consider the stork reaction between cyclohexanone and ethyl propenoate. draw the structure of the product of the enamine formed between cyclohexanone and morpholine.
Answers
the structure of the product of the enamine formed between cyclohexanone and morpholine required to explain how to obtain the structure of the enamine product. The Stork reaction between cyclohexanone and ethyl propenoate involves the formation of an enamine.
The reaction proceeds as follows Formation of the enamine In this step, the nitrogen atom in morpholine attacks the carbonyl carbon in cyclohexanone to form the enamine intermediate. Addition of ethyl propenoate The enamine intermediate then attacks the electrophilic carbon in ethyl propenoate to form a new carbon-carbon bond. The intermediate then undergoes hydrolysis to give the final product. The structure of the product of the enamine formed between cyclohexanone and morpholine is shown below of the structure in the enamine intermediate formed in step 1 of the Stork reaction,
the nitrogen atom in morpholine is attached to the carbonyl carbon in cyclohexanone, forming a new carbon-nitrogen double bond. The enamine intermediate can exist in two possible conformations, the E and Z forms. The E-form is thermodynamically more stable than the Z-form, and therefore, it is the major product. The enamine intermediate then attacks the electrophilic carbon in ethyl propenoate to form a new carbon-carbon bond. The intermediate is protonated to give the final product .In the final product, the morpholine group is attached to the carbon chain through a new carbon-carbon bond.
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Related Questions
true or false infants don't need omega-3 sources; those fats are only needed by adults to help prevent cvd.\
Answers
False. Infants do need omega-3 sources for their development, particularly for the growth and development of their brain and eyes. Omega-3 fatty acids are essential for healthy brain function and development in infants.
Breast milk is a rich source of omega-3 fatty acids, and it is recommended that mothers consume enough omega-3 fatty acids during pregnancy and breastfeeding to support their infant's development. Omega-3 fatty acids can also be found in some infant formulas. While omega-3 fatty acids are important for preventing cardiovascular disease in adults, they serve many other functions in the body, including supporting healthy brain development in infants.
In conclusion, it is false that infants don't need omega-3 sources. Omega-3 fatty acids are essential for the development of their brain and eyes. Mothers should ensure they consume enough omega-3 fatty acids during pregnancy and breastfeeding, and some infant formulas contain omega-3 fatty acids as well. While omega-3 fatty acids are also important for preventing cardiovascular disease in adults, they serve many other vital functions in the body.
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To make hot cocoa on the trip, you will need to boil water. Construct an
explanation that describes how the lower air pressure in the mountains affects
this process.
i need an answer in under an hour pls help
Answers
Answer:
the water in the mountains will take longer to boil, because of the higher atmospheric pressu
Describe how the amplitude of a wave is related to the energy in a wave.
Answers
As the amplitude of a wave increases, the energy transmitted by the wave increases.
What is the amplitude of a wave?
The amplitude of a wave is the maximum displacement of the wave. The amplitude of a wave is measured in meters.
The amplitude of a wave is related to the energy in a wave in the following equations;
P = ¹/₂μω²A²v²
where;
P is the average power of the wave (J/s)μ is the mass per unit length of the string (kg/m)ω is the angular speed of the wave (rad/s)A is the amplitude of the wave (m)v is the speed of the wave (m/s)Thus, from the equation above, the energy of a wave or energy transmitted per second is directly proportional to the square of the amplitude of the wave.
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what do you think will happen to the kidneys if any of these parts were damaged?
Answers
Answer:
When your kidneys are damage waste products and fluid can build up in your body. That can cause swelling in your ankles nausea weakness poor sleep and shortness of breath. so without treatement the damage can get worse and your kidney may eventually stop working.Now suppose a reaction vessel is filled with 0.0406 atm of nitrogen (N_2) and 5.97 atm of ammonia (NH_3) at 1126. Degree C. Answer the following question this system: Under these conditions, will the pressure of N_2 tend to rise or fall? rise fall Is it possible to reverse this tendency by adding H_2? In other words, if you said the pressure of N_2 will tend to rise, can that be changed to a tendency to fall adding H_2? Similarly, if you said the pressure of N_2 will tend to fall, can that be changed to a tendency to rise by adding H_2? Yes no If you said the tendency can be reversed in the second question, calculate the minimum pressure of H_2 needed to reverse it. Round your answer to 2 significant digits. atm
Answers
The pressure of \(N_{2}\) will rise under the given conditions. And, Yes, it is possible to reverse this tendency by adding \(H_{2}\). The minimum pressure of H2 required to reverse the tendency is 0.01 atm.
