22 Directions: Select the correct food web. In Ottawalley National Park, grass is abundant. Gazelles spend most of the day feeding on grass, their main source of food. Gazelles are hunted and eaten by the park's wild dogs. Lions are a predator of both wild dogs and gazelles. Which of the following food webs best represents the relationships described above? lion lion wild dog - wild dog gazelle gazelle grass grass lion lion wild dog wild dog gazelle gazelle grass grass
Answers
Answer:
Explanation:
22 Directions: Select the correct food web. In Ottawalley National Park, grass is abundant. Gazelles spend most of the day feeding on grass, their main source of food. Gazelles are hunted and eaten by the park's wild dogs. Lions are a predator of both wild dogs and gazelles. Which of the following food webs best represents the relationships described above? lion lion wild dog - wild dog gazelle gazelle grass grass lion lion wild dog wild dog gazelle gazelle grass grass
Answer:
its the 4th one i just did it on study island
Explanation:
Related Questions
What do these two changes have in common?
crushing a mineral into powder
picking up a paper clip with a magnet
Select all that apply.
Both are changes of state.
Both conserve mass.
Submit
Both are only physical changes.
Both are chemical changes.
Answers
The appearance and observable qualities of matter are considered to be its physical attributes. Colour, smell, taste, solubility, etc. An attribute that appears during a chemical reaction is known as a chemical property. A few examples include pH, reactivity, and flammability, etc. The correct option is B.
The chemical makeup or content of matter are not altered after a physical transformation. The internal makeup is unaffected as molecules rearrange themselves during this transformation. The chemical attribute is unaffected by a physical change.
Here both crushing a mineral into powder and picking up a paper clip with a magnet are physical changes.
Thus the correct option is B.
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What type of chemical reaction is demonstrated by this equation? A+BX-AX+B
Answers
Answer:
d an acid - base reaction.
Explanation:
Answer:
single replacement
Explanation:Look it up and got it from quizlet it should be right.
Gases are most ideal at high temperature and low pressure. (T/F)
Answers
Answer:
true
Explanation:
considering the equation for the oxidation of glucose, the cell must have a constant supply of carbon dioxide for this reaction to occur. group starts
Answers
The statement would be false as the given equation for the oxidation of glucose, the cell must have a constant supply of carbon dioxide for this reaction to occur. The statement is false because the Carbon Dioxide (CO2) is a product not a reactant.
The oxidation of glucose in the presence of oxygen in the chemical reaction is known as respiration. It is very important for human metabolism rate. It helps proper growth of human metabolism rate and maintain the human body and immune system. The given chemical reaction is :
Glucose (C6H12O5) + 6 O2 -------> 6 Carbon Dioxide (CO2) + Water
The given question is incomplete. The complete question would be Considering the equation for the oxidation of glucose, the cell must have a constant supply of carbon dioxide for this reaction to occur.
You have to mentioned the above statement as True or False.
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Which statement is true about A nickel-cadmium dry cell?
Answers
Answer:
The cathode reaction is NiO2+H2O+2e−→Ni(OH)2+2OH−.
The triple point of water occurs at a pressure of 4.59 mmHg.
What is the pressure in atm?
Answers
Answer:
The pressure in atm is 6.04 x 10^-3
Explanation:
Pressure of the gas is defined as the force exerted by the particles on the walls of the container. It is expressed in various terms like 'mmHg', 'atm', 'kiloPascals' etc..
All these units of pressure are inter convertible.
Pressure of the gas = 4.59 mm Hg
760 mm Hg = 1 atm
4.59 mm Hg= 1/760 x 4.59 = 6.04 x 10^-3atm
The pressure in atm is 6.04 x 10^-3
salat tarawih itu boleh dilakukan di masjis
What is the adjective used to describe a mixture of substances soluble together? q7. what is the adjective used to describe a mixture of substances insoluble together?
Answers
The adjective used to describe a mixture of substances soluble together is miscible and the adjective used to describe a mixture of substances insoluble together is immiscible.
The adjectives used to describe mixtures of substances that are either soluble or insoluble together.
Miscible: The term "miscible" is used to describe a mixture of substances that are soluble together. When two or more substances are miscible, it means they can mix and dissolve in each other to form a homogeneous solution. The individual particles of the substances distribute uniformly throughout the mixture, resulting in a single phase.
Examples of miscible substances include:
1. Ethanol and water: Ethanol (alcohol) and water are miscible; they can be mixed together in any proportion and form a homogeneous solution.
