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.
Answers
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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Related Questions
if you were given an unknown sample, how would you determine if it was a suspension, colloid or homogeneous solution?
Answers
The Tyndall effect can be used to detect whether an unknown sample is a suspension, colloid, or homogeneous solution.
Light can always travel through a solution, and there is never any general light scattering. Between solutions and suspensions, a colloid exists. By diffusing the incoming light, it produces the Tyndall effect. A suspension is hazy and contains visible suspended particles. The suspensions obstruct the passage of light.
A combination that is heterogeneous and has some of its particles settle out as it stands is called a suspension. Therefore, if a beam of light is passed through your sample and it scatters, it is either a suspension or a colloid. It is a solution if it doesn't scatter.
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Rewrite and balance this equation: FeS + HBr --> FeBr2 + H2S
Answers
Answer:
FeS + 2HBr ---> FeBr2 + H2S
Explanation:
Judging from the subscripts on the right hand side of the given forward reaction Br has 2 molecules and Hydrogen also has 2 molecules.
next we rewrite the equation in a "balanced" manner to equate both the left and right hand side with each other.
tip: be careful of multiplications of subscripts with the coefficient of the given compound to avoid balancing errors.
Observe the phase-change diagram of an unknown substance below. What would be the meeting point of this substance? Can someone help with this? Thanks
Answers
Answer:
im pretty sure its b
Explanation:
When any substance converts to liquid then heat is required to break the intermolecular forces of attraction between the particles. In this process heat increase but temperature remains the same. The line along B represents the melting of unknown substance. Therefore the 72°C is melting point of the substance.
What is phase transition?Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure. Phase transition is a physical process as there is no breaking of old bond and forming of new bonds takes place.
During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing.
The line along B represents the melting of unknown substance. Therefore the 72°C is melting point of the substance.
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What property of a metal does the image represent
Answers
Answer:
malleable
Explanation:
The image represent in malleable property of metal.
The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.
Explanation:Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.
Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.
Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.
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define lenght and mass
Answers
Answer:
The distance between any two points is called length. The quantity of matter contained in a body is called its mass.
What is the mass percentage composition of O in L-carnitine (C7H15NO3), a compound that is taken as a dietary supplement to re- duce muscle fatigue?
Answer in units of %. Your answer must be within ± 3.0%
Answers
Answer:
3.5% not sure but thank it is
The Royal Society of London was formed
to encourage scientists to debate science philosophy
to provide a meeting place for alchemists
to encourage scientists to share experimental data
to fund the work of upper-class scientists
Answers
What activities decrease your carbon footprint?.
Answers
Activities like saving electricity, water, fuel, etc. decrease your carbon footprint.
Stop purchasing water in plastic bottles. Include some of your frequent short-trip destinations on a walking or bike route. When not in use, unplug electronics and turn off the lights. Eat less red meat and more locally produced foods. To save time and money, wash your items on the cold water cycle. Some of the things we can do to lessen our carbon impact include these.
Food, consumption, transportation, and household energy are the main sources of carbon footprints. The total amount of greenhouse gases (such as carbon dioxide and methane) produced by our actions is known as a carbon footprint. One of the highest rates in the world, the average carbon footprint of a person in the United States is 16 tons.
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Which of these materials will NOT dissolve at all in water?
A) Sugar
B) Salt crystals
C) Chalk powder
D) Detergent powder
Answers
Answer:
C) Chalk powder
Explanation:
that's why it's often used in gymnastics ~~sweaty hands yk
what is the difference between atomic mass and atomic number? To know the answer, let’s look at some key differences below.
Answers
Answer: Atomic mass is associated with the number of neutrons and protons that are present in a particular nucleus of an element. Atomic number is usually the number of protons present in an element's nucleus
If you want to find the number of protons and electrons you look at the atomic number. If you want to find the number of neutrons you need to subtract the atomic number from the mass. If the mass have something like 35.453 the mass will be 35. But if it's like 10.811 the mass will be 11 because if the number after the decimal is five or higher then the number before the decimal will go up one.
Explanation:
b. 8500°C 600°C d. 3700°C с C 9. Which organic acid is found in apple a. Tannic acid b. Malic acid c) Lactic acid d citric acid
Answers
Answer:
b. Malic Acid
Explanation:
Malic (organic) Acid is found in apple.
