How can a piece of wood floating on water illustrate the condition of lowest potential energy and maximumstability?
Answers
The piece of wood floating on water is a great example of a system in equilibrium, exhibiting both maximum stability and the lowest potential energy.
A piece of wood floating on water is in a state of lowest potential energy and maximum stability because it is at equilibrium. When the wood is placed in water, it displaces an amount of water equal to its own weight. The upward force exerted by the displaced water on the wood is known as the buoyant force. The weight of the wood and the buoyant force are equal, so the wood remains at rest. This is the condition of lowest potential energy, as the wood is not experiencing any net force that would cause it to move. Additionally, the wood is at maximum stability because any slight disturbance to its position will cause the buoyant force to shift and bring the wood back to its original position.
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Related Questions
why are so many products made from plastic ?
Answers
Explanation:
Plastic takes time to degrade which means it has great longevity. Plastic does not break as easily as glass or other materials. It lasts long and offers great service. Plastic storage containers offer greater flexibility than any other packaging materials.
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SCIENCE
What is the relationship between a need
in society and a system?
Answers
Answer:
The relation between individual and society is very close. Essentially, “society” is the regularities, customs and ground rules of antihuman behavior. These practices are tremendously important to know how humans act and interact with each other. Society does not exist independently without individual.
Explanation:
e) Give two uses of hydrogen gas.
Answers
Hydrogen can be used in fuel cells to generate electricity, or power and heat. Today, hydrogen is most commonly used in petroleum refining and fertilizer production, while transportation and utilities are emerging markets.
When compared to the standard hydrogen electrode, zinc has a reduction potential of -0.762 volts and copper a reduction potential of + 0.342 volts. What is the reduction potential when zinc and copper are connected to one another?
+0.420 volts
-0.420 volts
+1.104 volts
-1.104 volts
Answers
Answer:
ozcozz8f8txitcizc9zcozozozc9uvpuh
The coolest stars tend to be which color? A. White B. Blue C. Yellow d. Red
Answers
Answer:
D
Explanation:
red
Answer:
Red stars are the coolest along the colors and temperatures of stars.
Explanation:
Hope this helps! <3
What the anode , cathode and the electrolyte of a cell tha t you might use to electrolyte a spoon made from iron with silver?
Answers
The silver coating on the spoon is produced. When electrolyzing a spoon made from iron with silver, the anode, cathode, and electrolyte that can be used are as follows:
Anode: The anode is a negatively charged electrode, usually made of metal or graphite, that releases electrons during electrolysis. It is made of pure silver.Cathode: The cathode is a positively charged electrode that receives electrons during electrolysis. It is made of iron.Electrolyte: The electrolyte is a solution that conducts electricity and contains ions that can be reduced or oxidized. The electrolyte used for this process is a solution of silver nitrate (AgNO3) in water.The silver ion (Ag+) moves from the anode to the cathode through the electrolyte. At the cathode, it accepts an electron, reducing it to metallic silver (Ag). Fe(s) is oxidized to Fe2+(aq) ion at the anode, while Ag+ ions are reduced to Ag(s) at the cathode. Therefore, the silver coating on the spoon is produced.For such more questions on silver coating
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Date:
Question 1: Dynamic Equilibrium (4 points)
A. What information does the equilibrium constant give? (1 point)
Answers
The statement "It tells whether products or reactants are favored at equilibrium" is an information given by equilibrium constant.
What is equilibrium constant?In chemistry, the equilibrium constant, denoted as K, embodies a mathematical construct that establishes a connection between the concentrations of reactants and products in a chemical equilibrium, all under a specific temperature. This constant provides valuable insights into the comparative stability of the products and reactants at the equilibrium state.
Expressed as a product of concentrations, each to the power of its respective stoichiometric coefficient, the equilibrium constant signifies the interplay between the concentrations of the products and reactants.
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Complete question:
What information does an equilibrium constant give?
O A. It tells how long it takes the reaction to reach equilibrium.
