In the group that is obtained by adding or deleting from each of the following groups, the indicated symmetry operation is c3 plus i. The correct option is a.
What are symmetries?In organic chemistry, the shape of the compounds that are formed is made or discovered. The shape of water molecules, benzene, etc. These structures of symmetries are sent by the connecting or joining of elements with bonds.
Citroën C3 is an organic compound that gives symmetry operation when a group or added or deleted from the compound.
Thus, the correct option is a. c3 plus i.
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Which factors could influence oxygen saturation measurement?
Multiple factors can affect the accuracy of a pulse oximeter reading, such as
poor circulation skin pigmentation skin thickness skin temperature current tobacco use use of fingernail polish.How to get the best reading from a pulse oximeter?Observe the manufacturer's recommended usage procedures. When you put the oximeter on your finger, make sure your hand is cosy, relaxed, and positioned below the level of your heart.
Remove any nail paint you might have had on that finger. While you are still seated, do not move the location of the pulse oximeter on your body. Wait for the reading to stabilize and display a single number after a brief interval.
If you note your oxygen levels along with the date and time of the reading, you can easily track changes in them and inform your healthcare physician about them. Follow your doctor's recommendations for how often and when to check your oxygen levels.
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Lauren walks 90 m in half a minute. What must her speed have been to travel this
distance?
90.5 m/min
0.006 m/min
45 m/min
O 180 m/min
Clear selection
Which atoms in the amino acids become the h2o molecule produced by their action in model?
Atoms in the amino acids become the h₂O molecule produced by their action in the model and come off from the central carbon and nitrogen but not from the carboxyl, R side chain, or amine.
An amino acid is a group of organic molecules that consist of a basic acidic carboxyl group (―COOH), amino group (―NH2), and an organic R group (or side chain) that is different from each amino acid. Amino acid, the term is a short form of α-amino [alpha-amino] carboxylic acid.
Whereas, the peptide bond is the chemical bond which is a chemical bond formed between two molecules when the carboxyl group of a particular molecule reacts with the amino group of the other molecule, leading to releasing a molecule of water (H2O).
Each molecule consists of a central carbon atom referred to as the α-carbon, to which both a carboxyl group and amino are attached. The remaining two bonds of the α-carbon atom are generally occupied by the R group and a hydrogen (H) atom .
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If the initial concentration of so2cl2so2cl2 is 0.150 mm , what is the concentration of so2cl2so2cl2 after 190 ss ? [so2cl2]t[so2cl2]t = 1.13 mm submitprevious answersrequest answer
Use integrated first order rate law, which give you the concentration of reactant sulfuryl chloride as function of time t:
ln[SO₂Cl₂] = ln[SO₂Cl₂]₀ - k∙t
([SO₂Cl₂]₀ i the initial concentration and k is the rate constant)
=> [SO₂Cl₂] = e^(ln[SO₂Cl₂]₀ - k∙t) = e^(ln[SO₂Cl₂]₀) ∙ e^( - k∙t)
= [SO₂Cl₂]₀ ∙e^( - k∙t)
The decomposition of SO₂Cl₂ follows the reaction equation
SO₂Cl₂ → SO₂ + Cl₂
So per mole of sulfuryl chloride disappeared one mole of sulfur dioxide is formed. Hence the changes in concentrations of these compounds are related as:
-∆[SO₂Cl₂] = ∆{SO₂] <=> [SO₂Cl₂]₀ - [SO₂Cl₂] = [SO₂] - [SO₂]₀
Assuming there was initially no sulfur dioxide you get for its concentration:
[SO₂] = [SO₂Cl₂]₀ - [SO₂Cl₂]
= [SO₂Cl₂]₀ - [SO₂Cl₂]₀ ∙e^( - k∙t)
= [SO₂Cl₂]₀ ∙(1 - e^( - k∙t))
after 210s starting with 0.150M of [SO₂Cl₂]
[SO₂]= 0.150M ∙(1 - e^( - 1.48×10⁻⁴s⁻¹k ∙ 240s) =
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A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.152 g of hydrogen gas. what is the percent zinc in the original mixture?
percentage of zinc= 5.985/20 X 100= 29.5%
let x represents zinc and y be magnesium so
Zinc(s) + 2HCl(aq) -----> ZnCl2(aq) + H2(g)
Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)
1.152 g of hydrogen gas=( x/65.3 + y/24.305) 20
= 3.08 x10^-2 + 0.8295-8.30
=x=5.985
y= 4.015
percentage of zinc= 5.985/20 X 100= 29.5%
The hydrogen gas escapes, so the two products of Zinc Chloride and Magnesium Chloride will then react with Silver Nitrate. Again, I combine both of the reactions
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When an acid is dissolved in water, how does it change the solution's ph?
