The hypothetical result that would indicate Griffith's transforming substance is only the extracts from heat-killed cells treated with RNAS are unable to transform nonvirulent bacteria into virulent bacteria.
What is an experiment?An experiment is a scientific experiment that is conducted by scientists to prove a hypothesis.
In the experiments conducted by the scientists, the pure cells did not produce favorable findings, but they did exhibit transform ants that were quite similar to DNA.
Thus, the correct option is A, Only the extracts from heat-killed cells treated with RNAS are unable to transform nonvirulent bacteria into virulent bacteria.
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The question is incomplete. Your most probably complete question is given below:
Only the extracts from heat-killed cells treated with RNAS are unable to transform nonvirulent bacteria into virulent bacteria.
All the extracts from heat-killed cells are able to transform to nonvirulent bacteria.
Only the extracts from heat-killed cells treated with D.
The RNA of the bacteria used in this experiment was degraded.
Set the temperature of the green box to 300k. click on start. after 10 seconds remove the wall. what is the convincing evidence that entropy increased when the wall was removed?
Convincing evidence that entropy increased when the wall was removed, when the distribution of ball speeds evened out, and there was no longer a significant difference in distributions between the two boxes.
Entropy is just a measure of disorder and affects all aspects of our daily lives. If you add more energy by heating the gas, the amount of various possibilities for arranging the energy over the molecules increases.
For example, when a hot object is placed up-to-date with a chilly object, heat flows from the warmer one to the Entropy, never spontaneously from colder to hotter. If heat were to go away from the colder object and pass to the warmer one, energy could still be conserved.
The Second Law indicates that thermodynamic processes, i.e., processes that involve the transfer or conversion of warmth energy, are irreversible because all of them lead to a rise in entropy. Entropy measures what quantity thermal energy or heat per temperature.
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how are the earthquakes distributed on the map
The earthquakes distributed on the map on the fault lines at edge of tectonic plates.
Tectonic plate boundaries, or along fault lines, are where earthquakes are most likely to occur. On a map showing tectonic plates, earthquakes will be distributed along the lines on the map. The earthquake epicenter locations shown on the map are not dispersed around the earth's surface at random. The majority of earthquake epicenters are confined to a small area. Most earthquake epicenters, including those in the western parts of North and South America, are found at the edges of certain continents. The Pacific Plate is likewise surrounded by earthquakes. Along the Himalayan mountain range, which is over India, there are also frequent earthquakes. Additionally, all regions with active volcanoes have an earthquake epicenter, but not all regions with earthquake epicenters have active volcanoes, if you try to compare the locations of earthquake epicenters and active volcanoes.To learn more about earthquakes visit:
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technique that separates mixture by solubility
The technique that is used to separate chemical mixtures by solubility is evaporation.
What is solubility?Solubility is defined as the process by which a substance called solute is able to dissolve in a solvent to form a solution.
Evaporation is an example of separation technique that helps in the separation of two substances based on their solubility.
Other examples of separation technique include the following:
Filtration,Distillation, andChromatography.When two substances form a solution, both can be separated into its different constituents through heating the solution in the process of evaporation.
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Sodium bicarbonate or beta-alanine used to improve anaerobic performances exert their effect by?
Sodium bicarbonate or beta-alanine used to improve anaerobic performances exert their effect on the slow rate of decrease of creatine phosphate.
Anaerobic means "with the air" and refers to the body's use of oxygen to produce energy. This typically includes exercises that last longer than 2 minutes. Continuous "steady state" exercise is done with aerobic exercise. Anaerobic means "without air" and refers to the body's ability to produce energy without using oxygen.
Examples of aerobic exercise include swimming laps, running, or cycling. Anaerobic exercise involves a rapid burst of energy and is performed with maximum effort in a short period of time. Examples include jumping, sprinting, and lifting heavy objects. "Walking is a great aerobic exercise. It's thought to be weight-bearing and good for bone strength and health," he says. Oftentimes, people feel unwell and want to lose weight and get fit, but think they need a gym membership to exercise.