GL
what is physical change and chemical change
Answers
Answer:
Physical change occur when objects or sub undergo a change that does not change their chemical composition.
Chemical change us a permanent change which occur when a substance combined with another to form a new substances.
In addition to how much force Earth exerts on the object, which features of an object affect its weight?
EEEE
O mass and location of the object
O shape and location of the object
O location of the object and how much energy the object has
O mass of the object and how much energy the object has
Answers
Answer:
mass of the object and how much energy the object has
You are working at a DOE site contaminated with uranium left over from the processing of uranium ore for use as nuclear fuel The groundwater contains uranium in the U^6+ oxidized state (which is soluble and has E'_0 = +0 27 V) This uranium is moving in the groundwater towards an aquifer used as drinking water for the local community What can we do that might plausibly slow or stop the migration of the uranium and prevent it from reaching the drinking water? pump oxygen down to the U^6+ to so that iron oxidizing bacteria can further oxidize the uranium to U^4+ which is insoluble and unable to move though the groundwater pump an organic electron donor, such as lactate, down to the U^6+ to so that iron oxidizing bacteria can further oxidize the uranium to U^4+ which is insoluble and unable to move though the groundwater pump oxygen down to the U^6+ to so that metal reducing bacteria can reduce the uranium to U^4+ which is insoluble and unable to move though the groundwater pump nitrate down to the U^6+ to so that metal reducing bacteria can reduce the uranium to U^4+ which is insoluble and unable to move though the groundwater pump an organic electron donor, such as lactate, down to the U^6+ to so that metal reducing bacteria can reduce the uranium to U^4+ which is insoluble and unable to move though the groundwater
Answers
The correct answer is to pump an organic electron donor, such as lactate, down to the U6+ to so that iron oxidizing bacteria can further oxidize the uranium to U4+ which is insoluble and unable to move though the groundwater.
In the given scenario, the groundwater contains uranium in the U6+ oxidized state that is soluble and moving in the groundwater towards an aquifer that is used as drinking water for the local community. It is necessary to take steps to stop the migration of uranium and prevent it from reaching the drinking water. The most plausible method is to pump an organic electron donor, such as lactate, down to the U6+ to allow iron-oxidizing bacteria to further oxidize the uranium to U4+. The U4+ is insoluble and unable to move through the groundwater, so the local community's drinking water is protected.
The method of pumping an organic electron donor, such as lactate, down to the U6+ to allow iron-oxidizing bacteria to further oxidize the uranium to U4+ is the most effective and plausible way to prevent the migration of uranium and safeguard drinking water for the local community.
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4. (a) Draw resonating structure of Phenol. 5. What happens when (write the reactions involved) (a) Cyclohexanol reacts with concentrated sulfuric acid and resulting product is ozonolyzed (b) Phenol is heated with CH3COCl (c) Propyne reacts with hydrogeniodide in presence of benzene peroxide (d) Propoxypropane is reacted with access of NH3
Answers
(a) Draw resonating structure of PhenolPhenol is a common organic molecule. It consists of a phenyl group (C6H5) attached to a hydroxyl group (OH). The hydroxyl group is connected to the benzene ring at the para position, denoted as p-phenol.
The two main resonating structures of Phenol are shown in the figure below: This reaction takes place by cleaving the double bond of Cyclohexene using ozone, followed by a reductive workup step.
(b) Phenol is heated with CH3COCl:When Phenol is heated with Acetyl Chloride, it forms Acetophenone. The reaction is as follows:Phenol reacts with Acetyl Chloride to form Acetophenone, with the elimination of HCl as a by-product.(c) Propyne reacts with hydrogeniodide in the presence of benzene peroxide:Propyne reacts with hydrogen iodide in the presence of benzene peroxide to form 2-Iodopropane.
The reaction proceeds via a radical mechanism, as shown below:The chain initiation step:This step involves the homolytic cleavage of the benzene peroxide bond to generate benzene and two free radicals. These free radicals then interact with hydrogen iodide to form iodine radicals.The chain propagation step:The chain propagation steps involve the following sequence of reactions:The chain termination step:
This reaction involves the formation of 2-Iodopropane.(d) Propoxypropane is reacted with access of NH3:Propoxypropane is reacted with excess of NH3 to form Propylamine. The reaction is as follows:Propoxypropane undergoes nucleophilic substitution with ammonia, followed by deprotonation, to form the corresponding amine. Excess ammonia is required to drive the reaction to completion.