B. It tells whether products or reactants are favored at equilibrium.
C. It tells how much energy is required for the reaction to happen.
O D. It tells what the rate constant of the reaction is at equilibrium.
In this lab you will construct several electrochemical cells where both half-cells contain a copper electrode in a copper (II) solution. What standard cell potential (Eºcell would be expected for a voltaic cell comprised only of copper? O 0.68 V O 0.34 V 0 0.0592 V O 0.00 V 0 -0.34 V
Answers
In the lab, electrochemical cells are being constructed with copper electrodes in copper (II) solution for both half-cells. The expected standard cell potential (Eºcell) for a voltaic cell consisting solely of copper is 0.00 V.
The standard cell potential, denoted as Eºcell, represents the potential difference between the two half-cells of an electrochemical cell. It is a measure of the cell's ability to generate an electric current. In this case, since both half-cells contain copper electrodes in copper (II) solution, there is no difference in the reduction potential of the two half-reactions. This results in an equal and opposite potential, leading to a net cell potential of zero. This implies that no spontaneous redox reaction occurs and no electrical energy is generated or consumed within the cell.
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how many elements have scientists discovered
Answers
Answer:
118
Explanation:
The discovery of the 118 chemical element known to exist us of 2021
What happened to the energy of the system when the baking soda mixed with the vinegar?
A
Energy was released to the surroundings in the form of heat,
B
Energy was released to the surroundings in the form of bubbles,
C
Energy was stored in the system to change the phase of the substance,
D
Energy was absorbed by the system to carry out a change in the substance,
Answers
Answer:
C
Explanation:
I hope it help
It help you mixed up
a line-angle formula shows a ring with six vertices and alternating single and double bonds. a cooh group is attached to the first vertex. a br atom is attached to the third (clockwise) vertex. spell out the full name of the compound.
Answers
The compound is named 2,3-dibromo-2,4-hexadienedioic acid, which consists of a six-membered ring with alternating single and double bonds.
The line-angle formula describes a six-membered ring with alternating single and double bonds. To name the compound, we need to consider the functional groups and substituents present.
The carboxylic acid group, -COOH, is attached to the first vertex of the ring. This group is named as "hexanedioic acid" because it contains six carbon atoms in a linear chain. The prefix "hexa-" indicates the presence of six carbons, and the suffix "-dioic acid" denotes the presence of two carboxylic acid groups.
The bromine atom, represented by "Br," is attached to the third vertex in a clockwise direction. Since there are two bromine atoms present, the prefix "di-" is used. Thus, the compound is named "dibromo-hexanedioic acid."
To specify the positions of the bromine atoms, we start numbering the ring from the vertex where the carboxylic acid group is attached, which is the first vertex. Moving clockwise, the second vertex has a double bond, the third vertex has a bromine atom, and the fourth vertex has a double bond. Therefore, the compound is named as "2,3-dibromo-2,4-hexadienedioic acid." The numbers indicate the positions of the substituents in the ring.
In summary, the compound is named 2,3-dibromo-2,4-hexadienedioic acid, which represents a six-membered ring with alternating single and double bonds, a carboxylic acid group attached to the first vertex, and a bromine atom attached to the third vertex in a clockwise direction.
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A substance contains 14.99 grams of carbon, 3.355 grams of hydrogen, and 6.656 grams of oxygen. If the molecular weight of the compound is 60.094 g/mol, what are the empirical and molecular formulas?