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3. Which of the following is determined by a change in velocity divided by time?
a. Speed
b. Acceleration
c. Velocity
The measurement 0.035550 g rounded off to two significant figures would
be
Answer:
0.036g
Explanation:
I've learned about sig figs
PLEASE HELP!!!!!!!!!!! I'VE BEEN STUCK ON THIS FOR 45 MINUTES
A runner exerting a running force of 325 N to the right is met with an air resistance force of 45 N to the left. What is the net force of the runner?
The required force is 280 N.
We must subtract our individual forces in order to calculate the net force.
In general, whenever forces act on an object in opposite directions-the net force is equal to the difference between the two forces.
To calculate the net force, one force is subtracted from the other. therefore, here
325 N is force 1 to the right.
45 N is force 2 to the left.
Force 1 - Force 2 is the net force.
net force= 325N - 45N
net force= 280 N
So the required force is 280 N.
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The net force of the runner would be 280 N.
Hope this helps! Also, if you need help with the other questions regarding this assignment, feel free to check out the study set I made on Quizlet. Thanks and good luck!
Quizlet - "Unit 6: Lesson 2 Newton's First Law QC"
h t t p s : / / q u i z l e t. c o m / 7 3 7 7 5 9 5 5 5 / u n i t - 6 - l e s s o n - 2 - n e w t o n s - f i r s t - l a w - f l a s h - c a r d s / ? n e w
How many significant figures are in each measurement?
a.
b. 143 kg
c. 8.75 x 10 -2 g
d. 0.074 m
e. 1.072 cm
f. 0.05730 m
g. 8765 L
h. 11 soccer players
i. 40.007 m
Answer:
Explanation:
b. 3 sig figs
c. 3 sig figs
d. 2 sig fig
e. 4 sig fig
f. 4 sig fig
g. 4 sig fig
h. 2 sig fig
i. 5sig fig
E-mail is usually a poor choice for the distribution of sensitive electronic files because __________.
E-mail is usually a poor choice for the distribution of sensitive electronic files because e-mail is saved on that server which transfers it.
What is E-mail?
Electronic mail, also known as email or e-mail, is a way for individuals to communicate with one another using electronic devices. At a time when "mail" solely referred to physical mail, email was therefore developed as the electronic (digital) equivalent of, or counterpart to, mail (hence the prefix e- + mail).
In many realms of business, trade, government, education, entertainment, and other aspects of daily life in most countries, an email address is now frequently seen as a vital and necessary element.Later, email developed into a ubiquitous (very popular) communication method.
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Antibiotics are powerful medicines for treating some infections, but they have limitations. while antibiotics are very effective in the treatment of bacterial infections, they do not work against viral infections. what differences between bacteria and viruses account for this?
Differences between bacteria and viruses is that viruses do not have cell wall.
Only bacterial infections can be treated with antibiotics, viruses do not respond to antibiotics.
Antibiotics attack the cell wall or coating surrounding bacteria. There are two types of cell wall: Gram-positive and Gram-negative.
For example antibiotic penicillin:
After it was discovered, penicillin was very effective in destroying the bacterium Staphylococcus aureus. Today, because of natural selection in Staphylococcus aureus populations, they are resistant to antibiotics based on penicillin (Staphylococcus aureus bacterium is resistant to methicillin, β-lactam antibiotic of the penicillin class).
Staphylococcus aureus is a Gram-positive, round-shaped bacterium which causes a skin infections.
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The atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons?.
The atomic number of oxygen is 8. The mass number of an oxygen atom with 7 neutrons is 15.
What is atomic mass?Atomic mass is the average mass of the atom. It is measured in atomic mass units, that is Dalton. The mass number is calculated by the number of neutrons and atomic number.