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True or false? Simple molecular substances never contain metals.
Answers
Answer:
good morning! the answer to your question is true
Explanation:
have a wonderful day!
Answer:
True
Explanation:
Covalent bonds form between non-metal atoms. Covalently bonded substances are simple molecular substances.
William James described the ________ as doing the thinking and sensing; the ________ is the descriptive object of thoughts about the self.
Answers
William James described the human mind as doing the thinking and sensing; the self is the descriptive object of thoughts about the self.
William James, a renowned philosopher and psychologist, described the "mind" as doing the thinking and sensing, while the "self" is the descriptive object of thoughts about oneself. According to James, the mind is responsible for all our cognitive processes, including perception, memory, and reasoning. It helps us make sense of the world around us and allows us to react and respond accordingly.
On the other hand, the self is the individual's perception and understanding of themselves. It is the subjective experience of being oneself, and it is shaped by personal experiences, cultural background, and social interactions. James' insights into the mind and the self have had a significant impact on modern psychology and continue to influence our understanding of human consciousness and behavior.
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Choose the best match for each description. You can use each term once. ASAP
Answers
Answer: I hope this helps.
Explanation:
Identifying Parts of a Chemical Reaction
Answers
Given chemical reaction,
Glucose + Oxygen → carbon dioxide + water
Reactants : Glucose and oxygen.
Products : carbon dioxide and water.
Parts of chemical reaction:Each chemical reaction is made up of three main components: the reactants (located on the left side of the reaction equation), the products (located on the right side of the reaction equation), and the particular reaction conditions, which are listed above or below the arrows in the middle of the reaction equation.
Combustion is one of the five fundamental types of chemical reactions, along with combination, decomposition, single-replacement, and double-replacement. You can classify a reaction into one of these groups by looking at the reactants and products of the reaction in question. It is possible for some reactions to fall into more than one category.
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If the pressure in the jar is raised very high, the ideal gas law breaks down. why is this happening
Answers
**The breakdown of the ideal gas law at high pressures** occurs due to the **intermolecular forces** becoming significant and the **volume of gas particles** becoming significant compared to the total volume of the gas.
The ideal gas law, PV = nRT, assumes that gas particles are point masses with negligible volume and that there are no intermolecular forces between them. However, at high pressures, the volume occupied by the gas particles becomes significant, and the intermolecular forces start to affect their behavior. The ideal gas law fails to account for these factors, leading to deviations from its predictions. Real gases tend to deviate from ideal behavior under high-pressure conditions, necessitating the use of alternative equations, such as the van der Waals equation, to accurately describe their properties.
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Which is a property of potassium (K)?
A. It is dull and brittle.
B. It is extremely reactive.
C. It is not reactive.
D. It is white and hard.
Answers
Answer:
B: It is extremely reactive
Explanation:
Potassium metal is also soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity.
Answer: Properties, occurrence, and uses. Potassium metal is soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity. Potassium imparts a lavender colour to a flame, and its vapour is green.
Explanation: hope it helps
Help on this question please
Answers
Answer:
D
Explanation:
NO and O2 are both colourless gas. and its product is brown. thus when a brown gas is produced, you can say that NO and O2 reacted to form NO2
How do you write the formula for a compound made from Fe 3+ and OH -1 ions?
a: FeOH
b: Fe3OH
c: FeOH3
d: Fe (OH)3
Answers
You need one Fe and three OH
Calculate the heat (q) in kJ released with combustion of methanol using 626 grams of water and the change in temperature is 5.2 degree Celsius. The specific heat of water is 4.18 J/(g*C). Report and round your answer the an integer.
Answers
To calculate the heat released with combustion of methanol, we need to use the formula: q = m * c * ΔT, where q is the heat released, m is the mass of the water, c is the specific heat of water, and ΔT is the change in temperature.
Given that we have 626 grams of water and the change in temperature is 5.2 degree Celsius, we can substitute these values into the formula and get:
q = 626 g * 4.18 J/(g*C) * 5.2 C
q = 13,232.48 J
To convert this to kJ, we can divide by 1000:
q = 13.23 kJ
Therefore, the heat released with combustion of methanol is 13.23 kJ.
Combustion of methanol is an exothermic reaction, which means it releases heat. The heat released is used to raise the temperature of the water. This is known as the heat of combustion of methanol.
