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The given chemical reaction is :
Calcium Oxide (s) + Water (l) → Calcium Hydroxide (s)
Molecular Changes : A chemical reaction is one in which the replying substances experience changes at the molecular position. This means that bonds between tittles of the reactants are broken, and tittles are changed or rearranged to produce commodity new. Chemical reaction can be reversible or unrecoverable.
What happens when frying an egg ?
Frying an egg is a chemical response. It's an illustration of an endothermic response or bone that takes in heat to make the response do. An egg is made up of proteins and water, and the thralldom also contains fat. When an egg is hotted , the proteins begin to change their structure. Protein motes are veritably complex, made up of long chains of structure blocks called amino acids. These chains are also folded and twisted to make complicated molecular structures. Hotting the egg adds energy, which causes the motes to begin to move and lose their shape. Bonds holding the shape of the protein motes together begin to break, unfolding the proteins and allowing them to spread out. New bonds are formed, and water evaporates out of the egg, changing it into a semi-solid. The egg has experienced anon-reversible chemical response, as it can not be changed back into its raw state.
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Related Questions
ph-dependent; a small change in ph produces a large change in the rate of the process. this is true not only for the many reactions in which the ion is a direct participant, but also for those reactions in which there is no apparent role for ions. the enzymes that catalyze cellular reactions, and many of the molecules on which they act, contain ionizable groups with characteristic values. the protonated amino and carboxyl groups of amino acids and the phosphate groups of nucleotides, for example, function as weak acids; their ionic state is determined by the ph of the surrounding medium.
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when the ph of the medium changes, the ionization state of the active groups of the enzyme and its substrate also change, thus altering the rate of the reaction.
What is reaction?A response is an action that is made in response to an event. It can be physical, mental, or emotional in nature, and can range from positive to negative. Reaction can be used to express feelings such as joy, surprise, anger, disappointment, and even fear. It is most commonly seen in social situations, where people respond to one another and the environment around them. Reactions can also be seen in animals and other organisms, as they respond to their environment in order to survive. Reactions can help us to understand ourselves and the world around us, and can help us to make decisions and take actions.
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How do specialized brown fat cells take advantage of oxidative phosphorylation to generate heat?.
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Specialized brown fat cells take advantage of oxidative phosphorylation to generate heat as they contain a carrier protein that dissipates the proton gradient across the inner mitochondrial membrane.
oxidative phosphorylation is when in mitochondrion the proton gradient does is the production of ATP from ADP. This depends on the oxidative reaction happening in the mitochondria. During oxidative phosphorylation electrons from NADH and FADH₂ combine with oxygen and then releases the energy from the oxidation or reduction reaction that is used to synthesis of ATP from ADP
Thus, Specialized brown fat cells take advantage of oxidative phosphorylation to generate heat as they contain a carrier protein that dissipates the proton gradient across the inner mitochondrial membrane.
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The work of which scientist was most essential to the use of radioactive
isotopes in medicine?
A. Antoine-Laurent Lavoisier
B. Robert Boyle
C. Marie Curie
D. John Dalton
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Answer:
A
Antoine-Laurent Lavoisier
:D
The scientist was most essential to the use of radioactive isotopes in medicine is " John Lawrence's".
What is radioactive isotopes?The radioactive isotopes of such an element were called radioisotopes. Atoms that have too much energy in their nucleus or even an unstable neutron-proton pair.
It marked the beginning of John Lawrence's lengthy career of service and the first time a radioactive isotope had already been employed in the management of a human illness. His laboratory is regarded as the origin of nuclear medicine, for which he is regarded as its father.
The scientist most essential to the use of radioactive isotopes in medicine is " John Lawrence's".
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What did the Copernicus revolution demonstrate?
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Thinking about valence electrons, which groups would go best together? Name 2 sets
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Valence electrons are the electrons present in the outermost shell s and p, or outermost energy level, of an atom.
valence electrons in each group are:-
Groups 3-12 (transition metals)= 2* (Here 4s shell is complete and it cannot hold any more electrons).