2. Sugar and water: Sugar readily dissolves in water, and the two substances mix uniformly to form a homogeneous solution.
In miscible mixtures, the attractive forces between the particles of different substances are strong enough to overcome any repulsive forces, allowing them to mix and dissolve.
Immiscible: The term "immiscible" is used to describe a mixture of substances that are insoluble together. In an immiscible mixture, the substances do not mix or dissolve in each other and remain as separate phases or layers within the mixture.
Examples of immiscible substances include:
1. Oil and water: Oil and water do not mix or dissolve in each other. When mixed, they separate into distinct layers, with the oil floating on top of the water due to differences in density.
2. Hexane and water: Hexane (a hydrocarbon) and water are immiscible. They do not mix together and form separate layers in a mixture.
In immiscible mixtures, the attractive forces between the particles of the different substances are not strong enough to overcome the repulsive forces, resulting in the inability to form a homogeneous solution.
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Another classmate argues that wind power merits more investment and development, and cites data in Figure 2 as evidence. Evaluate this argument. Do you agree with the classmate? What additional evidence would help strengthen your position?
PLEASE HELP!!!!!!!!!!!!!!!!
Answers
I believe that the wind power is more than they make it out to be. The most powerful and best is hydraulic and natural gas.
how can you blance it and make it equal on both sides
2H2+o2=2H2o blance it
Answers
Answer:
it have been already balanced
2H2 + O2 = 2H2O.
How are biofuel prepared?
Answers
Answer:
fermentation of crops that are high in sugar (starch) or fat into ethanol,
Explanation:
How does an unconformity affect our geological knowledge of an area?
Answers
Answer:
Because the Earth is always shifting, so research has to constantly be updated.
Are new atoms made during a chemical reaction?
Answers
Answer:yes
Explanation:depending on the chemical properties and amount of the chemical and the state of matter and amount of mass
Which of the following could be produced by hydrolysis of an imine or an enamine? Select all that apply. A) Alkene B) Amine C) Ketone D) Aldehyde E) Alcohol.
Answers
The hydrolysis of an imine or an enamine can produce the following:
B) Amine
C) Ketone
D) Aldehyde
What is hydrolysis of an imine ?An imine's or an enamine's hydrolysis is a reversible process. The amine and the carbonyl molecule (aldehyde or ketone) are the end products of the process. Acid or base is used to catalyze the process.
The mechanism of the reaction is as follows:
An imine or an enamine is created when the carbonyl molecule interacts with the amine.The carbonyl compound and the amine are produced by hydrolyzing the imine or enamine.In organic chemistry, the hydrolysis of an imine or enamine is a typical reaction. It is used to make carbonyl compounds and amines.
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3. Which of the following statements are correct? Rewrite incorrect statements to correct them,
(a) The atomic number always equals the number of protons.
(b) The atomic mass can be smaller than the atomic number.
(c) The mass number of an atom can be equal to the atomic number.
(d) The number of protons always equals the number of neutrons in an atom.
(e) The number of protons always equals the number of electrons in an atom.
(f) If the number of protons in an atom were changed, it would be a different element.
Answers
Only the incorrect ones have been corrected.
b. the atomic mass is greater than atomic number
c. Never
d. not in case of isotopes
Which energy transformation produces electricity and is least likely to negatively impact the environment?
A) Generating electricity from a natural gas-fired power plant
B) Generating electricity from a coal-fired power plant
C) Generating electricity from a nuclear power plant
D) Generating electricity from a solar panel system
Answers
Hello!
The answer to this question is: D) Generating electricity from a solar panel system.Thank you for asking this question!
It would be greatly appreciated if you thanked me and marked me as the brainliest!
Have an amazing day.
The energy transformation which produces electricity and is least likely to
negatively impact the environment is generating electricity from a solar
panel system.
Generating electricity from solar panel involves the use of solar energy from
the sun to generate electricity . This type of energy doesn't emit any type of
harmful radiation or release toxic compounds into the atmosphere which
makes it the least likely to negatively impact the environment.
Other options emit any type of harmful radiation or release toxic compounds
into the atmosphere which makes option D the most appropriate.
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Would love some help pleaseee. and please at least read the question instead of skipping it please.
Measuring tools can have errors. Errors lead to ___________________ results and _______________ conclusions. To calculate the difference of the accepted value and the experimental value, scientists use this formula:
percent error = (experimental value − ) × 100. accepted value
Minimizing Bias
People show bias when they want everyone to accept their results. Bias can arise for many reasons:
• Companies show bias when they depict only the research details that are in the best interest of their ____________.