The heat of combustion of a substance is the amount of heat energy released when one mole of the substance is burned completely in oxygen. Methanol has a heat of combustion of -726 kJ/mol, which means that when one mole of methanol is burned completely, it releases 726 kJ of heat energy.
In this case, we did not use one mole of methanol, but rather a certain mass of water. However, we can still calculate the heat released using the mass of water and the change in temperature, as we did above.
Overall, calculating the heat released with combustion of methanol is important in understanding the energetics of this reaction and its potential applications in industries such as energy production and transportation.
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terry usually rides his bike at 15 mph. if his riding speed is reduced by 3 mph,
Answers
Answer: 12
Explanation: gaming
Would love some help pleaseee. and please at least read the question instead of skipping it please.
Measuring tools can have errors. Errors lead to ___________________ results and _______________ conclusions. To calculate the difference of the accepted value and the experimental value, scientists use this formula:
percent error = (experimental value − ) × 100. accepted value
Minimizing Bias
People show bias when they want everyone to accept their results. Bias can arise for many reasons:
• Companies show bias when they depict only the research details that are in the best interest of their ____________.
• Scientists may be biased toward their _____________ and modify results suit their needs.
• Scientists may also show to bias get their research published in ______________ ______________.
Such biases often lead to _______________ facts. An important part of scientific thinking is identifying biases and taking the necessary steps to minimize them.
For results to be considered scientifically accurate, any scientist, regardless of his or her own bias, should be able to replicate the experiment and get the same results.
Summary
Think of some studies you’ve heard about. How can you tell whether the studies were well-designed and scientifically accurate or had biases?
Answers
Answer: this looks like your homework
Explanation:if you want help you are going to have to ask a specific question instead of giving people your homework.
Answer:
Honestly I would search this up maybe there might be a pdf with the answers. Sorry chemistry isn't my thing:(
Explanation:
how do low mass stars become white dwarfs?
Answers
Explanation:
Because the core is out of fuel, the white dwarf will eventually cool to a black dwarf. ... This will take many billions of years to cool. Degenerate gas pressure inside the core continues to support the star so it doesn't collapse.
Answer:
because the core is out of fuel, the white dwarf will eventually cool to a black dwarf this will take many billions of year to cool . degenerate gas pressure inside the core continuous to support the star so it doesn't collapse
in chemistry, a mole consists of: question 9 options: approximately 6.02*1023 atoms exactly 6.02*1023 things approximately 6.02*1023 things approximately 6.02*1023 molecules
Answers
A mole is Avogadro's number of particles, which is exactly 6.02214076×10^23. For all practical purposes, the mass of one mole of a compound in grams is approximately equal to the mass of one molecule of the compound in daltons.
In chemistry, a mole is a standard scientific unit for measuring significant amounts of very small things such as atoms, molecules, or other designated particles.
On May 20, 2019, the General Conference on Weights and Measures defined the mole as this quantity for the International System of Units (SI).
Previously, the mole was defined as the number of atoms determined empirically to be present in 12 grammes of carbon-12. In honour of the Italian physicist Amedeo Avogadro, the number of units in a mole is also known as Avogadro's number or Avogadro's constant (1776–1856).
Avogadro postulated that identical quantities of gases under the same circumstances contain the same number of molecules, a notion that proved beneficial in estimating atomic and molecular weights and gave rise to the mole concept.
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why are ionic solids brittle
Answers
Answer:
-The ionic solids are hard and brittle because the ions in ionic solids are held in a lattice due to the electrostatic forces of attraction in cations and anions as well as the repulsion with the like charges. ... Because the ionic solids are localized, these solids tend to be stiff and brittle like covalent solids.
Explanation:
what isotope is produced by the beta decay of carbon-14
Answers
The carbon-14 in presence in the object undergoes beta decay, transforming into a stable isotope of nitrogen.
A proton is released and a neutron is captured when they combine with a nitrogen atom, resulting in the unstable isotope of carbon C-14. The outcome is that nitrogen is changed into a carbon atom with 14 nucleons as a result (6 protons and 8 neutrons). Carbon-14 emits beta particles as it degrades and transforms back into nitrogen.
Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with a nucleus containing 6 protons and 8 neutrons. Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples. Carbon-14 was discovered on 27 February 1940, by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory in Berkeley, although its existence had been suggested by Franz Kurie in 1934.
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