Acetyl-co A containing radioactively labeled carbon atoms when fed to cells produce Co2 which are not radioactive but molecules of citrate and oxalo acetate are radioactive because citrate and oxalo acetate are part of the Krebs Cycle, which is responsible for generating energy in cells.
The Krebs Cycle involves a series of reactions in which acetyl-co A is broken down to generate energy. The carbon atoms in acetyl-co A are gradually transferred to other molecules in the cycle, including citrate and oxalo acetate. As the carbon atoms are transferred, they become radioactive. Eventually, the carbon atoms are transferred to Co2, which is then released from the cells.
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A certain atom contains 53 protons, 78 neutrons, and 54 electrons. What is the mass number of this atom?.
The mass number of this atom having 53 protons, 78 neutrons, and 54 electrons will be 131.
In the field of science, we can describe a mass number of an atom as simply a measure of the protons and neutrons that are to be found in the nucleus of an atom. In chemistry, the mass number is denoted by the letter 'A'.
In the above-mentioned case, the number of protons of the atom is 53 whereas the number of neutrons is 78.
In order to calculate the mass number, we will add the number of protons and neutrons. As the result of the addition of 53+78 is 131 hence, the mass number will be 131.
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help pleasee! will
give brainliest +80 pts
The name of the compounds of nonmetallic elements are:
GeH₄ - germanium tetrahydrideN₂Br₄ - dinitrogen tetrabromideP₂S₅ - phosphorus (v) sulfideSeO₂ - selenium (iv) oxideNH3 - ammoniaSiO₂ - silicon (iv) oxideThe formula of the binary compounds of nonmetallic elements are:
phosphorus triiodide - PI₃silicon tetrachloride - SiCl₄dinitrogen pentoxide - N₂O₅dinitrogen tetroxide - N₂O₄carbon monoxide - COThe formula of the compounds of nonmetallic elements are:
carbon dioxide - CO₂sulfur hexafluoride - SF₆dinitrogen tetrachloride - N₂Cl₄carbon tetraiodide - CI₄phosphorus pentafluoride - PF₅diphosphorus pentoxide - P₂O₅What are the formulas of compounds?The formula of compounds are formulas that are used to represent the compound.
The formula of compounds uses the symbols of the elements present in the compound to represent the compound.
The moles of atoms of each element present in the compound is written in subscripts in the formula of the compound.
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which of the following will increase the rate of a chemical reaction? increase the temperature at which the reaction occurs. allow the reaction to proceed for a longer time. decrease the concentrations of the reactants. decrease the amount of time in which the reaction is allowed to occur. decrease the temperature at which the reaction occurs.
Option C is correct. reduce reactant concentrations. shorten the time the reaction is allowed to proceed.
The reaction rate normally increases as the temperature rises. With rising temperature, the average kinetic energy of the reactant molecules rises. The minimum energy needed for an effective collision will therefore be present in a higher percentage of molecules. With rising temperatures, molecules' kinetic energy rises. The possibility of a reaction rises as molecules move more quickly and collide more frequently. This speeds up the reaction. The average kinetic energy of the individual particles of the system increases with increasing temperature. Particles move faster and collide more often per unit time as the average kinetic energy increases, and they have more energy when they collide. Both of these factors speed up the reaction.
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suppose you analyze a 32.4 g sample of bleach and determine that there are 3.06 g of sodium hypochlorite present. what is the percent of sodium hypochlorite in the bleach sample? type answer:
The percent of sodium hypochlorite in the bleach sample is calculated to be 9.44% if 3.06 g of sodium hypochlorite is present.
Percentage can be calculated by dividing a value by the total value and then multiplying the resultant by 100.
In this case, we can determine the percentage of sodium hypochlorite in the bleach sample by dividing the mass of sodium hypochlorite by the total mass of the sample and then multiplying the resultant by 100 as follows;
percent of sodium hypochlorite = (mass of sodium hypochlorite/mass of sample) × 100
As 3.06 g of sodium hypochlorite is present in 32.4 g of the sample of bleach, substituting these values in the equation as follows;
percent of sodium hypochlorite = (3.06 ÷ 32.4) × 100
percent of sodium hypochlorite = 0.0944 × 100
percent of sodium hypochlorite = 9.44%
Therefore the percentage of sodium hypochlorite in the bleach sample is calculated to be 9.44%.
