A fixed amount of an ideal gas is held in an isolated container behind thin membrane: The membrane suddenly breaks What happens next? The pressure and temperature both decrease rapidly: The temperature decrcases rapidly but the pressure stays canstant The pressure decreases rapidly; but the temperature remains constant:
Answers
When the membrane of the isolated container holding a fixed amount of an ideal gas suddenly breaks, several factors come into play regarding the subsequent changes in pressure and temperature.
Let's consider each scenario individually:
1. If both the pressure and temperature decrease rapidly:
In this case, the sudden release of the gas from the container leads to a rapid expansion. The expansion causes the gas molecules to spread out and occupy a larger volume. As the gas expands, it does work against the surroundings, resulting in a decrease in pressure. Simultaneously, the rapid expansion leads to a decrease in the kinetic energy of the gas molecules, which corresponds to a decrease in temperature. The decrease in temperature is a consequence of the gas molecules losing energy while performing work against the external environment.
2. If the temperature decreases rapidly, but the pressure remains constant:
This scenario suggests that the gas does not expand significantly or encounter any resistance from the surroundings. If the pressure remains constant, it means that the gas is either contained in a rigid container or experiences external forces that counteract its tendency to expand. In this case, even though the membrane breaks, the gas does not undergo substantial expansion, which explains why the pressure stays constant. However, the sudden release of gas molecules without performing work against the surroundings causes a decrease in their kinetic energy, leading to a rapid decrease in temperature.
3. If the pressure decreases rapidly, but the temperature remains constant:
This situation indicates that the gas experiences little to no resistance from the surroundings and is free to expand. As the gas expands, it does work against the external environment, resulting in a decrease in pressure. However, since the temperature remains constant, it suggests that the gas is either in contact with a heat reservoir or the expansion occurs quickly enough that there is no significant heat transfer. Consequently, there is no change in the average kinetic energy of the gas molecules, and the temperature remains constant.
It's important to note that these scenarios assume an ideal gas behavior and neglect any additional factors that might influence the system, such as the presence of other gases, the specific nature of the container, or any energy exchange with the surroundings.
To know more about the ideal gas behavior refer here :
https://brainly.com/question/28535240#
#SPJ11
Related Questions
Juan's mother drives 7.25 miles southwest to her favorite shopping mall. A. Average velocity is the total displacement divided by the total time taken. What is the average velocity of Juan's mother's automobile if it arrives at the mall in 20.0 minutes? B. Does the average velocity reflect the how fast Juan's mother was driving at every point in her journey? Explain your answer by comparing the terms average velocity and instantaneous velocity.
Answers
Answer:
See explanation
Explanation:
Average velocity = distance traveled/time
distance traveled = 7.25 miles
Time taken = 20 minutes or 0.33 hours
Average velocity = 7.25 miles/0.33 hours = 21.97 miles per hour
This average velocity does not reflect how fast Juan's mother drove at every point in the journey.
At every point in the journey, Juan's mother had an instantaneous velocity given by the velocity at that given instant divided by time taken up to that point.
The instantaneous velocity gives the velocity at particular instants throughout the journey while the average velocity reflects the average velocity of the entire journey.
how does the 1hh nmr support he proposed structure based on chemicall shiftt assignmens and j values (coupling constants) of the aromaic hydrogen vanillin g
Answers
The 1H NMR spectrum supports vanillin's proposed structure through consistent chemical shift assignments and coupling constants of the aromatic hydrogen atoms.
1H NMR spectroscopy can uphold the proposed design of vanillin by giving data on the substance shift tasks and coupling constants of the fragrant hydrogen molecules. On account of vanillin, the normal compound shift of the fragrant hydrogen iotas is between 6.5-8.5 ppm, which is predictable with the noticed signs in the NMR range. The coupling constants between the sweet-smelling hydrogens can likewise be utilized to help the proposed structure, as they can give data on the replacement example of the fragrant ring.