When an acid is dissolved in water, by releasing protons into the solution, it lowers the pH.
What is pH?
The letters pH stand for the potential of hydrogen since pH is essentially a measurement of the number of hydrogen ions (i.e. protons) in a substance. The pH scale was created in 1923 by scientist Peter Lauritz Srensen. (1868-1969).
The pH of a solution is a key marker of its chemical makeup. The pH can have an impact on the biological processes that take place, the behavior of bacteria, and the behavior of chemicals.
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The organic compounds that are divided into two types, simple and complex, are called _____.
The organic compounds that are divided into two types, simple and complex, are called carbohydrates.
Carbohydrates are diveded into twy types: simple and complex (starches, fiber, glycogen).
Simple carbohydrates are made of one (monosaccaharides) or two sugar units.
Complex carbohydrates are made up of many sugar units.
For example, glucose (C₆H₁₂O₆) is a simple carbohydrate.
Glucose is chemical compound composed of six carbon atoms, twelve hydrogen atoms and six oxygen atoms.
Starch is a polymeric carbohydrate consisting of a large number of glucose units bonded by glycosidic bond. Starch is a white, tasteless and odorless powder that is insoluble in cold water or alcohol.
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A student wants to determine if a
sample of tap water contains Mg+2.
Which of the following pieces of
information are not needed to do a
titration ?
A. The number of moles of Mg ions that will be
bound to 1 mole of EDTA or the EDTA like compound
used.
B. The density of magnesium.
C. The molarity of the EDTA or EDTA like chemical
used in the titration.
Calculate the ratio (lb-mole o2 react/lb-mole no formed). if ammonia is fed to a continuous reactor at a rate of 100.0 kmol nh3/h, what oxygen feed rate (kmol/h) would correspond to 40.0xcess o2?
if ammonia is fed to a continuous reactor at a rate of 100.0 kmol nh3/h
175 Kmol/h is oxygen the fed rate that corresponds to 40% excess O₂.
Given chemical reaction is
4NH₃ + 5O₂ → 4NO + 6H₂O
The molecular weight of NH₃ is 17.03, O₂ is 32, NO is 30, and, H₂O is 18.
To find the ratio,
Ratio = lb-mole O₂ react / lb-mole NO formed
Or, ratio = 5/4
Or, ratio = 1.25
NH₃ fed rate = 100 Kmol/h
We have to find out whether the Oxygen fed rate corresponds to 40% excess O₂.
For each 4 Kmol of NH₃, 5 Kmol of O₂ is required.
4 Kmol of NH₃ ≡ 5 Kmol of O₂
100 Kmol of NH₃ ≡ 125 Kmol of O₂
So, 125 Kmol of O₂ is required for 100 Kmol of NH₃.
For 40% excess of O₂, the required Kmol is = 125 + 125 × 40%
The required Kmol of oxygen is 175 Kmol/h for excess of O₂.
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Identify the pure substance among the following:
sugar
iron ore
sugar solution
saline solution
Answer:
Iron ore
Explanation:
Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel
What type of functional groups or atoms would need to be present in the r groups for hydrogen?
Alcohols (O-H), acids (COOH), or amines (NH2)-polar groups are need to be present in the R group for hydrogen.
This type of functional group contains only hydrogen and carbon as constituent elements. They are commonly represented with ‘R’. They are also called hydrocarbyl groups. The bonding between the carbon atoms can be single, double, or triple.
When we define a functional group, we imply a group of atoms of the same or different elements forming a chemically-active section of a compound and creating a class of new compounds. In organic chemistry, there are many such functional groups. For example, an alcohol group (-OH) defines a particular set of characteristics of the compounds that have it as a constituent. These characteristics will vary from one functional group to the other.
Therefore,
Three function groups Alcohols (O-H), acids (COOH), or amines (NH2) needs to be present in the R group for hydrogen.
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How does the inorganic portion of soil form?
A: Soils get formed by melting and cooling processes
B: Rocks get weathered by chemical and physical means to form soils.
C: Heat and pressure change rocks into soils
D: Sand and silt get deposited by rivers and streams
(Please help!! I need a A+!!!)