Answers
A. The empirical formula of the compound is C₃H₈O
B. The molecular formula of the compound is C₃H₈O
Data obtained from the question Carbon (C) = 14.99 gHydrogen (H) = 3.355 gOxygen (O) = 6.656 gMolar mass of compound = 60.094 g/molEmpirical formula =? Molecular formula =? A. How to determine the empirical formula Carbon (C) = 14.99 gHydrogen (H) = 3.355 gOxygen (O) = 6.656 gEmpirical formula =?Divide by their molar mass
C = 14.99 / 12 = 1.249
H = 3.355 / 1 = 3.355
O = 6.656 / 16 = 0.416
Divide by the smallest
C = 1.249 / 0.416 = 3
H = 3.355 / 0.416 = 8
O = 0.416 / 0.416 = 1
Thus, the empirical formula of the compound is C₃H₈O
B. How to determine the molecular formula of the compound Molar mass of compound = 60.094 g/molEmpirical formula = C₃H₈OMolecular formula =?Molecular formula = empirical × n = molar mass
[C₃H₈O]ₙ = 60.094
[(3×12) + (8×1) + 16]ₙ = 60.094
60n = 60.094
Divide both side by 60
n = 60.094 / 60
n = 1
Molecular formula = [C₃H₈O]ₙ
Molecular formula = [C₃H₈O]₁
Molecular formula = C₃H₈O
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Which energy source is considered nonrenewable?
1) moving water
2) fossil fuel
3) wind
4) biomass
Answers
Answer:
Fossil fuel
Explanation:
Answer:
2
Explanation:
Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.
Why is alchemy no longer accepted?
A. Alchemists were not able to turn other metals into gold.
B. Scientists used evidence, analysis, and experiments to disprove
alchemy.
c. Alchemy became less popular once Aristotle died.
O D. The discovery of radioactivity took people's attention away from
alchemy
Answers
i think the answer is B. scientists used evidence, analysis, and experiments to disprove Alchemy. apologies if its incorrect.
Which of the following represents the second ionisation
energy of boron?
A B(g) → B²*(g) + 2e AH = + 2427 kJ mol-¹
B B*(g) → B²*(g) + e AH = + 2427 kJ mol-¹
C B(g) → B²(g) + 2e AH = -2427 kJ mot¹
D B*(g) → B²+ (g) + e AH = -2427 kJ mol-¹
E
Answers
Hope this helps
pb express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. for example, [he]2s22p6 should be entered as [he]2s^22p^6.
Answers
Answer:
[Xe]6s^2,4f^14,5d^10
Explanation:
See the image attached:
I need help please please please
Answers
The toxic chemicals is different from the safe chemical because the stronger attraction between it's molecule than the safe chemical.it molecule now move away from each. The correct option is C
What is toxic chemical?Toxic chemical can be defined as a substance that can be poisonous or cause health effects. Some examples of toxic chemical include ammonia, acid, bleach, chlorine, and carbon monoxide.
Therefore toxins are substances created by plants and animals that are poisonous to humans. Toxins may also include some medicines that are helpful in small doses but poisonous in large amounts.
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a 6.57-g sample of niso4•6h2o (molar mass 262.84) is dissolved in enough water to make 50.00 ml of a green solution, and 7.15 g of na2co3•10h2o (molar mass 286.14) is dissolved in enough water to make 50.00 ml of a colorless solution. the two solutions are mixed, and a green precipitate forms. the resulting slurry is divided into two equal portions. to one portion is added an excess of 6 m hcl, which results in the disappearance of the precipitate and a rapid evolution of a gas. to the second portion is added a few milliliters of 6 m nh3. the precipitate dissolves, and a blue solution forms.
Answers
When the solution are mixed together, the gas that evolved must be Carbon dioxide.
There are two reactions:
When nickel sulphate reacts with sodium sulphate which gives nickel carbonate with sodium sulphate.
1) NiSO₄ (aq) + Na₂SO₄ (aq) = NiCO₃ (s) + Na₂SO₄
The resultant is a green solid.
When the resulting slurry i.e. the nickel carbonate reacts with hydrochloride, gives nickel chloride, carbon dioxide and water, and also the disappearance of the precipitate.
2) NiCO₃ (s) + 2 HCl (aq) = NiCl₂ + CO₂ + H₂O
When the evolved gas is added to NH₃ solution it dissolves the precipitate and forms a blue solution which gives the confirmation that the gas so evolved is carbon-di-oxide.