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substances like xenon , which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. at a pressure of , does not condense to a liquid until and does not freeze until . what are the equivalent absolute temperatures? to condense: k
The equivalent absolute temperature when it condenses will be 27.25K. and freezes at 24.65K.
To find equivalent absolute temperatures we have to use the following equation:
0°C + 273.15 = 273.15K
The main idea is to convert degree Celsius to Kelvin.
In this manner, we are going make utilize of the over condition and space within the values for at degree Celsius at which it condenses and at degree Celsius at which it solidifies.
So, the temperature at which it condenses:
-245.9°C + 273.15 = 27.25K.
Also, the temperature at which it freezes.
-248.5°C + 273.15 = 24.65K.
Absolute temperature is utilized in the application of the perfect gas law and numerous other laws of thermodynamics.
A scale for outright temperature with degree units the same as on the Celsius scale is known as the Kelvin scale; the temperature scale utilizing Fahrenheit degree units is the Rankine scale.
Appropriately, a temperature distinction of one degree on the Celsius scale compares to a temperature contrast of one degree on the Kelvin scale; additionally for the Fahrenheit and Rankine scales.
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Although part of your question is missing, you might be referring to this full question:
Substances like neon, which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. At a pressure of 1 atm, Ne does not condense to a liquid until -245.9°C and does not freeze until -248.5°C. What are the equivalent absolute temperatures?
To condense: __K
To freeze: __ K
which is the correct answer
Answer C I think
Explanation:
thomas edison invented the light bulb only because he experimented with thousands of different kinds of materials for a filament before he found one that worked (carbon). this shows that at the most basic level, we can solve problems through
we can solve problems through trial and error
American businessman and inventor Thomas Alva Edison. He created several innovations in the production of electric power, mass communication, sound recording, and motion pictures. Thomas Alva Edison, one of history's most well-known and prolific innovators, made significant contributions to contemporary living by creating the phonograph, motion picture camera, incandescent light bulb, and telephone as well as enhancing the telegraph and telephony. The light bulb was created by Thomas Edison, who is best recognized for this invention. Edison, a brilliant inventor, made a thousand fruitless efforts to create the light bulb. How does it feel to fail 1,000 times, a reporter asked? I didn't fail 1,000 times, Edison said in response.
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suppose, in an experiment to determine the amount of sodium hypochlorite in bleach, you titrated a 23.92 ml 23.92 ml sample of 0.0100 m k i o 3 0.0100 m kiox3 with a solution of n a 2 s 2 o 3 nax2sx2ox3 of unknown concentration. the endpoint was observed to occur at 13.80 ml 13.80 ml . how many moles of k i o 3 kiox3 were titrated?
The number of moles of k I o 3 kiox3 titrated is 2.392 x 10^-4 mol.
Concentration is the abundance of a constituent divided with the aid of the total quantity of a combination. Numerous sorts of mathematical descriptions may be prominent: mass concentration, molar concentration, number awareness, and volume awareness.
Concentration is a totally common idea used in chemistry and related fields. it is the measure of ways much of a given substance there is mixed with another substance.
Given : concentration of KIO3 = 0.0100 M
volume of KIO3 = 23.92 mL = 0.02392 L
moles of KIO3 titrated = (concentration of KIO3) * (volume of KIO3 in Liters)
moles of KIO3 titrated = (0.0100 M) * (0.02392 L)
moles of KIO3 titrated = 2.392 x 10^-4 mol
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avogadro's law states that under constant temperature and pressure, the volume of a gas is directly proportional to the number of moles of gas. what is the relationship consistent with this statement?
According to Avogadro`s law, the volume of gas is directly proportional to number of moles of gas.
This law mathematically can be written as:
V ∝ n
V = K n
V/n = K
Where V represents the volume of gas
n represents the number of moles of gas
k is proportionality constant at a given temperature and pressure
This law explains that how equal volumes of all gases contain the same number of molecules when the temperature and pressure are the same. Similarly, this law can be used to compare the same substances under two different sets of circumstances.
V₁ / n₁ = V₂ / n₂
This equation shows that the volume of the gas increases proportionally to the amount of number of moles of gas. Similarly, if the amount of gas decreases result in decrease in number of moles. As a result, neither the size of the molecules nor the molar mass of the gas affects how many atoms or molecules there are in a given volume of an ideal gas.