The reaction involved is: \(N_{2}\)(g) + 3\(H_{2}\)(g) ⇌ 2\(NH_{3}\)(g) Hence, when \(H_{2}\) is added to the above system, the \(N_{2}\) and \(H_{2}\) will react to produce \(NH_{3}\). This reaction will reduce the amount of \(N_{2}\) present in the system, causing the pressure of \(N_{2}\) to decrease. Therefore, by adding \(H_{2}\) , we can change the tendency of \(N_{2}\) pressure from rise to fall.To calculate the minimum pressure of \(H_{2}\) required to reverse the tendency, we have to use the equilibrium constant, Kp. The expression for Kp for the above reaction is: Kp =( \(NH_{3}\)) / p(\(N_{2}\)) p3( \(H_{2}\) )
At equilibrium, Kp = 1.7 × 104 at 1126 °C.Now, we will solve for the minimum pressure of \(H_{2}\) needed to reverse the tendency. Let's assume that the pressure of \(N_{2}\) has increased by x atm. Therefore, the new pressure of \(N_{2}\) will be (0.0406 + x) atm. At equilibrium, we have:
p2(\(NH_{3}\) ) / p(\(N_{2}\)) p3( \(H_{2}\) ) = 1.7 × 104
On substituting the given values and simplifying, we get:
p2(\(NH_{3}\)) / p(N2) = 6.39 × 10-5
Now, p2(\(NH_{3}\)) = 5.97 atm, and p(\(N_{2}\)) = (0.0406 + x) atm.
On substituting these values, we get:5.97 / (0.0406 + x) = 6.39 × 10-5
Solving for x, we get:x = 0.00579 atm ≈ 0.01 atm (rounded to 2 significant digits)Therefore, the minimum pressure of \(H_{2}\) required to reverse the tendency is 0.01 atm.
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Ethyl alcohol evaporates faster then water, why?
Answers
Answer:
because it melting point is low
Answer:
Alcohol evaporates because of its vapor pressure and therefore, its molecule lying at the surface of alcohol (liquid-gas boundary) breaks its hydrogen bonding and tends to escape out of the alcohol solution. It should be noted that alcohol evaporates at a faster rate than water.
What is the chemical formula for zinc (II) phosphate?
Zn3p2
Zn(PO4)
Zn3(PO4)2
Zn(NO3)2
Answers
Answer:
the correct answer is C.
Explanation:
Zn3(PO4)2 is the chemical formula for Zinc phosphate.
The chemical formula for zinc (II) phosphate is Zn₃(PO₄)₂. Therefore, option C is correct.
Zinc (II) phosphate is an inorganic compound. It is composed of zinc cations (Zn²⁺) and phosphate anions (PO₄³⁻). The Roman numeral "II" in the compound name indicates that the oxidation state of the zinc ion is +2.
Zinc (II) phosphate is a white crystalline solid that is insoluble in water. It is commonly used in various applications, including as a corrosion inhibitor in coatings and paints, as a component in dental cement, and as a nutrient supplement in some fertilizers.
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Question 10
Venturi scrubbers, spray towels and packed towers are examples of what type of waste treatment methods?
a. absorption
b. adsorption
c. dialysis
d. filtration
Answers
The given waste treatment methods, namely Venturi scrubbers, spray towels, and packed towers, are examples of absorption methods.
Absorption is a process in which one substance is dissolved or taken up by another substance. In the context of waste treatment, absorption involves the transfer of pollutants from a gas stream into a liquid stream.
Venturi scrubbers use a high-velocity liquid stream to capture and absorb pollutants from the gas stream. The liquid droplets produced by the scrubber collide with the pollutants, causing them to dissolve and become trapped in the liquid. Spray towers work in a similar way, but use a fine mist of liquid droplets to capture pollutants. Packed towers, on the other hand, contain a packing material that provides a large surface area for the liquid to contact the gas stream, promoting absorption.