The atomic number is the number of protons present in the atoms. The atomic number of oxygen is 8
The mass number can be calculated by adding those units
atomic number + number of neutrons
Mass number = 8 + 7 = 15
Thus, the mass number of an oxygen atom with 7 neutrons is 15.
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To make a water-insoluble substance water-soluble, a chemist could add groups with bonds between.
To make a water insoluble substance water soluble, a chemist can add groups with bonds between atoms with different attraction for electrons.
A water soluble drug or substance is easier to be taken up in your digestive system.
Positive and negative are attracted which makes a cohesive structure. When polar compounds or ions gets added to the water, these compounds breaks down or degrades into smaller components. They also might dissolve to become the part of the solution.
The partial charges of water attracts the various parts of a compound. When attraction occurs, it gets more soluble in the water.
Thus, by adding groups with bonds between atoms with different attraction for electrons, substance can become water soluble.
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Scientists conducting research found a new type of plastic. They are doing experiments to learn about its properties. Why would the scientists want to repeat their experiments?
Group of answer choices
C. to test different plastics
D. to try to color the plastic different colors
B. to make sure the data they collect are accurate
A. to check that this plastic is the same as another plastic
To make sure the data they collect are accurate
scientific method is a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypothesesaction research are studies carried out in the course of an activity or occupation, typically in the field of education, to improve the methods and approach of those involvedresearch problem are the tatement about an area of concern, a condition to be improved upon, a difficulty to be eliminated, or a troubling question that exists in scholarly literature, in theory, or in practice that points to the needed for comprehensive understanding and deliberate investigationTo know more about scientific method visit :
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What is thermodynamics?
a. the study of electric fields
b. the study of organic matter
c. the study of the nucleus
d. the study of heat flow
answer:
d. the study of heat flow.
explanation:
thermodynamics is the study of the relations between heat, work, temperature, and energy.
Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete.
3.45g sulfuric acid will be present in the mixture after the reaction is complete.
H₂SO₄ (aq) + Pb(CH₃COO)₂ (aq) ⇌ PbSO₄ (s) + 2 CH₃COOH (aq)
1 mole of sulphuric acid reacts with 1-mole lead(II) acetate to give 1-mole lead(II) sulfate and 2-mole acetic acid.
Mass of lead acetate reacting = 5.00g
Mass of sulphuric acid reacting = 5.00 g
Now, calculating the no. of moles of each reactant involved:
No. of moles = [tex]\frac{Given mass of substance}{Molar mass of substance}[/tex]
Moles of sulphuric acid = [tex]\frac{5.00g}{98.08g}[/tex]
= 0.510 mol
Moles of lead acetate = [tex]\frac{5.00g}{325.29g}[/tex]
= 0.0158 mol
Thus, 0.0158 moles of lead acetate will react with 0.0510 moles of sulphuric acid to give 0.0158 moles of lead sulfate and 0.0158 × 2 = 0.0316 moles of acetic acid.
Therefore, only 0.0158 moles of sulphuric acid will react.
So, the remaining moles = 0.510 - 0.0158
= 0.0352 mol
Remaining mass of sulphuric acid = 0.0352 × 98.08
= 3.45g
Hence, 3.45g sulfuric acid will be present in the mixture after the reaction is complete.
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Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid, 5.00 g of sulfuric acid, and 5.00 g of lead(II) acetate are mixed. Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete.
A jet airplane reaches 746. Km/h on a certain flight. What distance does it cover in 10.0 minutes? Set the math up. But don’t do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols.