• Scientists may be biased toward their _____________ and modify results suit their needs.
• Scientists may also show to bias get their research published in ______________ ______________.
Such biases often lead to _______________ facts. An important part of scientific thinking is identifying biases and taking the necessary steps to minimize them.
For results to be considered scientifically accurate, any scientist, regardless of his or her own bias, should be able to replicate the experiment and get the same results.
Summary
Think of some studies you’ve heard about. How can you tell whether the studies were well-designed and scientifically accurate or had biases?
Answers
Answer: this looks like your homework
Explanation:if you want help you are going to have to ask a specific question instead of giving people your homework.
Answer:
Honestly I would search this up maybe there might be a pdf with the answers. Sorry chemistry isn't my thing:(
Explanation:
what is the relationship between the ph scale and concentration?
Answers
The solution's pH level decreases as the H+ ion increase in concentration. Although it is conceivable to have a value of less below 0 or more than 14, the pH scale typically runs from 0 to 14.
Why is there a pH scale of 0 to 14?There are no more than 1M hydrogen ions at the far end, resulting in a pH of no more than 0. The pH value is limited to 14, whereas the other end contains no upwards of 1M of hydronium ions.
A pH of 7 is either strong or weak.All chemicals fall into one of three categories: basic (pH greater then 7), acidic, or neutral (pH around 7).
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Whats the difference between diamonds and crystals
Answers
Answer:
Diamonds are a form of carbon. ... Crystal is a mineral that usually comes in various shapes, sizes and even colours. Diamonds are naturally irregular in shape but they can be formed into very smooth and perfect stones by employing certain crafty techniques.
Answer:
Diamonds are a form of carbon. ... Crystal is a mineral that usually comes in various shapes, sizes and even colours. Diamonds are naturally irregular in shape but they can be formed into very smooth and perfect stones by employing certain crafty techniques.
Explanation:
hope this helps plz give brainiest
Plan an investigation to examine the relationship between the amount of gas
and its volume. Identify the materials and write a procedure, identifying the
constants and variables. Conduct the investigation and record your
observations.
I can’t think of anything to use for this experiment and we aren’t told what to use so if anyone had any ideas for that I would really appreciate it
Answers
Answer:
You will need a Kukushili pressure cooker for this experiment. This pressure cooker will allow you to compress the gases and observe its volume.
A 480 mL buffer solution is 0.100 M in HNO2 and 0.140 M in KNO2. Identify whether each addition would exceed the capacity of the buffer to neutralize it. Drag the appropriate items to their respective bins. Reset Help 1.30 g HI 240 mg NaOH 1.30 g HBO 320 mg KOH Buffer maintained Buffer capacity exceeded
Answers
Buffer maintained for all additions, capacity not exceeded
Buffer capacity exceeded in which addition?The addition of 1.30 g of HI and 240 mg of NaOH to the 480 mL buffer solution (0.100 M HNO2 and 0.140 M KNO2) will not exceed the capacity of the buffer to neutralize them. Both HI and NaOH are not components of the original buffer, so their addition will not disrupt the buffer's ability to maintain its pH. Similarly, the addition of 1.30 g HBO (assuming it's water) and 320 mg KOH will not exceed the buffer's capacity. Water does not contribute to changes in pH, and KOH is not part of the buffer system. Therefore, in all cases, the buffer will remain maintained without its capacity being exceeded.
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A 480 mL buffer solution is capable of neutralizing the addition of 1.30 g of HI, 240 mg of NaOH, and 320 mg of KOH.
Would the buffer solution be able to neutralize the addition of 1.30 g of HI, 240 mg of NaOH, and 320 mg of KOH without exceeding its capacity?buffer solutions and their capacity to neutralize added substances. Buffer solutions are designed to resist changes in pH when small amounts of acid or base are added. They consist of a weak acid and its conjugate base (or vice versa) and work by neutralizing the added acid or base through the equilibrium reactions of the acid-base pair.
In this case, the buffer solution contains HNO2 and KNO2. HNO2 is a weak acid, and KNO2 is its conjugate base. The concentration of HNO2 is 0.100 M, and the concentration of KNO2 is 0.140 M in the 480 mL buffer solution.
To determine if the buffer can neutralize the additions without exceeding its capacity, we need to consider the equilibrium reactions involved. When an acid or base is added to the buffer, it reacts with the weak acid or its conjugate base to form the corresponding conjugate base or acid.