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A waste management specialist for a city is designing a recycling program to reduce the amount of synthetic materials that enter the local landfill. Which of the following criteria would be best for the specialist's design? A. to make it easy for the residents of the city to recycle synthetic materials B. to keep anything made of natural materials from entering the landfill C. to make residents travel a long distance to recycle synthetic materials D. to keep residents from using anything made of synthetic materials
Option A would be the right recycling program to reduce the number of synthetic materials that enter the local landfill. Hence option A would be the suitable criteria for the specialist's design.
Option A is correct because, with the providence of the knowledge to recycle synthetic materials, there will be less waste accumulation. Hence most synthetic materials can be expected to be recycled.
Option B is wrong because restricting natural materials from entering the field will further increase the use of synthetic materials. Hence there will be more accumulation of waste.
Option C is wrong because making the residents travel long distances will be tiresome, and the outcome of disposing of them will be little.
Option D is wrong because synthetic materials are valuable in various manufacturing and widely used in our daily lives. Hence we will lose the potential benefits.
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A certain oxygen atom has the electron configuration 1s22s22px22py2. How many unpaired electrons are present?.
There are no unpaired electrons present in this atom of oxygen.
The molecular orbital configuration of the oxygen atom given is,
1s²2s²2px²2py².
As we can see, there is not electron in the configuration which is alone in the orbital, they all are present in pairs. So, there are no unpaired electrons present.
This state of the oxygen atom when there are no unpaired electron are present, this could be the ground state of the atom.
The ground state of the atom is when the potential energy of the electrons of the atom is minimum.
In this configuration, no electron is unpaired, all the electrons are paired.
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The hydrochloric acid utilized in this experiment can often discolor gloves if it is spilled on them during use. If this does occur, what should be done in order to remedy this potentially hazardous situation?.
In order to remedy this potentially hazardous situation of Hydrochloric acid option b. put some sodium bicarbonate on the gloves so they can be neutralized.
Hydrochloric acid, additionally known as muriatic acid, is an aqueous answer of hydrogen chloride. it's far a drab answer with a distinctively smelly odor. it's far categorized as a robust acid. It is a part of gastric acid in the digestive structures of maximum animal species, which include human beings.
Hydrochloric acid (HCl) is generally used for the neutralization of alkaline marketers, as a bleaching agent, in the food, textile, metallic, and rubber industries. it's far neutralized if launched into the soil and it rapidly hydrolyzes while exposed to water.
Hydrochloric acid is a clean, toxic liquid. it is a caustic chemical and notably corrosive, which means it right away reasons severe damage to tissues, such as burning, on touch. this text discusses poisoning from swallowing or breathing in hydrochloric acid.
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Disclaimer:- your question is incomplete, please see below for the complete question.
The hydrochloric acid utilized in this experiment can often discolor gloves if it is spilled on them during use. If this does occur, what should be done in order to remedy this potentially hazardous situation?
a. Gloves are not needed in this experiment, this question is invalid.
b. put some sodium bicarbonate on the gloves so they can be neutralized.
c. Remove the glove and wash your hand prior to putting a new pair on.
d. wash the gloves off and continue to use them.
when aluminum, al , metal is dipped in an aqueous solution of hydrochloric acid, hcl , hydrogen gas, h2 , is produced with the formation of an aluminum chloride, alcl3 , solution. write the balanced chemical equation showing the phases of reactants and products. express your answer as a chemical equation including phases.
The balanced reaction equation for this transformation looks like this:
2Al(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂(g)
In order to write the balanced reaction equation for this redox reaction, we must first write what we know. Aluminum metal is solid (Al(s)), and it is reacting with aqueous hydrochloric acid (HCl(aq)). When elemental metals react with acids, this results in the formation of appropriate salts (in this case aluminum chloride, that will be dissolved in water, so AlCl₃(aq)) and elemental gaseous hydrogen (H₂(g)):
Al(s) + HCl(aq) → AlCl₃(aq) + H₂(g)
This reaction equation isn't balanced because we have different numbers of atoms for every element on the left and the right side (except for Al). The easiest way to begin balancing is to notice that chlorine atoms will be balanced if we add 3 in front of HCl:
Al(s) + 3HCl(aq) → AlCl₃(aq) + H₂(g)
However, we can see now that 3HCl cannot possibly produce the H₂ molecule. The smallest common multiple of 3 and 2 is 6, so we should have 6 hydrogen atoms on each side:
Al(s) + 6HCl(aq) → AlCl₃(aq) + 3H₂(g)
To balance the chlorine atoms we add 2 in front of AlCl₃, and then 2 in front of Al to balance aluminum, arriving at the balanced reaction equation:
2Al(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂(g)
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Does the outer core have convection currents?