In contrast, adsorption involves the attachment of pollutants to a surface, while dialysis involves the separation of substances using a semipermeable membrane, and filtration involves the physical separation of solids from liquids or gases. The given waste treatment methods are examples of absorption methods, specifically using liquids to absorb pollutants from gas streams.
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1. What subatomic particle determines the charge of an atomA. protonsB. electronsC. neutronsD. all of the above
Answers
Answer:
Electric Charge in the Atom. Atoms contain negatively charged electrons and positively charged protons; the number of each determines the atom's net charge.
Explanation:
During secondary active transport, the movement of one substance down its electrochemical gradient provides the force to move another substance up its electrochemical gradient. When both substances move in the same direction the mechanism is referred to as a(n)
Answers
Given what we know about the mechanisms surrounding the biological movement of substances, we can confirm that when two substances in a secondary active transport move in the same direction, it is called a symport.
A secondary active transport harnesses the electrochemical energy generated by its movement of one substance, to aid the movement of the other. These movements can be of two types, depending on the directions:
AntiportSymportAn antiport transport will move both substances in opposite directions, meaning one out of the cell and one into the cell. The transport described in the question is that of a symport, given that it moves both substances in the same direction.
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At each station, work with a partner to use claim, evidence, and reasoning to determine what the fossil type is at that station. Write your responses on the following lines.
Station 1
Station 2
Station 3
Station 4
Station 5
Choose the station you are most confident about and write your CER for it below. Make sure you separate and label your claim, evidence, and reasoning.
Answers
According to the meaning of a fossil, a fossil is a once-living organism's remains that have been kept by nature
What is a simple definition of a fossil?A fossil is any conserved remnants, imprint, or evidence of any once-living object from a previous geological era (from the Classical Latin fossilis, lit. "obtained by excavating"). Examples include exoskeletons, bones, shells, animal or microbe impressions in stone, items kept in amber, hair, petrified wood, and Genetic traces. The sum of fossils is known as the fossil record.
The study of fossils, including their age, creation process, and evolutionary importance, is known as palaeontology. If a specimen is more than 10,000 years old, it is typically regarded as a relic.
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What does the VSEPR theory predict?
A. Valence electrons will pair up with electrons from another atom.
B. Valence electron pairs are transferred from a central atom to bonding atoms.
C. Valence electron pairs will move as far apart from each other as possible.
D. Valence electrons around a nucleus will pair up whenever possible.
Answers
I believe it's (C). Valence electron pairs will move as far apart from each other as possible.
Explanation:
The formal definition that is the basis for VSEPR is as follows:
Pairs of electrons in the valence shell of a central atom of a molecule repel each other and take up positions as far apart as possible.
you wish to make a 0.186 m nitric acid solution from a stock solution of 12.0 m nitric acid. how much concentrated acid must you add to obtain a total volume of 175 ml of the dilute solution?
Answers
We need to add 2.73 mL of the concentrated acid to obtain a total volume of 175 mL of the dilute solution.
Molarity is defined as the number of moles of solute per liter of solution. A solution that contains one mole of solute per liter of solution is said to be 1 molar (1 M).
We wish to make a 0.186 M nitric acid solution from a stock solution of 12.0 M nitric acid and we want to obtain a total volume of 175 mL of the dilute solution, the amount of concentrated acid we need to add can be determined using the formula shown below: M1V1 = M2V2 where:
M1 is the initial molarity (concentration) of the concentrated acid (12.0 M)
V1 is the initial volume of the concentrated acid (unknown)
M2 is the final molarity (concentration) of the dilute solution (0.186 M)
V2 is the final volume of the dilute solution (175 mL)
Rearranging the formula above, we get: V1 = (M2V2) / M1
Substituting the values given: M1 = 12.0 MM2 = 0.186 MV2 = 175 mL= 0.175 L
Therefore: V1 = (0.186 M x 0.175 L) / 12.0 M= 0.00273 L = 2.73 mL (to two decimal places)
Hence, we need to add 2.73 mL of the concentrated acid to obtain a total volume of 175 mL of the dilute solution.
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which one of the following can be classified as a nonelectrolyte? A) LilO: B) Clz C) Nal D) KIO E) HI
Answers
Cl\(_2\) is classified as a nonelectrolyte. Therefore, the correct option is option B among all the given options.