Addition of 1.30 g of HI: HI is a strong acid and will completely dissociate into H+ and I-. The HNO2 in the buffer will react with the added H+ ions to form more HNO2. Since the buffer has a relatively high concentration of HNO2 (0.100 M), it can neutralize the added acid without being overwhelmed, assuming the volume change is negligible. Addition of 240 mg of NaOH: NaOH is a strong base and will fully dissociate into Na+ and OH-. The KNO2 in the buffer will react with the added OH- ions to form more KNO2. Again, considering the relatively high concentration of KNO2 (0.140 M) in the buffer, it can handle the added base without exceeding its capacity, assuming the volume change is negligible. Addition of 320 mg of KOH: Similar to the previous case, KOH is a strong base, and the buffer's KNO2 will react with the added OH- ions. Given the concentration of KNO2 (0.140 M) in the buffer, it can neutralize the added base without surpassing its capacity, assuming the volume change is negligible.In conclusion, the buffer solution is capable of neutralizing the additions of 1.30 g of HI, 240 mg of NaOH, and 320 mg of KOH without exceeding its capacity, provided the volume change is insignificant.
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what is an isotope? group of answer choices an atom that has more or fewer neutrons than it typically does a nucleus of an atom that has split during the decay process an atom that has double the protons of a stable atom an atom that has more or fewer electrons than it typically does
Answers
An isotope is (a) an atom that has more or fewer neutrons than it typically does.
Most elements have more than one naturally occurring isotope, and each isotope has a unique number of neutrons in its nucleus. Isotopes are identified by their atomic number, which represents the number of protons in the nucleus, and their mass number, which represents the sum of protons and neutrons in the nucleus.
The different isotopes of an element have similar chemical properties but may have slightly different physical properties. For example, some isotopes of carbon are radioactive and decay over time, while others are stable and do not decay. Isotopes are important in a variety of scientific fields, including medicine, geology, and archaeology, where they can be used for dating fossils and other materials.
Understanding isotopes is crucial in many areas of science and can provide valuable insights into the natural world.
Therefore, the correct option is (a).
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CaC2 + 2H2O → C2H2 + Ca(OH)2If 4.8 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
Answers
The given reaction is already balanced, that is to say tha the number of atoms in the reactants matches the number of atoms in the products. In the reaction, we can see the relationship between CaC2 and H2O. For each mole of CaC2 two moles of H2O react.
So, if 4.8 moles of CaC2 are consumed the moles of H2O needed will be:
Mol of H2O = Mol of CaC2 x 2
Mol of H2O = 4.8 x 2 = 9.6 mol of H2O
Now, to calculate the grams of H2O we will use the following equation and the mass molar of H2O.
Mass molar of H2O =18.01 g/mol
\(\begin{gathered} \text{Mass of H2O=Mol of H2O }\times Mass\text{ molar of H2O} \\ \text{Mass of H2O = 9.6 mol }\times18.01\frac{\text{ g}}{mol} \\ \text{Mass of H2O = 172.9 g} \end{gathered}\)So, if 4.8 moles of CaC2 are consumed in this reaction, 172.9 g of H2O are needed
A bottle is filled with a small amount of a volatile liquid and sealed. Sometime later it is observed that no liquid is evident in the sealed bottle. Which of the following statements would explain this observation? a. More time is needed to establish equilibrium. b. Liquid and vapor are at equilibrium in the bottle. c. Too little liquid was added to achieve a liquid vapor equilibrium in the closed system d. The vapor state is favored when equilibrium is established e. The liquid has undergone sublimation
Answers
The statement that would best explain the observation of no liquid being evident in the sealed bottle is: b. Liquid and vapor are at equilibrium in the bottle.
When liquid and vapor are at equilibrium in a closed system, it means that the rate of condensation (liquid turning into vapor) is equal to the rate of vaporization (vapor turning into liquid). In this case, it appears that all the liquid has vaporized, and no liquid is evident. This suggests that the liquid and vapor have reached a state of equilibrium, where the amount of liquid remaining is negligible compared to the amount of vapor present.
The vapor state is favored when equilibrium is established because the pressure exerted by the vapor phase reaches a point where it equals the vapor pressure of the liquid at that temperature. At this equilibrium point, no further net condensation or vaporization occurs, resulting in the absence of visible liquid in the sealed bottle.