The distance covered by the jet airplane in 10 minutes is 124.582 Km
What is speed?Speed is the distance travelled per unit. Mathematically, it can be expressed as:
Speed = distance / time
With the above formula, we can obtain the distance. Details below
How to determine the distanceThe following data were obtained from the question:
Speed = 746 Km/hTime = 10 minutes = 10 / 60 = 0.167 hourDistance =?Speed = distance / time
Cross multiply
Distance = speed × time
Distance = 746 × 0.167
Distance = 124.582 Km
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PLEASE HELP ASAP ILL RATE U 5 STARS AND BRAINLEY
Using the periodic table, draw Bohr-Rutherford Diagrams of each of the elements (one
atom) before bonding. Then draw the NH3 molecule indicating all the shared electrons as either dots or crosses (as Xs), paying close attention to the valence electrons. Indicate whether the formation of ammonia is an ionic or a covalent bond and explain your reasoning.
In the formation of ammonia, nitrogen shares three electrons in a covalent bond with three hydrogen atoms
What is the bonding in [tex]NH_{3}[/tex]?We can see that nitrogen has five electrons on its outermost shell. It is able to accept three electrons and share them with another atom in order to form a covalent bond.
In the formation of ammonia, nitrogen shares three electrons in a covalent bond with three hydrogen atoms to give the compound [tex]NH_{3}[/tex]. This explains why the bond that exists in the ammonia molecule is a covalent bond.
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1.1.F - Lesson Review: What is Science Knowledge?
help xnx
When we halve the quantities of reactants and products in a reaction, what happens to the value of the equilibrium constant?.
When we half the quantities of reactants and products in a reaction, the value of the equilibrium constant remains the same.
Formula:
The ratio between the quotient of product concentration to reactant concentration is given below.K = [P]/[R]
Here, [P] is the concentration of the product.
[R] is the concentration of reactant.
If we double the quantities of reactants and products in the final concentration it'll become[R]2= 1/2×[R]1 and [P]2 = 1/2×[P]1
Now at the initial stageK1 = [P1] / [R1]
In the final stage after making the quantities halfK2 = [P2] / [R2]
Putting the given values in the formulaK2/K1 = [P2] / [R2] ÷ [P1] / [R1]
K2/K1 = [P2] / [R2] x [R1] / [P1]
K2/K1= 1/2×[P]1 ÷ 1/2 [R1] x [R1] / [P1]
K2=K1 = 1/2 ÷ 1/2
K2/K1 = 1/2 x 2/1
K2 / K1 = 1
K2 = K1
Thus, the value of the equilibrium constant remains the same.
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Incoming solar energy is redirected by particulate matter and gas molecules in the atmosphere, therefore lost to earth through what process?
Scattering occurs when particles or large gas molecules present in the atmosphere interact with and cause the electromagnetic radiation to be redirected from its original path. How much scattering takes place depends on several factors including the wavelength of the radiation, the abundance of particles or gases, and the distance the radiation travels through the atmosphere. There are three (3) types of scattering which take place.
Rayleigh scatteringMie scatteringNonselective scatteringScattering is a term used in physics to describe a broad vary of physical processes where moving particles or radiation of some form, such as light or sound, are compelled to deviate from a straight trajectory with the aid of localized non-uniformities (including particles and radiation) in the medium thru which they pass by.
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Write the henderson-hasselbalch equation for a propanoic acid solution (ch3ch2co2h, pka=4.874).
Henderson's Hasselbalch equation for the propanoic acid
[tex]solution \: is \: pH=4.874 + log \frac{[A ^{ - } ] }{HA}[/tex]
This is called known as the Henderson- Hasselbalch equation which relates the pH of an acid aqueous solution with the acid dissociation constant.
[tex]pH=pK _{a } + log \frac{Conjugate \: base}{acid}[/tex]
The Henderson-Hasselbalch equation is derived from the definition of the acid dissociation constant as follows.
Consider the hypothetical compound HA in water.
[tex]HA +H _{2}O→ H _{3} O ^{ + } + A^{ - } [/tex]
The acid dissociation constant of HA,
[tex] [H _3O ^{ + }] = K _a \times \frac{HA}{[A ^{ - } ] }[/tex]
[tex]log [H _3O ^{ + }] = logK_a+log\frac{HA}{[A ^{ - } ] }[/tex]
Multiply both sides of the equation by -1.