Answer:
yes there R, The Earth’s outer core is in a state of turbulent convection
Explanation:
have good day
Answer:
Technically? Yes. Because the Earth's outer core is in a state of turbulent convection as the result of radioactive heating and chemical differentiation. This sets up a process that is a bit like a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy.
Explanation:
Brainlest, Please!
Given: sulfur, 3.04 g, 1.47 cm³
Wanted: density of sulfur in g/cm³?
Answer:
2.068
Explanation:
D = M/V
3.04 /1.47
= 2.068
waste water treatment often has at least one oxidation-reduction step. in the collection of waste water, chlorine can be added to control corrosion by hydrogen sulfide to give sulfur and chloride ions. what is the balanced equation for the reaction that occurs in this step? include physical states in your answer.
The balanced reaction equation for this redox reaction looks like this:
H₂S(aq) + Cl₂(g) → S(s) + 2HCl(aq)
First, we write what we know about the reaction:
Hydrogen sulfide (H₂S) that is dissolved in the wastewater (so the physical state is (aq)) is reacting with gaseous chlorine (so Cl₂(g)) to form sulfur (which is solid at room temperature, and does not dissolve in water, so S(g)) and chloride ions (Cl⁻). To counter their negative charge, we add the hydrogen from H₂S to chlorides, which results in HCl, which is soluble in water, so the physical state is (aq):
H₂S(aq) + Cl₂(g) → S(s) + HCl(aq)
When we look at this equation we can see that it is not balanced, because we have 2 H atoms and 2 Cl atoms on the left, and only 1 of both on the right. The easiest way to rectify this is to add "2" in front of HCl, resulting in a balanced reaction equation:
H₂S(aq) + Cl₂(g) → S(s) + 2HCl(aq)
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Metal and non-metal ions come together to form a giant structure. What is the name of this structure?
A. Ionic bond
B. Ionic lattice
C. Ionic molecule
Answer:
This arrangement is called a giant ionic lattice .
Forming ionic compounds -
Answer: It form ionic bond.
Explanation: It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Ionic bonds form only between metals and nonmetals. That's because metals “want” to give up electrons, and nonmetals “want” to gain electrons.
can someone please help me with this problem !!!!!!???????
After connecting the battery to the wire, the student brings a few pieces of iron near the iron nail. The statement which best describes what will happen to the iron pieces is that: B. The Iron nail behaves like a magnet that attracts the pieces of iron.
What is the law of magnetism?The law of magnetism states that the unlike (different) poles of a magnet would attract each other while like poles of a magnet would generally repel one another.
This ultimately implies that, two north (N) or south (S) poles of a magnet would repel one another while a north (N) and south (S) of a magnet would attract each other.
Based on the law of magnetism, we can reasonably infer and logically deduce that if this student should bring a few pieces of iron near the iron nail after connecting the battery to the wire, the iron nail would behave like a magnet by attracting the pieces of iron because they are oppositely charged.
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Complete Question:
After connecting the battery to the wire, the student brings a few pieces of iron near the iron nail. Which statement describes what will happen to the iron pieces?
answer choices
The battery behaves like a magnet that repels the pieces of iron.
The Iron nail behaves like a magnet that attracts the pieces of iron.
The iron nail produces electric current that attracts the pieces of iron.
The coil rotates which produces electric current that repels the pieces of iron.
Look at the diagram below. Which part, A-C, correctly shows the electronic structure of a sodium ion?
The correct diagram is C as it is the correct electronic configuration for Sodium ion
What is electronic configuration ?
The description of the positions of the electrons around a nucleus is called an electron configuration. As we previously discovered, every neutral atom contains an equal number of protons and electrons. Now, we'll arrange those electrons such that they stand around the nucleus in a way that shows their energy and the nature of the orbital in which they are housed.
Na ( Sodium )
Atomic Number - 11
Electronic Configuration : 2,8,1
Na+ ( Sodium ion)
Electronic Configuration : 2,8
The correct diagram is C as it is the correct electronic configuration for Sodium ion
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XY + Z→ XZ + Y is an example of a
XY + Z→ XZ + Y is an example of a substitution reaction. A substitution reaction involves the exchange of one atom for another.