Answer:
B
Explanation:
seriously (MÀJÌKÁÎ DÊẞÜ)
Give examples of:
3 Solid to solid mixtures
3 Solid to liquid
3 liquid to liquid
3 liquid to gas
thanks
Answer:
Explanation: Solid to Solid mixtures
1. Iron+Sulphur
2. Pottasium Nitrate+Potassium Chlorate
3. Ammonium Chloride+Sodium Chloride
Solid to Liquid Mixtures
1. Salt+Water
2. Sand+Water
3. Calcium Carbonate+Water
Liquid to Liquid Mixtures
1. Alcohol+Water
2. Oil+Water
3. Kerosene+Water
Liquid to Gas Mixtures
1. Hydrogen+Oxygen
2. Hydrogen Chloride+Nitogen
3.Air (Air is a mixture of many gases)
HELP PLEASE ILL RATE U 5 STARS
In a table, list the physical characteristics of the elements hydrogen (H) and nitrogen
(N), and the compound ammonia (NH3). Remember that this includes what they look
like, their melting point, their boiling point, and their state of matter at room temperature. Then, describe what is similar and what is different between the two elements and the compound (NH3).
Atomic # / Symbol / Name / Melting Point (ºC) / Boiling Point (ºC)
1 / H / Hydrogen / -259.14 / -252.87
2 / N / Nitrogen / -209.86 / -195.8.
3 / NH3 / Compound Ammonia / -77.7 / -33.3
For Hydrogen, the Melting point is -259.14, while for the Nitrogen it's -209.86. And the boiling point for Hydrogen is -252.87, while for the Nitrogen it's -195.8. The difference is that Hydrogen has less temperature in melting and boiling points, while Nitrogen has more. And for the Ammonia, this one has the most temperature, being at -77.7 degrees celsius for melting point, which is -107.9°F, and being at -33.3 degrees celsius, which is -28.01°F
What multiplicities are observed for the signals in the off-resonance decoupled 13c nmr spectrum of (2e)-3-chloro acrylaldehyde?
The multiplicities that are observed for the signals in the off-resonance decoupled 13c nmr spectrum of (2e)-3-chloro acrylaldehyde is a singlet, a triplet, and a quartet. The correct option is E.
What is off-resonance decoupling?Off-resonance decoupling is a process of removing all hydrogen and carbon coupling from a signal except for the place which is near the nucleus or joined with the nucleus.
In NMR also, the coupling of hydrogen and carbon is removed except for the place near the nucleus.
Thus, the correct option is E) a singlet, a triplet, and a quartet.
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The question is incomplete. Your most probably complete question is given below:
A) 2 singlets and a doublet
B) a singlet and 2 doublets
C) 3 singlets
D) a singlet, a doublet, and a triplet
E) a singlet, a triplet, and a quartet
If the price of music lessons falls to
$
20
$20dollar sign, 20, which of the following best describes the income and substitution effects?
If the price of music lessons falls to $20, the statement which best describes the income and substitution effects is: C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
What is price?Price can be define as an amount of money which is primarily set by the seller of a good (product), and it must be paid by a buyer to the seller, so as to enable the acquisition of this good (product).
What is an income effect?Income effect can be defined as a phenomenon which causes an individual (consumer) to adjust his or her consumption of a product due to an increase in its price and change in the level of income.
In conclusion, we can reasonably infer and logically deduce that for each music lesson Emily had purchased before, there is an extra $40 to spend on either music lessons or socks, and as such she might buy more of both due to the income effect.
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Complete Question:
Emily is a rational consumer who gets utility from socks and music lessons, and she considers both of these goods normal goods. Her marginal utility from socks is 50 utils and the price of socks is $5 per pair. Her marginal utility from music lessons is 600 utils and the price of music lessons is $60.
If the price of music lessons falls to $20, which of the following best describes the income and substitution effects?
A. The income effect is that she got a raise from her employer. The substitution effect is that music lessons are now relatively cheaper so she will buy more music lessons.
B. The income effect is that she effectively has more money to spend on either good. The substitution effect is that she will only buy socks now.
C. The income effect is that she now can spend more on both goods. The substitution effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
D. The income effect is that she will no longer buy socks because she has more income to spend on music lessons, so she will only buy music lessons.
E. The substitution effect is that she now can spend more on either good. The income effect is that the price of music lessons relative to socks has decreased so she will definitely buy more music lessons.
true or false: sn2 mechanism for nucleophilic substitution reactions involves one step and occurs with inversion of configuration.
Sn2 mechanism for nucleophilic substitution reactions involves one step and occurs with inversion of configuration is true.
Sn2 is a single-step mechanism in which the bond is broken by the attacking nucleophile from the back of the carbon atom. Two reactants are involved in this reaction.