[tex]-log[H_3O ^{ + }]=-logK_a-log\frac{HA}{[A ^{-} ] }[/tex]
[tex]pH=pK _{a }+log \frac{[A ^{ - } ] }{HA}[/tex]
[tex][HA] = [A-][/tex]
[tex]pH =pKa +log1[/tex]
[tex]pH = pKa + 0[/tex]
pH=pKa
pKa value of compounds can be determined experimentally using its relation with pH.
According to the Henderson-Hasselbalch equation, when the concentrations of the acid and the conjugate base are the same, i.e when the acid is 50% dissociated, the pH of the solution is equal to the pKa of the acid.
[tex]pK _{a } \: value \: for \: propanoic \:acid \: = 4.874[/tex]
[tex]Let \: propanoic \: acid \: be \: HA.[/tex]
[tex]Let \: propionate \: be \:A ^{ - } .[/tex]
So Henderson-hasselbalch equation for the propanoic acid solution is,
[tex]pH=pK _{a } + log \frac{[A ^{ - } ] }{HA}[/tex]
[tex]pH=4.874 + log \frac{[A ^{ - } ] }{HA}[/tex]
Therefore, Henderson's Hasselbalch equation for the propanoic acid solution is
[tex]pH=4.874 + log \frac{[A ^{ - } ] }{HA}.[/tex]
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When phosphate is added to adp to form the energy-storing molecule atp, this is known as ________ and, since water is also produced, this reaction is also considered a ________ reaction.
When phosphate is added to ADP to form the energy-storing molecule ATP, this is often often known as phosphorylation and, since water is additionally produced, this reaction is additionally considered a condensation reaction.
What are phosphorylation and condensation?
Phosphorylation could also be a condensation reaction that is important for the functioning of sugars, lipids, and proteins and is critical when it involves regulating the function of enzymes. one among the simplest phosphorylation reactions in nature is the phosphorylation of glucose which is the first step in glycolysis.
What happens when a phosphate molecule is added to ADP?
When the cell has extra energy (gained from breaking down food that has been consumed or, within the case of plants, made via photosynthesis), it stores that energy by reattaching a free phosphate molecule to ADP, turning it back to ATP. The ATP molecule is simply like a rechargeable battery.
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One serving of peanuts has about 166.000 calories. Convert this to Joules.
[answer: 695,000 J]
please show me the work! thank youu!
One serving of peanuts has about 166.000 calorie then in joules are 695,000 Joule means 694.544 Joule and 'joule is the amount of energy exerted when a force of one newton is applied over a displacement of one meter'
A calorie is a unit of energy in nutrition, calories refer to the energy people get from the food and drink they consume, and the energy they use in physical activity and calories are listed in the nutritional information on all food packaging many weight loss programs center around reducing the intake of calories.
Here given data is peanuts = 166.000 calories given in the calories then we have to find in joules = ?
In the thermochemical calories to joule we have one given value i.e
1cal th = 4.184 J means here 1 cal = 4.184 J
So, we have to calculate 166.000 calories
Then, 4.184×166.000
= 694.544 J
Which is approximately 695,000 J
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Solid calcium carbide, cac2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, c2h2
Solid calcium carbide, cac2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, c2h2
CaC2(s)+2H2O(l)→Ca(OH)2(aq)+C2H2(g)
A solution is a homogeneous mixture of two or more components with particle sizes less than 1 nm. Common examples of solutions are the sugar in water and salt in water, soda water, etc. All components appear as one phase in the solution.
Examples of solutions include salt water, rubbing alcohol, and sugar dissolved in water. If you mix salt and water and look closely, you will not see any salt particles and you will have a homogeneous mixture.