Valence electrons determine the electrical conductivity of an element. Depending on the nature of elements it can be metal, non-metal, or metalloid.
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How are different elements distinguishable from one another? (Check all that apply.)
Each has a unique chemical symbol.
Each is made of the same substance.
Each has a unique atomic number.
Each has a characteristic placement within the Periodic Table.
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Which statement about entropy is correct? - Entropy is sometimes described as the degree of randomness in a system. - solids are the state of matter with the most entropy. - entropy is a force of nature like gravity. - warm molecules have less entropy then cold molecules.
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Answer: Entropy is sometimes described as the degree of randomness in a system.
FILL IN THE BLANK. the measure of energy used in electrochemistry is the cell ___ (ecell), which is the difference in electrical potential between two electrodes. a common term for this difference in electrical potential is voltage force or emf.
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Answer:
Explanation:
The measure of energy used in electrochemistry is the cell potential (ecell), which is the difference in electrical potential between two electrodes. A common term for this difference in electrical potential is voltage or emf.
1.write the balanced equation for
CuCl2+HNO3+AgNO3=
What is the general molecular formula for phenol?
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1
1
The general molecular formula for phenol is C6H5OH. It is an aromatic organic compound with a hydroxyl group bonded to a carbon atom of a cyclic structure. The ring structure has alternate double and single bonds. The formula of phenol is C6H5OH. Benzene has the formula C6H6. It is a hexagonal ring of six carbon atoms bonded with alternate single and double bonds. Each carbon atom in benzene has a bond with a hydrogen atom. In phenol, a hydroxyl group replaces one of the hydrogen atoms.
The reaction of CuCl2, HNO3, and AgNO3 is a redox reaction. In a redox reaction, one substance loses electrons and is oxidized, while another substance gains electrons and is reduced. In this reaction, CuCl2 is oxidized to Cu2+, HNO3 is reduced to NO, and AgNO3 is reduced to Ag.
The balanced equation for the reaction is:
CuCl2 + 2HNO3 + 2AgNO3 → Cu2+ + 2NO + 2AgCl
The products of the reaction are copper(II) ions, nitrogen monoxide gas, and silver chloride precipitate.
Here are some of the properties of phenol:
Phenol is a white crystalline solid that is soluble in water.
Phenol has a strong, characteristic odor.
Phenol is a mild acid.
Phenol is toxic and can cause burns to the skin and eyes.
Phenol is used in a variety of products, including disinfectants, antiseptics, and plastics.
How to find total mass of water in final solution
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Answer:
Explanation:
Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v. The density of water is 1 gram per cubic centimeter.
write the structural formula for 2-bromo-3-chloro-4,4-dimethylpentanal
Answers
Answer:
Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO
Explanation:
The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.
The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.
The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.
The methyl groups are non-polar and do not have any significant reactivity.
The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.
The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.
Show how the cations and anions would swap in a double displacement reaction between AgNO3 and BaCl2. Write an (s) next to any solid that forms as a precipitate.
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Answer: AgCl + Ba(NO3)2 are the products is the Answer!!!!
Explanation:
The chemical equation of the reaction between silver nitrate and barium chloride is AgNO₃ + BaCl₂\(\rightarrow\)AgCl + Ba(NO₃)₂.
What is chemical equation?A Chemical equation is defined a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are written on the right hand side.
A plus sign is present in between reactants and products if there are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas to balance the equation .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can also be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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What is likely to happen to the population of thrushes the population of voles decreases?
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Answer:
I think it will decrease
the descriptions pertain to either prokaryotic or eukaryotic transcription. match each description to the appropriate category.
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Prokaryotic transcription happens in the cytoplasm, where Eukaryotic transcription happens inside the nucleus. Proteins referred to as transcriptional factors are required for eukaryotic transcription but not for prokaryotic transcription.
What distinctions between prokaryotic and eukaryotic transcription quizlet exist?Eukaryotic cells carry out transcription in the nucleus and translation in the cytoplasm. Translation starts while the mRNA is still being created in a prokaryotic cell because transcription and translation are linked together during this process.
