Therefore, the temperature increase of the 20 g mercury is 35.71 K.
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Q1) You isolate evolutionarily very similar sucrases from E. coli and from a thermophilic microorganism. They catalyze the same reaction. You compare the rates of sucrose hydrolysis at 37C. Which one of the following will be TRUE for BOTH enzymes? The final extent of glucose + fructose formation will be lesser for the E. coli enzyme (final extent = ratio of products/reactants). The final extent of glucose + fructose formation will be greater for the E. coli enzyme (final extent = ratio of products/reactants). The −ΔG ∘ for catalysis will be greater for the E. coli enzyme The −ΔG ∘ for catalysis will be the same for both enzymes
The right response is d. Both enzymes will have the same ΔG for catalysis.
The reaction rate and equilibrium constant have an impact on the Gibbs free energy (ΔG). No matter the source of the enzyme, such as E. coli or a thermophilic microbe, the ΔG for a reaction is the same. As a result, both enzymes will have the same ΔG for sucrose hydrolysis.
The ΔG may be written mathematically as:
ΔG = -RT ln (K)
T is the temperature, K is the equilibrium constant, and R is the gas constant..
As both enzymes have the same reaction rate (K) and temperature (T), the reaction's ΔG value will likewise be the same.
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What is the residue when the reaction mixture is filtered
Answer:
Filtration can be used to separate an insoluble solid from a liquid, or a precipitate from the reaction mixture in which it formed. The solid which collects in the filter paper is called the residue. The clear liquid which passes through the filter paper is called the filtrate.
Explanation:
i had this question before
what is the function of the cell membrane?
Answer:
Its the thin lining around the cell the moniters what gets in and out of the cell.
Explanation:
Given the blackbody curve of the graph, what color will Star A be?
Blackbody radiation graph for Star A, which has a surface temperature of 17,000 degrees Celsius. At the point where the curve peaks, the wavelength is approximately 400 nanometers, at the far-left end of the visible light spectrum.
Blue
Red
White
Yellow
Star A will have blue color as hottest stars are blue in color.
Effect of temperature Because it reveals the star's surface temperature on the scale of black body radiation, a star's hue is essential for identifying it. 5,500 K is usual for a yellow star and is the temperature of the sun's surface. A bright red star's surface temperature is 3,500 K, while a dark red star's surface temperature is 2,500 K. Red stars are cooler than the sun. With surface temperatures ranging from 10,000 K to 50,000 K, blue stars are the hottest stars known to exist.Nuclear fusion events at stars' cores provide the energy for them to shine. Throughout the course of the star's life, a dynamic equilibrium is maintained between the gravitational forces that keep the star together and the reactive core's expanding heat. High levels of energy are produced through fusion.For more information on color of star kindly visit to
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