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1 proton 0 neutrons and is a neutron
Answer: Nuclear fusion
Explanation:
I think
After being made in glycolysis and the krebs cycle the nadh and fadh2 bring the electrons to:______.
After being made in glycolysis and the krebs cycle the nadh and fadh2 bring the electrons to: ATP.
NADH and FADH2 molecules formed during Glycolysis and biological processes carry their electrons to the electron transport chain. The electron transport chain creates a proton gradient that ultimately ends up in the assembly of an outsized amount of ATP.
High-energy electrons are released from NADH and FADH2, and they move along electron transport chains, like those employed in photosynthesis. because the high-energy electrons are transported along the chains, a number of their energy is captured.
Both NADH and FADH2 donate two electrons to the electron transport chain, so theoretically they must make the identical amount of ATP.
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What volume would a 200 g sample of gold have, if its density is known to be 19.3 g/cm³?
Answer:
The volume that a 200 g gold sample would have is 10.36 mL.
Step-by-step explanation:
In this case it is known that the density of gold is 19.3 g / mL. This indicates that in 1 mL there are 19.3 g. Then the following rule of three can be applied: if 19.3 g is contained in 1 mL, how much volume is 200 g of gold?
volume= 10.36 mL
The first location of chemical and mechanical digestion is the stomach. true/ false
The first location of chemical and mechanical digestion is the stomach. This statement is false.
Digestion is the breaking down of large insoluble food molecules into smaller water-soluble food molecules so that they can be absorbed into the aqueous plasma. In certain organisms, these small substances are absorbed from the small intestine into the bloodstream. Digestion is important for breaking down food into nutrients that the body uses for energy, growth, and cell repair that it needs to survive.
The digestive system has many forms. A basic distinction is made between internal and external digestion. External digestion evolved early in evolutionary history, and most fungi still rely on it. During this process, enzymes are secreted into the organism's environment, where organic substances are decomposed and some of the products diffuse back into the organism. Animals have a tube (alimentary canal) where internal digestion takes place. This is more efficient as more decomposition products can be trapped and the internal chemical environment can be more effectively controlled.
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Scientific knowledge results from the interaction of scientists who are investigating natural phenomena. Which of these BEST describes how a scientific explanation becomes widely accepted?
Group of answer choices
DNA is not necessary for an organism to reproduce.
Organisms create their own DNA sequence that is not like their parents.
. DNA contains genes that hold specific traits for an organism.
A. DNA is an exact copy from parent to offspring
The correct answer is option a) A hypothesis is tested repeatedly and the results are confirmed and debated by the scientific community.
Scientific knowledge is the knowledge that has been acquired and tested using the scientific method. Scientific knowledge may also comprise the observation and classification of facts to establish verifiable knowledge gained through induction and hypothesis.
A hypothesis is a proposed explanation for an event that can be tested. Hypotheses, or tentative explanations, are typically generated within the context of a scientific theory. A widely accepted, rigorously investigated and verified explanation for a collection of observations or a phenomenon is what is known as a scientific theory. The basis of all scientific knowledge is a scientific theory.
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Scientific knowledge results from the interaction of scientists who are investigating natural phenomena. Which of these BEST describes how a scientific explanation becomes widely accepted?
a) A hypothesis is tested repeatedly and the results are confirmed and debated by the scientific community.
b) It is debated by the scientific community.
c) A hypothesis is tested repeatedly and the results of the tests are debated.
d) A hypothesis is tested repeatedly and the results are mostly supported by scientific investigations.
It is economical to use scrap iron to get copper.
Give one reason why.
Answer:
Yes is my final answer
Explanation:
1. Scrap iron is used to displace copper because it is a more reactive, cheaper metal, making it a cost-effective way to produce copper. Scrap or old iron is also easier to obtain, as it is one of the world’s most recycled scrap metals. During a displacement reaction, iron reacts with a copper sulphate solution. This causes the iron ion to displace the copper to form iron sulphate, with solid copper being produced as a result.