Why is a substitution reaction?A substitution reaction involves the exchange of one atom for another. These are extremely useful reactions in the chemical industry because they allow chemists to transform one compound into something more useful, allowing them to construct designer molecules such as drugs.Substitution reactions are classified into two types: nucleophilic reactions and electrophilic reactions. The primary distinction between these two reactions is the type of atom that is attached to the original molecule.The combination of two or more atoms or molecules to form a large molecule is known as an addition reaction. A substitution reaction is one in which an atom or group of atoms is replaced by another atom or group of atoms.To learn more about substitution reaction, refer to:
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the concentration of magnesium inside a cell is 0.26%. the concentration of magnesium in the surrounding fluid is 0.18%. how could the cell obtain more magnesium?
The cell obtain more magnesium through Active transport.
What is Active transport?Active transport refers to the movement of molecules or ions across a cell membrane against the concentration gradient from a location of lower concentration to a region of higher concentration. Cellular energy is needed for active transport in order to achieve this movement. Adenosine triphosphate (ATP)-based primary active transport and electrochemical gradient-based secondary active transport are the two different forms of active transport.Active transportation uses include:
Bacterial phagocytosis by macrophages.Ca2+ ion expulsion from cardiac muscle cells.Amino acid movement via the intestinal epithelium in the human intestine.secretion of proteins from diverse cells, including enzymes, peptide hormones, and antibodies.White blood cell defense against invasive illnesses.Active transport employs cellular energy to move molecules against a gradient, polar repulsion, or other resistance, as opposed to passive transport, which relies on the kinetic energy and inherent entropy of molecules traveling down a gradientThe accumulation of large concentrations of substances that the cell requires, such as ions, glucose, and amino acids, is typically linked to active transport.To learn more about Active transport, refer to https://brainly.com/question/25802833
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you are going to measure the conductivity of the analyte beaker during a titration. initially, the beaker contains only aqueous mgcl2, which fully dissolves in water. generally, how many ions does each molecule of mgcl2 break into? group of answer choices
Each magnesium chloride (MgCl₂) molecule dissociates into 3 ions in total.
Magnesium chloride (MgCl₂) is a salt which means that, upon dissolving in water, it will dissociate, giving positively charged metal cations (here, magnesium ions) and negatively charged anions formed from nonmetals (here, chloride ions). The balanced reaction equation for magnesium chloride (MgCl₂) dissociation looks like this:
MgCl₂(aq) → Mg²⁺(aq) + 2Cl⁻(aq)
We can see that, upon dissociation, each molecule of magnesium chloride forms a single magnesium ion (Mg²⁺) and two chloride ions (Cl⁻). So, in total, 1 + 2 = 3 ions are formed from each unit of magnesium chloride.
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copper(ii) ions appear blue in aqueous solution. this is the transmitted color. the wavelengths of light that are not absorbed give rise to the perceived or transmitted color of a substance. based on the principle of complementary colors, which colors and wavelengths would you expect to be the most strongly absorbed by cu 2 ions?
Based on the Principle of Complementary Colors , the colors and wavelengths expected to be the most strongly absorbed by cu 2+ ions are :-
Orange : 600–640 nm
Blue : 450–480 nm
Violet :400–450 nm
Green : 450–560 nm
Red : 640–700 nm
Yellow : 560–600 nm
Complementary color are pairs of colors which, while blended or mixed, cancel every different out (lose hue) via generating a grayscale color like white or black. whilst located next to every other, they devise the most powerful contrast for those colours. Complementary colours may also be known as "opposite colorings".
The RGB coloration version, invented inside the 19th century and absolutely advanced inside the twentieth century, uses combos of pink, inexperienced, and blue mild towards a black heritage to make the colours visible on a computer monitor or television display. Within the RGB version, the primary colors are purple, green, and blue. The complementary number one–secondary combinations are crimson–cyan, inexperienced–magenta, and blue–yellow. Inside the RGB colour version, the mild of complementary shades, consisting of pink and cyan, combined at full depth, will make white mild, for the reason that complementary hues comprise mild with the whole variety of the spectrum. If the light isn't always completely severe, the resulting mild will be gray.
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what statements are always true about limiting reactants? select one or more: there will be an excess of other reactants at the end of the reaction. the limiting reactant is completely used up in the reaction. the limiting reactant is always the same for a given reaction. the limiting reactant dictates the amount of product. the limiting reactant has a lower mass than other reactants.