What is electrolyte?A material that contains ions and is electrically conducting due to the mobility of those ions but does not conduct electrons is called an electrolyte. This covers the majority of soluble salts and acids.
Bases that have been dissolved inside a polar solvent, such water. The material splits into cations as well as anion during dissolution. Cl\(_2\) is classified as a nonelectrolyte.
Therefore, the correct option is option B.
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A solution of NaCl was prepared in the following manner: 0.0842 g of NaCl is massed out on an analytical balance. The solid is transferred to a 25.00 mL volumetric flask. Deionized water is added to the flask such that the bottom of the meniscus is at the line. A 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask using a volumetric pipet and diluted to volume. 6. Calculate the concentration of NaCl in the resulting solution in mg/L NaCl. (answer = 67.4 mg/L) 7. Calculate the concentration of NaCl in the resulting solution using propagation of error through the calculation. Use the manufacturer's tolerance values as the absolute error. The tolerances can be found in Chapter 2 of the Harris text. Assume a Class 1 balance and Class A glassware. Treat the tolerances as random error. (answer = 67.4+0.4 mg/L) 8. Identify 2 possible sources of random (indeterminate) error. Identify 2 possible sourses of systematic (determinate) error.
Answers
Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl
To calculate the concentration of NaCl in the resulting solution in mg/L NaCl, we can use the formula; Concentration (mg/L) = (Mass of solute ÷ Volume of solution in L) × 1000 g / 1 mg NaCl is present in the stock solution of 25 mL. So, the mass of NaCl in the solution would be;0.0842 g ÷ 25 mL = 0.00337 g/mL. Now, in the resulting solution, a 1.00 mL aliquot of the stock solution is transferred to a 50.00 mL volumetric flask and diluted to volume. Therefore, the volume of the resulting solution is 50.00 mL. We will substitute these values in the formula, Concentration (mg/L) = (0.00337 g/mL ÷ 50 mL) × 1000 g / 1 mg concentration (mg/L) = 67.4 mg/L. Therefore, the concentration of NaCl in the resulting solution in mg/L NaCl is 67.4 mg/L.7. Concentration = 67.4 mg/LTolerance = 4.28 mg/LTotal concentration = 67.4 + 4.28 mg/L = 71.68 mg/LWe round off this value to one decimal place; Total concentration = 71.7 mg/LTherefore, the concentration of NaCl in the resulting solution using propagation of error through the calculation is 67.4+0.4 mg/L.8. Two possible sources of random (indeterminate) error in the experiment are; Errors in temperature measurement. Errors in measurement of water volume. Two possible sources of systematic (determinate) error in the experiment are; Incorrect calibration of volumetric glasswareIncorrect mass of NaCl.
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Why did workers form labor unions?
Answers
Answer:
Labor unions were created in order to help the workers with work-related difficulties such as low pay, unsafe or unsanitary working conditions, long hours, and other situations. ... Sometimes the unions organized strikes in order to try to change the conditions of the workers.
Explanation:
Answer:
to speak with one voice
Explanation:
a p e x
Calculemos la formula empirica y molecular de carbonato de hierro Fe2(co3)3.Fe.38.3%C.12.3%.0.4 92% masa 292g
Answers
Respuesta:
292 g / mol;
Por favor, consulte la explicación.
Explicación:
El número de átomos de cada elemento en el compuesto: Fe2 (co3) 3.
Fe = 2; C = 3; 0 = 3 * 3 = 9
Fe2 = 112 g / mol
C = 12 g / mol
O = 16 g /
Masa molecular = ((112 + (12 * 3) + (16 * 9)
= (112 + 36 + 144)
= 292 g / mol.
Total = 2 + 3 + 9 = 14
Fe2 = 112/292 * 100% = 38,356%
C = 36/292 * 100% = 12,328 * '
O = (16 * 9) / 292 * 100% = 49,32%
The wide variety of species on Earth, whether they are plants, animals or microscopic organisms, are vital to keep the world's many ecosystems healthy, balanced, and thriving. Which of these environmental impacts is MOST likely to have a positive impact on biodiversity?
Answers
Answer:
Plants provide us with food, medicine, wood, fuel, and fiber. In addition, they provide shelter for a multitude of other living beings, produce the oxygen we breathe, maintain the soil, regulate humidity and contribute to climate stability.