In vanillin, the coupling steady between the ortho-hydrogens is normally bigger than that between the meta-hydrogens, which is reliable with the proposed replacement design. Generally speaking, the 1H NMR range can give important data on the compound construction of vanillin and backing the proposed structure in view of substance shift tasks and coupling constants of the fragrant hydrogen particles.
To learn more about chemical shift assignments, refer:
https://brainly.com/question/30598795
#SPJ4
The unique properties of an element will definitely change into those resembling another element if we alter the number of
Answers
The unique properties of an element will definitely change into those resembling another element if we alter the number of protons in its nucleus.
The number of protons in an element's nucleus is what defines it as a unique and distinct chemical species. It is called the atomic number and determines the element's identity. The unique properties of an element, such as its chemical reactivity, physical state, and chemical behavior, are determined by its atomic structure.
If we alter the number of protons in an element's nucleus, we change its atomic number and thus its identity. The element will turn into another element with different physical and chemical properties, which may or may not resemble its former characteristics.
For example, if we add two protons to an atom of carbon (which has six protons), turning it into an atom of oxygen (which has eight protons), we change its unique properties, such as carbon's ability to form four covalent bonds and its role in organic chemistry. Oxygen, on the other hand, is a reactive gas that supports combustion and is a vital component of many biomolecules.
In summary, the number of protons in an element's nucleus is essential in determining its unique properties. Altering this number would modify its atomic identity, leading to different physical and chemical properties, which may or may not resemble its former characteristics.
To know more about protons, visit:
https://brainly.com/question/1481324
#SPJ11
you have isolated a gram-positive rod. what should you do next?
Answers
After isolating a gram-positive rod, the next step would be to perform additional tests to identify the exact species of the rod. Some tests that can be conducted include catalase test, oxidase test, and biochemical tests like API systems or Vitek systems.
These tests help to determine the metabolic properties of the bacteria, allowing for a more accurate identification. Once the species is identified, further tests can be conducted to determine its susceptibility to antibiotics and other treatments. It is important to identify the species accurately as some gram-positive rods can be pathogenic and cause infections in humans and animals.
After isolating a gram-positive rod, the next steps involve performing additional tests to identify the specific bacterium. Start with a catalase test to differentiate between catalase-positive and catalase-negative bacteria. If positive, conduct tests such as coagulase and mannitol fermentation to distinguish between species like Staphylococcus. If negative, proceed with a spore stain and tests like hemolysis patterns on blood agar to differentiate between Streptococcus and other gram-positive rods like Bacillus or Clostridium. Finally, use biochemical tests, such as carbohydrate fermentation and API strips, to confirm the bacterial identification.
To know more about metabolic :
https://brainly.com/question/15464346
#SPJ11
13. What would be the boiling point in degrees celcius of the solution in number 12?
(Kb of water is 0-.512 °C/m)
Answers
The boiling point of the solution in number 12 would be 100.624 °C.
How do we determine the value?The boiling point of a solution depends on many factors, including the concentration of the solute and the nature of the solvent. The value you provided (Kb of water = 0.512 °C/m) is the molal boiling point elevation constant, which is used to calculate the change in boiling point of a solvent when a solute is added. Using the molar boiling point to multiply the number ascribed to the degree Celsius of the solution which is 12 plus the boiling point of water. which is 100..
Therefore, the correct answer is as given above
learn more about boiling point: https://brainly.com/question/40140
#SPJ1
Which of the following has no effect on oxyhemoglobin dissociation which is the ability to release oxygen at body capillaries? Multiple Choice Erythrocyte count 0 Fever Fever 0 Epinephrine 0 Thyroid hormone 0 Low pH LOW PH
Answers
The correct option is c. Epinephrine has no effect on oxyhemoglobin dissociation.