The given question was incomplete, complete question is:
"A class is given a demonstration of solution chemistry and solubility equilibria.Passage: A 6.57-g sample of NiSO₄•6H₂O (molar mass 262.84) is dissolved in enough water to make 50.00 mL of a green solution, and 7.15 g of Na₂CO₃•10H₂O (molar mass 286.14) is dissolved in enough water to make 50.00 mL of a colorless solution. The two solutions are mixed, and a green precipitate forms. The resulting slurry is divided into two equal portions. To one portion is added an excess of 6 M HCl, which results in the disappearance of the precipitate and a rapid evolution of a gas. To the second portion is added a few milliliters of 6 M NH₃. The precipitate dissolves, and a blue solution forms.Question: According to the information in the passage, the gas that evolves is:
A) sulfur dioxide. B) sulfur trioxide.
C) carbon dioxide. D) carbon monoxide".
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what controls the amount of light that enters the eye?
Answers
Answer:
iris is what controls the amount of light that enters the eye
Explanation:
Answer:
Iris
Explanation:
The Iris opens and closes to control the amount of light entering the eye through the pupil.
how much energy is needed to convert 120g of ice at -35°C to steam at 150°C?
Answers
The estimate obtained from a sample of which size is likely to be closest to
the actual parameter value of a population?
O A. 15
B. 30
C. 85
D. 50
Answers
the closest value is C, 85.
hope it helps!!!!
85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population. Therefore, the correct option is option C.
What is population?A population is the entire set of people in a group, whether that group is a country or a collection of people who share a certain trait. A population is the group of people where a statistical sample has been collected in statistics. Hence, a population is any collection of people who have something in common.
A statistically substantial chunk of a population, rather than the full population, may also be referred to as a sample. For this reason, the standard deviation, meaning standard error, of a statistical study of a sample from the full population must be disclosed. Only a population-wide analysis would have zero standard deviation. 85 is the estimate value that is obtained from a sample of which size is likely to be closest to the actual parameter value of a population.
Therefore, the correct option is option C.
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What is the elixir of life
Answers
Answer:
The elixir of life, also known as elixir of immortality and sometimes equated with the name philosopher's stone, is a potion that supposedly grants the drinker eternal life and/or eternal youth. This elixir was also said to cure all diseases.
Is the Earth's surface covered with the same materials?
What was different about each scientific drilling site?
What is the same for all of the drilling sites we examined?
Answers
The Earth's surface is not covered with the same materials ; however, some areas share similar materials.Several drilling sites have been dug in various regions of the planet to analyze the Earth's surface.
Each drilling site is unique, with differing characteristics and results. Despite these differences, all of the drilling sites analyzed offer scientists a more in-depth knowledge of the Earth's surface.In essence, the scientific drilling sites each had different lithologies, stratigraphies, and geologies. Each site had different types of rocks, depths, and ages, which led to varying drilling conditions, depths, and equipment used. Different types of equipment were also used to reach the depths required, which was a significant difference in each drilling site.The scientific drilling sites also had different purposes. Scientists had specific goals they wanted to achieve at each location. For example, the scientific drilling site in the Iceland region was focused on analyzing a unique layer of igneous rocks. The primary objective was to investigate the formation of the rock layer.The same materials were not found at each scientific drilling site.
Still, they had some similarities. They all provided geologists with vital information about the Earth's surface. The data provided from each drilling site was used to piece together the Earth's geologic history and how it has changed over time.
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When a chemical system is at equilibrium, the concentrations of the reactants are equal to:___________.
1. the concentrations of the products.
2. the concentrations of the reactants and products have reached constant values.
3. the forward and reverse reactions have stopped. the reaction quotient, , has reached a maximum.
4. the reaction quotient, , has reached a minimum.