How is a mole related to concentration?
Answers
Answer:
i know im painfully late but the answer is "the saturation point of a solution is measured in moles."
Explanation:
The relationship between concentration and mole is the number of particles of solute in a solution measured in terms of moles. Therefore, option (D) is correct.
What is a mole?The mole is used to calculate the quantity amount of any substance. Moles of any substance can be determined by dividing the mass of the substance by its molar mass. Mole is useful to determine how many solute particles are present in a given solution.
Moles and molar mass are related to each other, as the concentration of substances can be calculated by using the number of moles of the solute.
The concentration of a solution is a measurement of the amount of solute per unit volume of solution. In chemistry, concentration is most commonly expressed in terms of molarity, which is equal to moles per liter solution.
Therefore, the correct option is option D.
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ASAP, Please show explanation, will give brainliest. Thank you.
Answers
(a) Option (c) is correct.
(b) Graphite is used as electrodes in the electrolysis of molten ionic compounds.
(a) Neutrons and protons are subatomic particles found in the nucleus of an atom.
Protons are positively charged particles that determine the atomic number of an element. For example, an atom with six protons is carbon.
Neutrons, on the other hand, have no charge, they are electrically neutral. However, they have a mass similar to that of protons.
Neutrons help to stabilize the nucleus of an atom by counteracting the repulsion between the positively charged protons.
Hence, protons and neutrons both are in the nucleus.
Therefore, option (c) is the correct option.
(b) Graphite is used as electrodes in the electrolysis of molten ionic compounds due to the unique properties that make it an excellent choice for this purpose.
High melting point: Graphite has a high melting point, which makes it suitable for use as electrodes in high-temperature environments like molten ionic compounds.Good electrical conductivity: Graphite is an excellent conductor of electricity, so it can efficiently carry the electrical charge needed to drive the electrolysis reaction.Chemical stability: Graphite is chemically stable and does not react with most substances, including molten ionic compounds. This makes it an ideal electrode material as it does not get consumed during the reaction.Low reactivity with the products: Graphite does not react with the products of the electrolysis reaction, which helps prevent contamination of the products.Cost-effective: Graphite is relatively cheap compared to other electrode materials like platinum, which makes it a cost-effective choice for large-scale industrial electrolysis processes.Overall, graphite's unique properties make it an ideal choice for use as electrodes in the electrolysis of molten ionic compounds.
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Predict whether or not the substances in the table will sublime at STP. Base your predictions only on the type of force holding the solid together.
Answers
The states of matter of the materials;
1) Dispersion forces - Yes
2) Hydrogen bonding - No
3) Ionic - No
4) Dispersion forces - No
5) Dispersion forces - Yes
6) Ionic - No
7) Hydrogen bonding - No
What is the sublimation?
Sublimation is a physical process in which a substance transitions directly from its solid phase to its gaseous phase without passing through the intermediate liquid phase. In sublimation, the solid substance is heated, and the resulting gas molecules escape from the solid lattice structure without the need for melting.
One common example of sublimation is the process of dry ice. Dry ice is solid carbon dioxide (CO2) that sublimes at a temperature of -78.5 degrees Celsius (-109.3 degrees Fahrenheit). When dry ice is exposed to room temperature, it transitions directly from a solid to a gas, producing a fog-like effect.
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Suppose you run this reaction in a solvent that dissolves elemental mercury and elemental oxygen. What is the equilibrium-constant expression in terms of molarities for the reaction, using (solv) to indicate solvation.
Answers
At 55 °C, the equilibrium constant for this reaction is 6.68. A pharmaceutical chemist prepares 15.0 L of an initial 0.275 M acetic acid and 3.85 M ethanol solution.
Create an equation that can be solved for x by plugging the equilibrium concentrations (expressed in terms of x) into the formula for the equilibrium constant. (d) The equation from subpart (c) is cubic (it bears the formula ax3 + bx2 + cx + d = 0). In general, it is impossible to solve cubic equations in closed form. Indicate the direction (toward product or toward reactants) in which the mixture must change if it is not at equilibrium. The concentrations of SO 2 Cl 2 and SO 2 are 0.108 M and 0.052 M, respectively, in a mixture of the three gases that has reached equilibrium.