Epinephrine, also known as adrenaline, does not directly affect the ability of oxyhemoglobin to release oxygen at body capillaries. Oxyhemoglobin dissociation, also referred to as the oxygen-hemoglobin dissociation curve, is primarily influenced by factors such as pH, temperature, partial pressure of carbon dioxide (PCO2), and 2,3-bisphosphoglycerate (BPG) levels. These factors alter the affinity of hemoglobin for oxygen, influencing its release at capillaries to meet the oxygen demands of tissues.
Among the options provided, epinephrine does not have a direct impact on oxyhemoglobin dissociation. It is important to note that while epinephrine does not directly affect oxygen release, it can have other physiological effects, such as increasing heart rate, blood pressure, and respiratory rate. The factors that do influence oxyhemoglobin dissociation, such as pH, temperature, PCO2, and BPG levels, play crucial roles in maintaining the appropriate oxygen delivery to tissues throughout the body.
To know more about oxyhemoglobin dissociation click here:
https://brainly.com/question/30766002
#SPJ11
Among the factors listed, erythrocyte count has no effect on the ability of oxyhemoglobin to release oxygen at the body's capillaries. Other factors such as body temperature, hormones, adrenaline, and pH levels can influence this dissociation.
Explanation:The process, where oxyhemoglobin is able to release oxygen at the body's capillaries, is influenced by several factors, including erythrocyte count, fever, epinephrine, thyroid hormone, and pH level. Among the listed factors, the count of erythrocytes (red blood cells) has no effect on the dissociation of oxyhemoglobin. The other factors such as fever (increased body temperature) or thyroid hormones, which impact metabolism and body temperature, can affect this dissociation process. Epinephrine, also known as adrenaline, affects heart rate and thus blood flow and can influence oxyhemoglobin dissociation too. Lastly, the blood pH level (lower, more acidic pH promotes oxygen dissociation) also influences dissociation due to the Bohr effect.
Learn more about Oxyhemoglobin Dissociation here:https://brainly.com/question/31765417
#SPJ11
a mixture of ethanoic (acetic) acid and ethanol (ethyl alcohol) is heated in the presence of concentrated sulfuric acid. the organic product formed is a) ch3cooc2h5 b) ch3coc2h5oh c) ch3coc2h5 d) c2h5ch3cooh
Answers
The organic product formed is (c) CH₃COC₂H₅.
When a mixture of ethanoic acid (CH₃COOH) and ethanol (C₂H₅OH) is heated in the presence of concentrated sulfuric acid, an esterification reaction occurs. In this reaction, the carboxylic acid (ethanoic acid) reacts with the alcohol (ethanol) to form an ester.
The reaction can be represented as follows:
CH₃COOH + C₂H₅OH → CH₃COC₂H₅ + H₂O
The product formed is ethyl acetate, which is represented by the formula CH₃COC₂H₅. This compound is an ester, formed by the condensation of the carboxylic acid and alcohol. It is commonly used as a solvent and flavoring agent.
Therefore, the correct answer is (c) CH₃COC₂H₅, representing the organic product formed in the esterification reaction between ethanoic acid and ethanol.
To learn more about organic products, here
https://brainly.com/question/30328741
#SPJ4
Your simulation involved 100 atoms and eight half-life cycles. For half-life cycles 9 and later, how many radioactive nuclei would you expect to be present?
Answers
Answer:
you would expect 0 radioactive nuclei to be present
Explanation:
got it right on the assignment
name the elements that are found in this chemical equation.
Ba₃N₂ + 6H₂O → 3Ba(OH)₂ + 2NH₃
Answers
Answer: Barium, Nitrogen, Hydrogen, and Oxygen
Explanation: Look at the element letter and find the corresponding element name
Ba- Barium
N-Nitrogen
H-Hydrogen
O-Oxygen
why is it important to know what things are made of
Answers
Answer:
Explanation:
Knowing what things are made of, especially in the case of a mixture whose constituents still retain there chemical properties, assists in knowing the beneficial and harmful effects of those things.
For a example, a body cream/lotion (a mixture) that contains hydroquinone will give an individual the idea that the body cream is a lightening cream; as hydroquinone is a depigmenting agent that reduces the production of melanin thereby leading to the lightening of the skin.