In this mechanism, The nucleophile approaches the substrate at 180° to the carbon leaving group. The carbon-nucleophile bond is formed and the carbon leaving group breaks.
The nucleophile can attack at the same side where the leaving group is present or the nucleophile can attack from the opposite side of the carbon atom. Since complete inversion of configuration is required, so it is compulsory for the nucleophile to attach from the opposite side.
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What information does a topographical map primarily provide?
Answer:
A detailed map which shows every feature of the earth accurately including roads, airports, names of places etc is called a topographical map
Explanation:
In which set do all elements tend to form anions in binary ionic compounds? n, s, i rb, al, s sr, ni, hg li, sb, bi
The correct set is N, S, and I.
The right combination is N, S, and I.
The ions of two separate elements, one of which is a metal and the other a nonmetal, make up a binary ionic combination. As a result, in binary ionic compounds, metals form cations and non-metals produce anions. As non-metals, nitrogen (N), sulfur (S), and iondine (1) produce anions in binary ionic compounds anions.
Since Li is a metal, it cannot form an anion.
The other sets are wrong.
Being metals, Rb and Al do not form.
Sr, Ni, and other metals are not anions since they are metals.
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Identify some materials that possess a non crystalline structure?3.1 what is the dilemma between design and manufacturing in terms of mechanical properties?
1) Many important materials are noncrystalline, such as liquids and gases. Water and air have noncrystalline structures. When a metal is melted, its crystalline structure is lost.
2) Mechanical properties such as high strength are desirable for design, but they make manufacturing more difficult. As a result, design properties disadvantage manufacturing properties and vice versa.
Give examples of non-crystalline solids.Non-crystalline solids, on the other hand, allow particles to move more freely because they are not as rigidly arranged as other solids. These solids form when a liquid is suddenly cooled. Plastic and glass are two of the most common examples.
Why are crystalline solids referred to as pseudo solids?As a result, they are referred to as "pseudo solids." Crystalline solids have less energy than non-crystalline solids. Solids are classified into two types: crystalline solids and non-crystalline solids.
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In the experiments conducted by avery, mccarty, and macleod, which hypothetical result would indicate that protein, not nucleic acid, was griffith's transforming substance?
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.
A buffer solution is composed of 9.00 mol of acid and 4.75 mol of the conjugate base. if the pa of the acid is 2.40 , what is the ph of the buffer?
The pH of buffer solution is 2.1225
We know that
pH = [tex]pK_a[/tex] + [tex]log_1_0 \frac{[A]^{-} }{[HA]}[/tex]
In this question
[tex]pK_a[/tex] = 2.40
[tex][A]^{-}[/tex] = 4.75 mol
[HA] = 9 mol
Therefore putting values in formula
pH = 2.40 + [tex]log_1_0\frac{4.75}{9}[/tex]
pH = 2.40 + [tex]log_1_0[/tex] 0.52
pH = 2.40 - 0.283
pH = 2.1225
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Where corrosion protection is necessary and the conduit is threaded in the field, the threads must be coated with a(n) ______, electrically conductive, corrosion-resistance compound.
Where corrosion protection is vital and the conduit is threaded in the field, the threads must be coated with a(n) Approved electrically conductive, corrosion-resistance compound.
What is corrosion protection?
A corrosion protection method may be a technique used to minimize corrosion such as the application of anti-corrosion coating, cathodic protection, or other methods that make metal resistant to corrosion.
Metal corrosion in most situations is usually slowed, managed, or maybe put to a stop utilizing the right techniques.
What does one mean by corrosion?
Corrosion may be a natural process which converts refined metal to their more stable oxide.It is the gradual destruction of materials {usually metals} by chemical reaction with their environment.In the most common use of the world, this suggests electrochemical oxidation of metals in reaction with an oxidant such as oxygen.
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if correct I will mark brainliest
When a solid, such as a truck, moves from one place to another, the volume of the truck stays the same. What would be true about the shape of the truck? (2 points)
Group of answer choices
The truck changes its shape.
The truck decreases its shape.
The truck increases its shape.
The truck keeps its shape.
Answer:
Explanation:
The option that would be true about the shape of the truck is that the truck keeps its shape. Thus, the correct option is D.
What is the volume of solid?
The volume of a solid may be defined as the process of measuring the overall space that an object takes up in its physical structure.
The volume of any solid alters with respect to its shape. If its shape increases, the volume definitely increases, while if its shape decreases, the volume ultimately reduces.