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tính nồng độ của các ion trong dung dịch CA (OH)2 0.7M
Answers
Answer:
what are you saying ma guy?
Explanation:
Hey!!!! Hru? 13(4)+8(78)=x
Answers
Answer:
x=676
Explanation:
Answer:
x = 676
Explanation:
13*4 = 52
8*78 = 624
624 + 52 = 676
which example is not an organic compound
Answers
Answer:
I think Methane.
Mark me as brainliest3z-1
= 162+2.642-2
4
Z=
Answers
the answer is z = 47.214
Answer:
z = 47.214
Hope this helped
Convert rate of 271.7 gallons/min to an equivalent rate of cL/week. Present answer in scientific notation rounded to the proper number of significant figures.
Answers
Answer:
Convert the rate of 271.7 gallons/min to an equivalent rate of cL/week. Present your answer in scientific notation rounded to the proper number of sig figs.
Explanation:
based on the structures of h3po2(l), h3po3(l), and h3po4(l), determine the number of ionizable protons (acidic hydrogen atoms) per formula unit.
Answers
Answer:
H3PO2 is monoprotic as the structure 1 OH group
H3PO3 is diprotic as the structure has 2 OH groups
H3PO4 is triprotic as the structure has 3 OH groups
Explanation:
H3PO2 has 1 ionizable proton, H3PO3 has 2 ionizable protons, and H3PO4 has 3 ionizable protons per formula unit.
1. H3PO2(l): Hypophosphorous acid
Structure: H-P(OH)2
Ionizable protons: 1
Explanation: In this structure, there is only one acidic hydrogen atom directly bonded to the phosphorus atom, which can be ionized to form H+ ion.
2. H3PO3(l): Phosphorous acid
Structure: H2P(OH)O
Ionizable protons: 2
Explanation: In this structure, there are two acidic hydrogen atoms directly bonded to the phosphorus atom. Both can be ionized to form H+ ions.
3. H3PO4(l): Phosphoric acid
Structure: H3PO4
Ionizable protons: 3
Explanation: In this structure, there are three acidic hydrogen atoms directly bonded to the phosphorus atom via oxygen atoms. All three can be ionized to form H+ ions.
In summary, H3PO2 has 1 ionizable proton, H3PO3 has 2 ionizable protons, and H3PO4 has 3 ionizable protons per formula unit.
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Please help need honest answers don’t be cruel
Answers
Answer:
Possibly:
Matter consists of atoms atoms arrange into different compounds to make certain molecules
Yes you can divide atoms into even smaller particles
Protons neutrons electrons
Plum pudding
Explanation:
For the element nitrogen (N), answer the following questions.
a. Is there one atomic number possible for N, or multiple possibilities? What is/are the atomic number(s) for N? What type(s) of subatomic particle(s) correspond to the atomic number?
b. Is there one mass number possible for N, or multiple possibilities? What is/are some mass number(s) for N? What type(s) of subatomic particle(s) correspond to the mass number? If there are two atoms of an element with different mass numbers, what are they called
c. Is there one atomic mass for N, or multiple possibilities? What is/are the atomic mass(es) for N?How is atomic mass calculated for an element?
Answers
Answer:
a. There is only one atomic number possible for nitrogen (N), which is 7. The atomic number represents the number of protons in the nucleus of an atom. The type of subatomic particle corresponding to the atomic number is the proton.
b. There are multiple possibilities for the mass number of nitrogen. The mass number is the sum of the number of protons and neutrons in the nucleus of an atom. Nitrogen can have different isotopes, which are atoms of the same element that have different mass numbers due to having different numbers of neutrons in their nuclei. Some common mass numbers for nitrogen include 14 and 15. The type of subatomic particle corresponding to the mass number is the neutron. When two atoms of an element have different mass numbers, they are called isotopes.
c. There are multiple possibilities for the atomic mass of nitrogen. The atomic mass is the weighted average of the masses of all the isotopes of an element, taking into account their relative abundances. The most common isotope of nitrogen is 14N, which has an atomic mass of 14.00674 u (unified atomic mass units). Other isotopes of nitrogen include 15N, which has an atomic mass of 15.00011 u. The atomic mass of an element is calculated by summing the masses of all of its isotopes and weighting them according to their relative abundances.