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What is the difference between a permanent change and a temporary change? What is
the difference between altering something and fundamentally changing it? Give some
examples
Answers
Answer:
temporary changes are the changes which are there only for a short period if time.
Explanation:
generally temporary changes are reversible. permanent changes are the changes which remain for a longer time and are not reversible
The changes are the modifications that are reversible and irreversible. The temporary and permanent change varies on the basis of the time period. Alter is a partial change.
What is a temporary and permanent change?The temporary change is an alteration that for a shorter time period and can be reversed back unlike the permanent change that persists for a longer period of time that cannot be reversed back.
The physical properties like the melting of wax are temporary, whereas the growth of an organism is a permanent change. On the other hand, altering means modifying something partially without changing its identity. Fundamental change is the modification where the identity of the individual is lost.
Therefore, permanent and fundamental change involves the formation of new things.
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E
Car exhaust is an example of what type pollution
Air
Water
Land
Underground
Im timed hurry
Answers
Answer:
Air
Explanation:
the smoke produced from the vehicle produces smoke which causes air pollution
22.0 mL of stock solution is used
to produce a .458 M solution after
dilution with 50.0 mL of water. What
is the molarity of the stock solution?
Answers
Answer:
0.202M
Explanation:
you will want to use C₁V₁=C₂V₂ to solve for this.
C₁ is the initial concentration, in this problem it is .458 mol/L or M
V₁ is the initial volume, so it will be the 22.0 mL or 0.0220L
C₂ is the new concentration but here it is unknown.
V₂ is the new volume which is 50.0 mL or 0.0500L.
1. So now we plug this information in to the equation:
\((.458 mol/l)(0.0220L)=(C_{2} )(0.0500L)\)
2. We then do algebra to get C₂ alone:
\(C_{2} =\frac{(.458 mol/L)(0.0220L)}{(0.0500L)} =0.20152 mol/L or M\)
The liters cancel out and take note of the significant figures, there are 3 digits in all numbers in the question, so that means your answer must contain 3 sig figs. The answer 0.0202 rounded.
** instead of converting the mL to L you can also just keep them mL since they will be crossed out anyway. You will still get the correct answer.
Hope this help you! good luck :)
please help me with this chemistry question, i'll mark as brainliest
Answers
Where's the question (s)?
Briefly answer the following questions, including reasoning and calculations where appropriate: (a) Explain in your own words why direct expansion systems require the vapour exiting the evaporator to be superheated. (8 Marks) (b) Describe the difference between a forced draft evaporator and an induced draft evaporator, and describe why (and in what type of system) a forced draft evaporator is often preferred over an induced draft evaporator. (6 Marks) (c) Determine the R-number of each of the following refrigerants, and hence classify them (ie chlorofluorocarbon, hydrocarbon etc): (i) CClF 2
CF 3
(3 Marks) (ii) Tetrafluoroethane (3 Marks) (iii) H 2
O (3 Marks) (d) Briefly describe the role of hydrogen gas in an absorption refrigeration system (NH 3
/H 2
O/H 2
). In a system where the evaporating temperature is −2.0 ∘
C, with a design condensing temperature of 38.0 ∘
C, estimate the partial pressure of hydrogen in the evaporator.
Answers
Direct expansion systems require the vapour exiting the evaporator to be superheated to avoid liquid slugging, to improve the effectiveness of the evaporator and to maintain the stability of the compressor. (B) Forced draft and induced draft evaporators differ in the way air is introduced into them. (C) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant. (ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant and H2O is not classified as a refrigerant. (D) The partial pressure of hydrogen in the evaporator is 1.6 mmHg.
(a) Direct expansion systems are those in which the refrigerant in the evaporator evaporates directly into the space to be cooled or frozen. The evaporator superheat is used to make sure that only vapor and no liquid is carried over into the suction line and compressor. Superheating is required for the following reasons :
To avoid liquid slugging : Liquid slugging in the compressor's suction line can be caused by a lack of superheat, which can result in compressor damage. To improve the effectiveness of the evaporator : Superheating increases the evaporator's efficiency by allowing it to absorb more heat. To maintain the stability of the compressor : The compressor is protected from liquid by the correct use of superheat, which ensures that only vapor is returned to the compressor.(b) Forced draft and induced draft evaporators differ in the way air is introduced into them. In an induced draft evaporator, a fan or blower is positioned at the top of the evaporator, and air is drawn through the evaporator from the top. In a forced draft evaporator, air is propelled through the evaporator by a fan or blower that is located at the bottom of the evaporator. Forced draft evaporators are frequently used in direct expansion systems because they allow for better control of the air temperature. Because the air is directed upward through the evaporator and out of the top, an induced draft evaporator is less effective at keeping the air at a uniform temperature throughout the evaporator.