Another relevant example is the hand sanitizer that is recommended for use of cleaning of hands in order to rid the hands off of corona virus. The recommended hand sanitizer should be made of at least 60% ethanol for effective use (which dissolves the virus). Knowing the components of a sanitizer to be used against the virus will assist an individual at a store make informed decision about purchase.
A group of students built a ramp and rolled steel balls of different sizes down the ramp onto the floor. Then they measured how far each ball rolled from the bottom of the ramp. Ramp Experiment Results Mass of Steel Ball Distance Rolled 5.3 grams 1.2 meters 8.5 grams 2.0 meters 12.4 grams 3.1 meters 15.8 grams 3.9 meters Which statement correctly explains the differences in the distances that the balls rolled? Responses(1 )Friction increased as mass increased. Friction increased as mass increased.(2)Velocity increased as mass increased. Velocity increased as mass increased.(3 )Acceleration increased as mass increased. Acceleration increased as mass increased.(4) Kinetic energy increased as mass increased.
Answers
Velocity increased as mass grew is the proper explanation for the variations in the distances that the balls travelled.
What is the primary distinction between temperature and thermal energy?The average kinetic energy of the particles in a substance is measured by its temperature. A substance's thermal energy can be used to calculate the total kinetic energy of its constituent particles. With increased particle mobility, a substance's temperature and thermal energy rise.
What two elements influence the energy transfer rate?Energy is transmitted to the object once the work is accomplished, at which point it moves at a new, constant speed. Kinetic energy is a form of transferable energy that depends on the mass and speed attained.
To know more about mass grew visit:-
https://brainly.com/question/6992992
#SPJ1
determine the formula of the hydrated sulfate. the number of water molecules is usually a small whole number expressed as an integer before h2o in the formula. show calculations and use correct significant figures.
Answers
The formula of the hydrated sulfate for Epsom salt is MgSO₄.5H₂O. The number of water molecules in this hydrated sulfate formula is equal to 5.
A hydrate is a compound containing a specific mass of water in the form of H₂O. To determine the molecular formula of the hydrate,[anhydrous solid⋅xH₂O.
], moles of water per mole of anhydrous solid (x). Step of the hydrate formula :
determines the mass of water released from the compound. This is accomplished by subtracting the weight of the anhydrate from the weight of the hydrate. Converts the weight of water to moles. To do this, divide the mass of water by the molar mass of water to get the number of moles of water. Converts the mass of residual anhydrous into moles.Determines the molar ratio of water to anhydrous. Write formulas using molar ratios.Considering a 210.4 g sample of Epsom salt hydrate, heating MgSO₄.xH₂O. releases water, so the mass of the resulting anhydrate is 120.4 g. What is the molecular formula of this hydrated sulfate?
Determine the mass (in grams) of water leaving the compound.= 210.4 g MgSO₄.H₂O. - 120.4 g MgSO₄
= 90 g H2O.
Convert the weight of water to moles:= 90 g H₂O/ (18 g/mol H₂O) = 5 mol H₂O.
Convert the mass of the remaining anhydrous to moles:= 120.4 g MgSO₄ /(120.4 g/mol MgSO₄ ) = 1 mol MgSO₄.
Determine the molar ratio of water to anhydrous compound:= 5 mol H₂O /1 mol MgSO₄ = 5:1.
Since there are 5 moles of H₂O for every mole of MgSO₄, the molecular formula is MgSO₄.5H₂O. There are therefore 5 molecules of water in the formula of hydrated sulphate.
For more information about hydrate formula, visit :
https://brainly.com/question/27648214
#SPJ4
Complete question:
determine the formula of the hydrated sulfate for Epsom salt, MgSO₄ nH₂O, the number of water molecules is usually a small whole number expressed as an integer before h2o in the formula. show calculations and use correct significant figures.