There will be an excess of other reactants at the end of the reaction are always true about limiting reactants.
Why do reactants have a limiting effect?The reagent (compound or element) that must be completely consumed in a chemical reaction is known as the limiting reactant. Because there is no more reactant, limiting reactant is also what stops a reaction from continuing.
Limiting factors in stoichiometry are the reagents or reactants that are used by a chemical reaction before other reagents. The reactant or reagent having the lowest supply in relation to its required ratio compared to other reactants within the system is the limiting factor.
A chemical reactant known as a limiting reagent restricts the amount of product that may be produced. Based on the reagents (reactants) at hand, the limiting reagent produces the least amount of product. The theoretical yield refers to this minimum product yield.
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How many atoms are in 3Mg(OH)2?
Answer:
15
Explanation:
Number of atoms of Mg = 3
Number of atoms of O = 3 × 2 = 6
Number of atoms of H = 3 × 2 = 6
So, total atoms = 3 + 6 + 6 = 15
How thick is the Earths crust in kilometers?
Answer:
The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans(oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust).
Explanation:
you butt is thick in kilometers
;)
7. if 45.52 ml of a potassium permanganate solution is needed to titrate 2.145 g of iron(ii) ammonium sulfate hexahydrate, calculate the molarity of the kmno4 solution.
The molarity of a solution is calculated from the number of moles of solute and the volume of solution in liters. The molarity of potassium permanganate solution 2.145 g of iron(ii) ammonium sulfate hexahydrate is 0.121 M.
What is molarity ?Molarity is used to represent the concentration of a solution. It is the ratio of number of moles of solute to the volume of solution in litres. Molarity depends on the temperature also.
The number of moles of a solute can be calculated from the molar mass and taken weight of the solute.
The molar mass of iron(ii) ammonium sulfate hexahydrate = 392.1 g/mol
Taken weight of solute = 2.145 g.
Therefore, the number of moles of iron(ii) ammonium sulfate hexahydrate = 2.145 / 392.1
= 0.0054 moles.
Now, the molarity of the solution is calculated as follows:
Molarity of solution =( no.of moles of iron(ii) ammonium sulfate hexahydrate ) / volume
= 0.0054 /0.045 L
= 0.121 M
Hence, The molarity of potassium permanganate solution 2.145 g of iron(ii) ammonium sulfate hexahydrate is 0.121 M.
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Density is defined as
Responses
A volume/massvolume/mass
B length to mass ratiolength to mass ratio
C mass to length ratiomass to length ratio
D mass/volumemass
Answer:
D. Density is defined as mass/volume.
this tank has been set up with cold water on one side and warm water on the other. when the divider is removed and the two water samples are allowed to mix, what is most likely to happen?
Since warm water has more energy than cold water, its molecules move more quickly than those in cold water. Gradually both the water will have same temperature according to Principle of calorimetry.
Heat lost by the hot body = heat gained by the cold body
What is principle of calorimetry?
In a calorimeter, two different types of matter are in contact with one another, ideally a liquid and a solid. Both bodies are also at various temperatures. A higher-temperature object can transfer heat energy to a lower-temperature object thanks to this setup.
Heat transfer does not stop, nevertheless, until there is a state of thermal equilibrium between the bodies. The "rule of conservation of energy," which is represented by the principle of calorimetry, states that the total amount of heat absorbed by the cold object and the total amount of heat released by the hot object are equal.
Since warm water has more energy than cold water, its molecules move more quickly than those in cold water. Gradually both the water will have same temperature
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a sample of a material has 20002000 radioactive particles in it today. your grandfather measured 40004000 radioactive particles in it 6060 years ago. how many radioactive particles will the sample have 60 years60 years from today?
The remaining mass of radioactive elements with 60 years of half-life is 1000 particles.
We need to know about the half-life of the radioactive elements to solve this problem. The radioactive element will decay over time and follow the equation
N = No(1/2)^(t/t'')
where N is the final quantity, No is the initial quantity, λ is the decaying constant, t is time and t'' is the half-life of a radioactive element.
From the question above, we know that
t'' = 60 years
No = 2000 particles
t = 60 years
Calculate the remaining mass
N = No(1/2)^(t/t'')
N = 2000 x (1 / 2)^(60 / 60)
N = 1000 particles
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