How does transcription in prokaryotes work?Prokaryotic transcription is the process by which the genetic material in prokaryotes is converted into messenger RNA transcripts, which are then translated to make proteins.
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Activity 4: Crystallization Materials: Glass rod, crystallization (trough) pan, copper sulfate, distilled water, beaker(250mL). Procedure: In a beaker containing 100 mL distilled water, carefully add copper sulfate crystals and stir with the glass rod in order to dissolve the maximum amount of copper sulfate crystals. - Pour the contents of the beaker into a crystallization trough and allow the solution to stand until there is complete evaporation of the water. Analysis: a- What do you observe at the bottom of the trough? b- What are some benefits of crystallization? Figure 2
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a- At the bottom of the trough, you will observe crystal formation of copper sulfate as the water evaporates. The crystals will continue to grow until there is no more water left to evaporate.
b- Crystallization has several benefits in various fields. In the chemical industry, it is used to purify substances by removing impurities and separating mixtures. In pharmaceuticals, it is used to purify drugs and create more effective and stable formulations. In metallurgy, it is used to extract pure metals from ores. Crystallization can also be used in the food industry to create high-quality products such as chocolates and candies with a smooth texture and uniform appearance.
Overall, crystallization is a useful technique for obtaining pure substances and for creating well-defined crystals with desirable properties. It allows for the separation and purification of mixtures and can lead to the production of higher quality products in various industries.
What is the final temperature of a system if 18.00 g of gold at 90.0°C is placed in 18.00 g of water at 26.00°C? The molar heat capacity of gold is 25.41
J/(mol • °C) and the heat capacity of water is 4.18 J/g. °C).
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Given,
Molar heat capacity of gold is 25.41 J/(mol • °C)
Heat capacity of water is: 4.18 J/g. °C)
use the capacities to calculate the resultant temperature of the system using the mass of 18 grams of gold alongside 18 grams of water.
Hope This Helped!
What differences between snow and sand
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Answer:
difference is the temperature at which they melt. Snow melts at 0°C, whereas sand melts at about 1600°C! The temperature at which something melts is its melting point.list 5 of the signs that can identify the evidence of a chemical change.
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Answer:
here are some ideas <3
Explanation:
burning of paper.
cooking of food
burning of wood
rotting of fruits.
frying egg
rusting of iron
mixing acid and base.
burning of candle
leaves changing color
melting of sugar.
baking
explosion of fireworks.
souring milk
digestion of food
fermentation
lighting matchstick
photosynthesis
decomposition of waste
2. The reaction of a triglyceride with methanol in the presence of a strong base to form
methyl esters and glycerol is called
O A. transesterification.
O B. saponification.
O C. ester formation.
O D. dehydration condensation.
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Answer:
The answer it's A. transesterification
which is the graph of the function g(x) = f(-x)
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To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.
What is a graph of the function g(x) = f(-x)?To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.
If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).
However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.
In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.
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To standardize a potassium permanganate solution, a 0.250 g sample of FAS (iron (II) ammonium sulfate hexahydrate; molar mass: 342 g) is dissolved in 25.00 mL distilled water, then acidified with sulfuric acid. The solution is then titrated with 35.00 mL potassium permanganate solution from a burette until a pale persistent purple color is attained. Calculate the molarity of the potassium permanganate solution.
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Define or give an example for each of the following terms.
a. hydrocarbon
b. alkyne
c. alkane
d. alkene
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a) A combound which contains only Carbon and Hydrogen. There are covalent bonds between atoms. Hydrogen form one single bond and Carbon forms four covalent bonds. Carbon bonds can be single, double or triple bonds.
All hydrocarbons are organic compounds, but organic compound can include atoms of other elements.
b) Alkyne has a covalent triple bond between two carbon atoms. Simplest alkyne is ethyne HCCH.
b) Alkane contains only Carbon and Hydrogen and there are single bonds
between atoms. Simplest alkane is methane CH4.
c) An alkene has one double bond between Carbon atoms. Simplest
alkene is ethene H2C=CH2.