Give reasons :
1. Ammonia is not collected through downward displacement of water.
2. Ammonia is collect by the downward displacement of air.
3. Carbon dioxide is used in fire extinguisher.
4. H₂SO₄ is not used in the preparation of CO₂.
5. The opening of hard glass test tube is slanted down during laboratory preparation of ammonia gas
6. Carbon dioxide doesn't support in burning but Mg burns in it.
- Help!! Plagiarised / Random answers will be reported! ~ Thanks in advance! :)
Answers
Ans 1:
Ammonia is not collected over water since it is highly soluble in water
Ans 2:
Ammonia gas is lighter than air and hence collected by the downward displacement of air.
Ans 3:
The carbon dioxide is very cold as it comes out of the extinguisher, so it cools the fuel as well.
Ans 4:
H₂SO₄ is not used in the preparation of carbon dioxide Because the calcium sulphate formed is insoluble in water. So, CO₂ will not form.
Ans 5:
The opening of hard glass test tube is slanted down during laboratory preparation of ammonia gas because Ammonia gas is not collected in the gas jar by upward displacement of air because it is lighter than air
Ans 6:
Magnesium is reactive enough to be combusted and oxidized in a reaction with carbon dioxide:
The magnesium strip burns brightly in the air, but continues to burn in the carbon dioxide environment
-TheUnkownScientist
Calculate the pH at the equivalence point in titrating 0.100 M
solution of HBr with 0.080 M NaOH:
Answers
The pH at the equivalence point in titrating 0.100 M solution of HBr with 0.080 M NaOH is 1.699.
What is pH?
pH is defined as the negative logarithm of H+ ion concentration. Hence the meaning of the name pH is justified as the power of hydrogen. Mathematical definition of pH is-
pH = -log [H+]
Given,
Concentration of HBr = 0.100 M
Concentration of NaOH = 0.080 M
HBr + NaOH → NaBr + H₂O
Hydrogen ions get neutralised by hydroxide ions and remaining H+ concentration is = 0.1 - 0.08 = 0.02M
pH = -log [0.02]
pH = 1.699
Therefore, the pH at the equivalence point in titrating 0.100 M
solution of HBr with 0.080 M NaOH is 1.699.
Learn more about pH, here:
https://brainly.com/question/15289741
#SPJ1
What's Heavier?
100 pounds of bricks?
100 pounds of Feathers?
(THINK WISELY)
Answers
They have same mass
Explanation:
If you think wisely 100 pounds and 100 pounds have the same weight so the answer is equal
Select all of the following that are components of nucleotides. a. nitrogen-containing base b. hydrocarbon tail attached to a polar head c. glycerol d. sugar e. phosphorus-containing groups
Answers
Answer:
A and E
Explanation:
with Adenine ,thymine , cytosine and guanine
Which is a piece of information communication using the sense
Answers
Answer: Encoded messages are sent to the receiver for decoding through a channel, or a sensory route on which a message travels. While communication can be sent and received using any sensory route (sight, smell, touch, taste, or sound), most communication occurs through visual (sight) and/or auditory (sound) channels.
Explanation:
Assignment-1: Separation of ingredients
from the mixture of Table Salt and Sand
with practically. And answer the following
questions.
1. Which method(s) are used in the above
process?
2. Describe the working method serially.
3. Explain the observation and decision on
this experiment.
4. What kinds of precautions have you
taken doing this experiment?
Answers
Answer:
1. The methods used for the separation were filtration and evaporation
Explanation:
The mixture of table salt and sand is first dissolved in distilled water. The salt is soluble in water but the sand is not. The solution is now filtered. The filtrate contains the salt solution while the residue is the sand. The filtrate is now evaporated to dryness to recover the table salt from solution.
From the experiment we can clearly see that table salt is highly soluble in water.
One precaution during the experiment is to ensure that the filter paper was placed correctly before filtration started.