Answers
Answer:
catalyst
Explanation:
Oxygen forms a number of compounds with sulfur, many of which are quite reactive. One such compound is 57.20 % by mass S . Calculate the number of grams of oxygen present in a sample of this compound that contains 40.00 grams of S . g O
Answers
The number of grams of oxygen present in a sample of this compound that contains 40.00 grams of S = 29.9g of oxygen
Calculation of quantity of OxygenThe compound contains the following:
sulphur = 57.20%
Oxygen= 100 - 57.20 = 42.80%
If 57.20% of the sample contains 40g of sulphur then 42.80% of the sample will contain X.
Make X the subject of formula,
X = 42.8 × 40/57.20
X= 1712/57.20
X= 29.9g of oxygen
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Which of these can be used as an inert electrode?
copper
platinum
silver
zinc
Answers
Answer:
I believe it is platinum
Explanation:
I think it is, haha
Answer:
zinc
Explanation:
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Write the formulas of the conjugate base of the following acids: a) HNO2 b) H2SO4 c) H2S d) HCN e) HCOOH
Answers
The formulas of the conjugate base of the following acids \(NO_{2} -NO_{2}, -,HSO_{4} - ,HS-,CN,HCOO\).
What are acids, and what varieties are there?They usually fall under the categories of acetic molecule and mineral acid. Inorganic Acid This is acid that is derived from living things like plants and animals. Citric acid (found in fresh fruits), acetic acid (in vinegar), oleic acid (in olive oil), etc. are a few examples. Mineral Acid: Minerals are the source of mineral acid.
Is salt acidic?A neutral salt is chloride, which is produced by neutralizing sodium hydroxide and hydrochloric acid. Any strong acid that is neutralized by such a good base always produces a neutral salt. However, salts can generally be classified as acidic, basic, or neutral.
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How many moles of electrons are transferred when 2.0 moles of aluminum metal react with excess copper(II) nitrate in aqueous solution to form Al(NO3)3(aq) and Cu(s)
Answers
Moles of electrons:
The moles of electrons that are transferred are 12F
A balanced equation:
2 moles of Aluminium metal react with excess copper(II) nitrate.
\(2Al + 3Cu{(NO_3)}_2 \rightarrow 2Al{(NO_3)}_3 +3 Cu\)
Given:
Moles of Aluminium = 2
As Aluminium goes from 0 to +3 oxidation state
\(Al \rightarrow Al^{3+} + 3e^-\)
And copper goes from +2 to 0
\(Cu^{2+} + 2e^-\rightarrow Cu\)
On balancing the number of electrons we get:
For 1 mole of Al \(6e^-\) is required.
Therefore for 2 moles of Al,
Total \((2\times6)\)F mole of electrons
Where F= Faraday's constant= 96500 C
So, 12F moles of electrons are transferred.
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This polymer is made from a small molecule that repeats itself. The small molecule has two carbon atoms and four hydrogen atoms. The polymer is a widely used plastic. What is this polymer?
Answers
Answer:
Polyethylene
Explanation:
Polyethylene is made of the ethylene monomer (C2H4). Polyethylene is a linear, manmade, addition homopolymer used in the manufacturing of plastic materials.
Polyethylene is a light weight synthetic polyolefin used for many different purposes. High density and low density polyethylene materials are available and used for different purposes.
Suppose a sample of Carbon Dioxide and a separate sample of water are held each at a temperature of -80°C and a pressure of 5.00 atm. The temperature of each sample is gradually increased to 10°C while keeping the pressure constant. What will happen to each sample? Select the correct answer. The water will undergo: melting, freezing, sublimation, deposition, vaporization, condensation. The carbon dioxide will undergo: melting, freezing, sublimation, deposition, vaporization, condensation.
Answers
Answer: Carbon dioxide will undergo sublimation and water will undergo melting. When the temperature of a substance is increased while keeping the pressure constant, the substance will undergo a phase change if the temperature is greater than its melting or sublimation point. Since the melting point of water is 0°C and the sublimation point of carbon dioxide is -78.5°C, both substances will undergo a phase change as the temperature increases from -80°C to 10°C.