What is the primary reason that atomic radius decreases as you move from left to right across the periodic table even through the number of electrons is increasing?
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Answer:
As you move across a period the electrons are being added to the same shell. But, protons are being added as well. This makes the nucleus more positively charged and, increasing protons has a greater effect than electrons. So, there is a greater nuclear attraction and, because the electrons are being added to the same shell that shell gets pulled in more. This causes a decrease in atomic radius.
Explanation:
The primary reason that atomic radius decreases as you move from left to right across the periodic table is; Due to the increase in electrostatic attraction between the positively charged nucleus and the negatively charged electrons.
The number of shells in elements located in the same period are equal.
However, with successive increase in the atomic number, the number of electrons and protons increases.
Consequently, the electrostatic attraction between the positively charged nucleus and negatively charged electrons increases and the radius reduces accordingly.
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Which characteristic of rocks does
radioactive decay measure?
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Explanation:
Because radioactive isotopes decay at a constant rate, they can be used like clocks to measure the age of the material that contains them. In this process, called radiometric dating, scientists measure the amount of parent isotope and daughter isotope in a sample of the material they want to date.
Answer:
Because radioactive isotopes decay at a constant rate, they can be used like clocks to measure the age of the material that contains them. In this process, called radiometric dating, scientists measure the amount of parent isotope and daughter isotope in a sample of the material they want to date.
Explanation:
Formation of crystals of sugar from a sugary syrup is a …….
chemical change.
Answers
Answer:
im pretty sure thats physical
Explanation:
The acid ionization constant, Ka, for propanoic acid, C2H5COOH, is 1.3x10-5.(a) Calculate the hydrogen ion concentration, [H+], in a 0.20-molar solution of propanoic acid.(b) Calculate the percentage of propanoic acid molecules that are ionized in the solution in (a).(c) What is the ratio of the concentration of propanoate ion, C2H5COO-, to that of propanoic acid in a buffer solution with a pH of 5.20?(d) In a 100.-milliliter sample of a different buffer solution, the propanoic acid concentration is0.35-molar and the sodium propanoate concentration is 0.50-molar. To this buffer solution,0.0040 mole of solid NaOH is added. Calculate the pH of the resulting solution
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(a) The hydrogen ion concentration in the solution is [H+] = 1.14x10^-3 M. (b) 0.57%. (c) The ratio of the concentration of propanoate ion to that of propanoic acid in the buffer solution is 2.68.
(a) The balanced equation for the ionization of propanoic acid is:
C2H5COOH + H2O ⇌ C2H5COO- + H3O+
The equilibrium expression for this reaction is:
Ka = [C2H5COO-][H3O+] / [C2H5COOH]
At equilibrium, the concentration of propanoic acid that has ionized to form propanoate ion and hydronium ion is equal to the concentration of propanoic acid that has not ionized, so we can assume that [C2H5COO-] ≈ [H3O+]. Let x be the concentration of hydronium ion in the solution. Then the equilibrium expression becomes:
Ka = x^2 / (0.20 - x)
Solving for x, we get:
x = sqrt(Ka * (0.20 - x)) = sqrt(1.3x10^-5 * 0.20) = 1.14x10^-3 M
Therefore, the hydrogen ion concentration in the solution is [H+] = 1.14x10^-3 M.
(b) The percentage of propanoic acid molecules that are ionized in the solution is given by:
% ionization = [H3O+] / [C2H5COOH] x 100%
% ionization = (1.14x10^-3 / 0.20) x 100% = 0.57%
(c) The pH of a buffer solution can be calculated using the Henderson-Hasselbalch equation:
pH = pKa + log([C2H5COO-] / [C2H5COOH])
At pH 5.20, the hydronium ion concentration is 10^-5.20
= 6.31x10^-6 M.