Question 2 options: The Galápagos tortoises are native to seven of the Galápagos Islands, a volcanic archipelago about 620 miles west of the Ecuadorian mainland. With lifespans in the wild of over ____________years, it is one of the longest-lived vertebrates. A captive individual lived at least ______________years!
Answers
Answers:
in the wild of over 100 years,...
A captive individual lived at least 255 years!
Explanation:
The giant Galapagos tortoises (Chelonoidis nigra) are famous because this species was observed by Darwin during his travel. This species is native from the Galapagos Islands and currently is in danger of extinction. Galapagos tortoises are recognized as one of the longest vertebrates. In this regard, it is worthy to note that a giant tortoise named Harriet lived 255 years, this specimen was in the Australian Zoo.
A 50.0 mL quantity of a 0.20 M solution of one of the following weak bases is titrated with 0.050 M HCl. At the equivalence point, the pH is 2.99. Identify the weak base. a. ethylamine (k_b = 5.6 Times 10^-4) b. methylamine (k_b = 4.4 Times 10^-4) c. ammonia (k_b = 1.8 Times 10^-5) d. pyridine (k_b = 1.7 Times 10^-9) e. aniline (k_b = 3.8 Times 10^-10) f. urea (k_b = 1.5 Times 10^-14)
Answers
The value of Kb for aniline is 3.98 x 10⁻¹⁰. So the correct option is E.
At the equivalence point :
No. of moles of acid = No. of moles of base
Molarity (M1) x Volume (V1) for acid = Molarity (M2) x Volume (V2) for base.
Given, V2 = 50.0 mL,
M2= 0.20 M,
M1 = 0.05 M
V1 = M2xV2/M1
V1 = 50.0 mL x 0.20 M / 0.05 M
V1 = 200 mL
Now,
pOH = 1/2 [ pKw + pKb + log C]
14 - pH = 1/2 [ pKw + pKb + log C]
11.01 = 1/2 [ 14 + pKb + log 0.010 mol / 0.250 L ]
As, no. of moles = 0.050 L x 0.2 M = 0.010 mol and Total volume = 250 mL = 0.250 L
22.02 = 14 + pKb + log 0.04
8.01 = pKb - 1.398
pKb = 8.01 + 1.398
pKb = 9.4
Kb = 10-pKb
Kb = 10-9.4
Kb = 3.98 x 10⁻¹⁰ (for aniline).
To learn more about aniline, refer to the link:
https://brainly.com/question/32043569
#SPJ12
Is hydrogen formed as a product?
Answers
Answer:
Hydrogen may be used in fuel cells for local electricity generation or potentially as a transportation fuel. Hydrogen is produced as a by-product of industrial chlorine production by electrolysis.
Carry out electrolysis of dilute CuSO4 using copper electrodes. State the products formed at the electrodes and nature of the electrolyte
Answers
A sphere of radius 0.457 m, temperature 32.2 ∘
C, and emissivity 0.924 is located in an environment of temperature 82.9 ∘
C. At what rate does the sphere (a) emit and (b) absorb thermal radiation? (c) What is the sphere's net rate of energy exchange? (a) Number (b) Number Units Units
Answers
a) The sphere emits thermal radiation at a rate of 139.75 Watts.
b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.
c) The sphere's net rate of energy exchange is 102.09 Watts.
What are the rates of thermal radiation emission, absorption, and net energy exchange for the sphere?To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.
a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:
Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))
Plugging in the given values:
Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)
Emitting Rate ≈ 139.75 Watts
b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:
Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))
Plugging in the given values:
Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)
Absorbing Rate ≈ 37.66 Watts
c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:
Net Rate = Emitting Rate - Absorbing Rate
Net Rate = 139.75 Watts - 37.66 Watts
Net Rate ≈ 102.09 Watts
Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.
Note: The units for all the rates are Watts.