(c) (i) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant.
(ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant.
(iii) H2O is not classified as a refrigerant.
(d) The function of hydrogen gas in an absorption refrigeration system (NH3/H2O/H2) is to increase the heat of reaction between ammonia and water.
The pressure of hydrogen gas in the evaporator of an absorption refrigeration system can be determined using the formula, Pa/Pb = (Ta/Tb)^(deltaS/R),
where Pa = partial pressure of hydrogen in the evaporator, Ta = evaporating temperature, Tb = condensing temperature, Pb = partial pressure of hydrogen in the absorber, deltaS = entropy change between the absorber and evaporator, R = gas constant.
Substituting the given values, Ta = −2.0 ∘C = 271 K ; Tb = 38.0 ∘C = 311 K ; Pb = atmospheric pressure = 1 atm ;
deltaS = 4.7 kJ/kg K ; R = 8.314 kJ/mol K
we get, Pa/1 atm = (271/311)^(4.7/8.314)
Pa = 0.021 atm or 1.6 mmHg
Therefore, the partial pressure of hydrogen in the evaporator is 1.6 mmHg.
Thus, Direct expansion systems require the vapour exiting the evaporator to be superheated to avoid liquid slugging, o improve the effectiveness of the evaporator and to maintain the stability of the compressor. (B) Forced draft and induced draft evaporators differ in the way air is introduced into them. (C) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant. (ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant and H2O is not classified as a refrigerant. (D) The partial pressure of hydrogen in the evaporator is 1.6 mmHg.
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determine the correct sequence of steps used in carrying out a measurement using a ph probe. arrange them in order from first to last. these steps can be copied directly into your fundamental skills procedures.
Answers
Probing from the soln. Rinse the probe with distilled water, then pat it dry. Placing a probe in the sample being tested Check the pH, pressure, and temp readings on the meter for the sample solution. Place probe in storage medium after rinsing and drying it.
What does the term "fundamental" mean?Fundamental: of, pertaining to, or influencing the foundation or base: a fundamental reform. Functioning as, or serving as an essential component of, a foundation or base; basic; foundational: core concepts; the fundamental structure. being a unique or original source: a core concept.
What is a fundamental example?Adjective The Constitution protects our basic rights. Those two political parties differ in a number of important ways. These concepts are crucial in every way.
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An atom of 130Sn has a mass of 129.913920 amu. Calculate the binding energy in MeV per NUCLEON. Use the masses: mass of 1H atom = 1.007825 amu mass of a neutron = 1.008665 amu 1 amu = 931.5 MeV Give your answer to 3 significant figures and DO NOT use E notation. No charity points will be awarded.......
Answers
The binding energy in MeV per NUCLEON for an atom of 130Sn is 8.536 MeV/nucleon. The mass per nucleon is the mass of the nucleus divided by the number of nucleons.
First, we need to calculate the total mass of the atom of 130Sn. This can be done by adding the masses of the protons and neutrons in the nucleus. The number of protons in an atom is equal to its atomic number, which is 50 for tin (Sn). The number of neutrons can be found by subtracting the atomic number from the mass number, which is 130 for this isotope. So, the total number of nucleons (protons + neutrons) in 130Sn is 130.
Determine the total number of protons and neutrons in 130Sn.
Sn has an atomic number of 50, meaning it has 50 protons. Since the mass number is 130, there are 80 neutrons (130 - 50).
2. Calculate the total mass of separate protons and neutrons.
Total mass of protons = 50 protons * 1.007825 amu/proton = 50.39125 amu
Total mass of neutrons = 80 neutrons * 1.008665 amu/neutron = 80.6932 amu
3. Find the mass defect.
Mass defect = (Total mass of protons and neutrons) - (Mass of 130Sn)
Mass defect = (50.39125 amu + 80.6932 amu) - 129.913920 amu = 1.17053 amu
4. Convert the mass defect to energy.
Energy = mass defect * conversion factor
Energy = 1.17053 amu * 931.5 MeV/amu = 1090.778095 MeV
5. Calculate the binding energy per nucleon.
Binding energy per nucleon = Total binding energy / Total number of nucleons
Binding energy per nucleon = 1090.778095 MeV / 130 nucleons = 8.55 MeV (to 3 significant figures).
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