Using the equilibrium expression for propanoic acid and the fact that [C2H5COO-] + [C2H5COOH] = total buffer concentration,
we can solve for the ratio of the concentrations of propanoate ion to propanoic acid:
Ka = [C2H5COO-][H3O+] / [C2H5COOH]
[C2H5COO-] = Ka[C2H5COOH] / [H3O+]
[C2H5COO-] = (1.3x10^-5)([C2H5COOH]) / (6.31x10^-6)
[C2H5COO-] / [C2H5COOH]
= 2.68
Therefore, the ratio of the concentration of propanoate ion to that of propanoic acid in the buffer solution is 2.68.
(d) When solid NaOH is added to the buffer solution, it reacts with the propanoic acid to form propanoate ion and water:
C2H5COOH + NaOH → C2H5COO- + H2O + Na+
The number of moles of propanoic acid that react with NaOH is equal to the number of moles of NaOH that were added. The new concentration of propanoic acid is:
0.35 M - (0.0040 mol / 0.100 L) = 0.346 M
The new concentration of propanoate ion is:
0.50 M + (0.0040 mol / 0.100 L) = 0.54 M
The new concentration of hydronium ion can be calculated using the equilibrium expression.
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which of the following reactions would not result in a 50/50 mixture of stereoisomeric products? reaction b neither reaction a nor b both reaction a and b reaction a
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Reaction B will not lead to formation of 50/50 mixture of stereoisomers products.So,correct option is a.
In stereochemistry, stereoisomerism, or spatial isomerism, is a type of isomerism wherein particles have similar sub-atomic equation and succession of fortified iotas (constitution), however vary in the three-layered directions of their molecules in space.[1][2] This differences with underlying isomers, what share a similar sub-atomic recipe, yet the bond associations or their request contrasts. By definition, particles that are stereoisomers of one another address the equivalent primary isomer.
In reaction b compound is existing in original form,due to which for stability it transfers electrons from central atom to top most atom of compound which is not possible in first reaction compound.Due to that reaction A will lead to 100% mixture.
Hence,correct option is a.
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(Complete question) is:
which of the following reactions would not result in a 50/50 mixture of stereoisomeric products?
a)reaction b
b)neither reaction a nor b
c) both reaction a and b
d)reaction a
Which option correctly describes where most of a cells cellular respiration occurs?
1. the cytoplasm
2. mitochondria
3. the nucleus
4. chloroplasts
Answers
Answer:
I think it's 3 or 4 I'm not sure
Answer:
2.mitochondria
Explanation:
Since it provide ATP or oxygen it is the site we where cellular respiration which needs oxygen in other to break down complex food to release energy.
what’s is the answer?
Answers
The energy of the photon of light can be obtained as 6.27 * 10^-20 J.
What is the energy of the photon?We know that a photon has to to do with a particular unit of light. We know that light can be said to be composed of very tiny corpuscles and these corpuscles of light is what we call the photon of the light.
We can be able to us the equation that is derived by Max Plank to be able to get the value of the energy of the photon of light. Now we know that a photon of light can have an energy that is able to be obtained by;
E = hf
h = Plank's constant
f = Frequency
Then;
E = 6.6 * 10^-34 Js * 9.5 * 10^13 Hz
= 6.27 * 10^-20 J
Thus as we can see from the parameters in the question, the energy of the photon is 6.27 * 10^-20 J.
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Which nuclear equation represents a spontaneous decay?
Answers
Answer:A
Explanation:
1. \(^{222}Rn_{86}\) → \(^{218}Po_{84} + ^{4}He_{2}\)
What is a spontaneous decay?
Spontaneous fission (SF) is a form of radioactive decay where an atom's nucleus splits into two smaller nuclei and generally one or more neutrons.Out of the given options, only option 1. \(^{222}Rn_{86}\) → \(^{218}Po_{84} + ^{4}He_{2}\) is an example of spontaneous decay since an atom nucleus is splitting into two daughter nuclei's.Spontaneous decay would refer to whether or not decay was stimulated by bombardment with neutrons or alphas while random decay refers to the selection of which nuclei actually decayLearn more:
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