Therefore, the option that would be true about the shape of the truck is that the truck keeps its shape. Thus, the correct option is D.
A chemist is designing an experiment to investigate the effect of temperature on the rate of a chemical change. Suggest a suitable hypothesis for the experiment. Also, list the dependent, independent, and controlled variables that can exist in such an investigation.
A suitable hypothesis for the above experiment conducted by the chemist is as follows: IF the temperature is increased, THEN the rate of chemical change will also increase.
Independent variable - TemperatureDependent variable - Rate of chemical changeWhat is an experiment?Experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
A hypothesis is an educated guess or a tentative conjecture explaining an observation or scientific problem.
According to this question, a chemist is designing an experiment to investigate the effect of temperature on the rate of a chemical change.
This suggests that a suitable hypothesis for the above experiment conducted by the chemist is as follows: IF the temperature is increased, THEN the rate of chemical change will also increase.
Also, the Independent variable is the temperature because it is the variable that is changed.
Dependent variable is the rate of chemical change because it is the measured variable.
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Answer:
A suitable hypothesis for the above experiment conducted by the chemist is as follows: IF the temperature is increased, THEN the rate of chemical change will also increase.
Independent variable - Temperature
Dependent variable - Rate of chemical change
controlled variable - pressure or concentration of the reactants
2. Which of the following is determined by distance divided by time with direction?
a Acceleration
b Velocity
C speed
How many molecules of co2 are there in a sample of dry ice (solid co2) with a mass of 10.8 g?
Carbon dioxide may be found in solid form as dry ice.
What is Dry ice ?Carbon dioxide may be found in solid form as dry ice. CO2 is widely used for temporary cooling since it does not have a liquid state at normal atmospheric pressure and instead sublimates immediately from the solid state to the gas state.
Dry ice is used as a refrigerant, particularly when shipping perishable goods like meats or ice cream, as it sublimes (passes straight into the vapour without melting) around 78.5 °C (109.3 °F).
Dry ice is carbon dioxide in its solid form.
Mass of CO2 = 10.8g
Molar mass of CO2 = 44g/mol
molecules of CO2 = 10.8g * 1 mol/44g= 0.245 mol * 6.022 * 10²³ molecules/1 mol= 1.48 * 10 ²³molecules.
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The number of molecules is 1.48 × 10 ²³molecules
Elaborate:
Mass of CO₂ = 10.8 g
Molar mass of CO₂ = 44 g/mol
molecules of CO₂ = 10.8 g × 1 mol/ 44 g= 0.245 mol × 6.022 × 10²³ molecules/1 mol= 1.48 × 10 ²³molecules
What is solid ?
Carbon dioxide may be found in solid form as dry ice. CO₂ is widely used for temporary cooling since it doesn't have a liquid state at normal atmospheric pressure and instead sublimates immediately from the solid state to the gas state.
Dry ice is used as a refrigerant, particularly when shipping perishable goods like meats or frozen dessert , because it sublimes (passes straight into the vapour without melting) around 78.5 °C (109.3 °F).
solid is carbon dioxide in its solid form.
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someone please help me i wasn’t here in class when this was taught
Answer:
text me i can teach you on inbox
What mass of agcl will precipitate when 10.0 g of nacl is added to an aqueous solution of agno3?
When 10.0 g of NaCl is added to an aqueous solution of AgNO₃, 24.5 g AgCl will be precipitated.
The balanced chemical reaction is:
NaCl(aq) + AgNO₃(aq) → AgCl(s) + NaNO₃(aq)
Molar mass of NaCl = 58.5 g
Molar mass of AgCl = 143.5 g
Number of moles of NaCl = Given Mass
Molecular Mass
= 10.0 g ÷ 58.44 g/mol
= 0.171 moles
From the reaction,
58.5 g of NaCl produces 143.5 g of AgCl
10.0 g of NaCl will produce 143.5 × 10.0 = 24.5 g AgCl
58.5
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one isotope of tellurium, tellurium-123, has seventy one neutrons. what must tellurium's atomic number be?
The atomic number of an isotope of tellurium that has 71 neutrons is 52.
What is atomic number?The atomic number of an element is the number of protons in an atom of that element.
The number of protons in an atom can be got by subtracting the mass number of an element from the number of neutrons.
According to this question, one isotope of tellurium, tellurium-123, has 71 neutrons. The atomic number or proton number can be calculated thus;
atomic number = 123 - 71
atomic number = 52
Therefore, the atomic number of an isotope of tellurium that has 71 neutrons is 52.
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Answer:
Explanation:l do not no the answer