Learn more about thermal radiation emission
brainly.com/question/28517392
#SPJ11
01.02 Types of Forces hellllpppp i give brainly
Answers
Hi im not sure but there you go . hope its helpful and good luck:)
Help please!!! Its chemistry last unit
Answers
Answer:
Number 4 is the answer
Explanation:
I hope it will help you
What experimental criterion is to be used to measure the rates of bromination of the hydrocarbons used in this experiment?
1.Precipitation
2.Gas evolution
3.Color change
4.Temperature change
Answers
The experimental criterion is to be used to measure the rates of bromination of the hydrocarbons in this experiment is "color change". Option 3 is correct.
Bromination of hydrocarbons involves adding bromine to the hydrocarbon, which results in a color change. Bromine is a reddish-brown liquid, and when it reacts with a hydrocarbon, the color of the mixture fades as the bromine is consumed. The rate of bromination can be determined by measuring the color change over time.
In this experiment, the hydrocarbons can be mixed with a solution of bromine in an organic solvent such as chloroform, and the reaction can be monitored by measuring the color change using a spectrophotometer or by visual observation. The rate of reaction can be determined by measuring the time taken for the color to fade, or by measuring the decrease in absorbance of the bromine solution over time.
To know more about bromination here
https://brainly.com/question/28938775
#SPJ4
Help me pls!
What is heliuim?
Answers
Answer:
it's a chemical Element
Explanation:
symbol He
atomic number 2.
Consider the following standard reduction potentials in acid solution:
E�(V)
Al3+ + 3e� ? Al(s) �1.66
AgBr(s) + e� ? Ag(s) + Br� +0.07
Sn4+ + 2e� ? Sn2+ +0.14
Fe3+ + e� ? Fe2+ +0.77
The strongest oxidizing agent among those shown above is:
1)Fe3+
2) Fe2+
3) Br-
4)Al3+
5) Al
Answers
The strongest oxidizing agent among the options provided is Fe3+ (option 1).
The strongest oxidizing agent is the one with the highest reduction potential. In this case, that is Fe3+ with a reduction potential of +0.77 V. This means that Fe3+ is most likely to gain electrons and be reduced, while the other species are more likely to oxidize other species. Therefore, the answer is 1) Fe3+.
The strongest oxidizing agent is the species with the highest reduction potential, as it has the greatest tendency to gain electrons and undergo reduction. From the given standard reduction potentials, Fe3+ has the highest value of +0.77 V. Therefore, the strongest oxidizing agent among the options provided is Fe3+ (option 1).
To know about oxidizing :
https://brainly.com/question/13182308
#SPJ11
Which of the substances have a standard enthalpy of formation (NHf) equal to zero?a. C (diamond).b. F2(g).c. NH3(g)d. Hg (l).
Answers
From the given list of compounds, \(F_2\)(g) and Hg(l) are at their standard state and therefore have a standard enthalpy of formation equal to zero.
The enthalpy change required to produce one mole of a compound from an element in its standard state is known as the standard enthalpy of formation. The standard states represent the shape an element would take at 1 bar of pressure and 25 °C. Since the energy would be different for the ridiculous reaction carried out with the diamond form of carbon, carbon is designated as graphite. Under normal circumstances, hydrogen exists as a molecular gas, thus this form is necessary for the typical reaction.
Learn more about standard enthalpy
brainly.com/question/29556033
#SPJ4
Compared to the atom of calcium -40, an atom of potassium - 39 contains fewer ______,
Answers
Protons (the number on the right of calcium-40 represents number of protons). The tiniest component of ordinary matter, an atom, makes up a chemical element.
Neutral or ionized atoms make up every solid, liquid, gas, and plasma. Atoms typically have a diameter of 100 picometers or less. Due to quantum effects, they are so small atoms that it is impossible to precisely anticipate their behavioral using traditional physics, as if they were tennis balls, for example.
The positively charged particles called protons are found in the hydrogen atom's nucleus. Protons, electrons, and neutrons are the building blocks of an atom. An atom's nucleus, which is located in the middle, contains all of its mass.
Learn more about protons here
https://brainly.com/question/1252435
#SPJ4