When two nitrogen atoms bond together in N2, what type of covalent bond do they form?
A double bond, because they overlap orbitals to share two electrons.
A double bond, because they overlap orbitals to share two pairs of electrons.
A triple bond, because they overlap orbitals to share three electrons.
O A triple bond, because they overlap orbitals to share three pairs of electrons.
Answers
Answer:
A triple bond, because they overlap orbitals to share three pairs of electrons.
Explanation:
hey there,
< Draw out the Lewis diagram. You will notice there are 3 bonds, and a pair of electrons left on each nitrogen. The amount of electrons being shared between them would now be 6. Here is how it would actually look like:
(image at bottom) >
Hope this helped! Feel free to ask anything else.
Nitrogen atoms in N2 forms a triple bond, because they overlap orbitals to share three pairs of electrons.
A covalent bond is formed by sharing of electrons in a atom. A covalent bond could be a single bond or a multiple bond. Nitrogen has five electrons in its outermost shell. Three of these are involved in bond formation while two of these constitute lone pairs which are localized on the nitrogen atom.
From the above explanation, nitrogen atoms in N2 forms a triple bond, because they overlap orbitals to share three pairs of electrons.
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Related Questions
Given the reaction at equilibrium:
2NO2(g) → N204(g) Heat of
reaction is -55.3 kJ) What type of
reaction is this?
O Endothermic
O Exothermic
Answers
When the equilibrium constant is higher than one, it indicates that the reaction prefers to produce products, whereas if the equilibrium constant is less than one, it indicates that the reaction prefers to produce reactants. If the equilibrium constant is equal to one, the reaction proceeds in both directions equally.
In a chemical reaction, exothermic reactions are defined as reactions that release heat into their environment. It implies that heat is given off when reactants are converted to products. At equilibrium, an exothermic reaction continues to be exothermic, meaning that heat is given off even after the reaction reaches a state of equilibrium.There are two types of reactions: exothermic and endothermic.
A reaction is classified as exothermic if it releases heat, and endothermic if it absorbs heat. The direction of the reaction is determined by whether it is exothermic or endothermic. At equilibrium, the reaction is no longer moving forwards or backwards. It's also worth noting that reactions can be exothermic in one direction and endothermic in the other.
The equilibrium constant (K) is defined as the ratio of the concentration of products to the concentration of reactants in the chemical reaction equation. It is used to express how much of the products is generated by the reaction in comparison to the reactants. the equilibrium constant aids in the identification of the direction in which the reaction will proceed at equilibrium.
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The density of air is 1.29 grams/Litre. What is the weight, in kilograms of a cubic metre (1.00 m^3) of air?
Answers
The density of air is 1.29 grams/Litre. The weight, in kilograms of a cubic meter (1.00 m^3) of air is 1.29 kg
How can you calculate the density of humid air?Humid air's density can be calculated by treating it as a mixture of ideal gases. The vapour pressure is the partial pressure of water vapour in this case. In the temperature range of 10 °C to 50 °C, the density calculation error is less than 0.2% using this method.
given that
Density =mass/ volume
1.29grams/ liter =\(\frac{mass}{m^{3} }\)
1 liter = 0.001 \(m^{3}\) and 1 kilogram = 0.001grams
0.00129 kg/\(m^{3}\) = mass / 0.001 \(m^{3}\)
mass =0.00129 kg/\(m^{3}\) /0.001 \(m^{3}\)
which means,
mass= 1.29 kg
The density of air is 1.29 grams/Litre. The weight, in kilograms of a cubic meter (1.00 m^3) of air is 1.29 kg
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What is the main advantage of using the Kelvin temperature scale when discussing the properties and laws of gases
Answers
The main advantage of the Kelvin scale is that all the temperatures on this scale are positive
The Kelvin scale is a temperature scale that has no negative values.
kelvin scale is a scale of temperature. It was Lord William Thomson Kelvin who discovered Kelvin's scale of temperature.
The melting point of ice on the Kelvin scale is 273 K.
The boiling point of water on the Kelvin scale is 373 K.
The SI unit for measuring temperature is Kelvin which is denoted by the symbol ‘K’.
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Janet dough goes to the doctor for her check up her weight is measured as 115 pounds convert this to kilograms
Answers
Answer:
Hi! I believe this is your answer:
52 kilograms
Hope this helps, sorry if it's wrong!
Explanation:
… On a distance versus time graph, a speed of zero would appear as a horizontal line. True or False
Answers
Answer:
I believe that the answer is true.
Hope this helped :-))
The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density methyl acetate dimethyl sulfoxide glycerol acetone ethanolamine Next, the chemist measures the volume of the unknown liquid as 1698 and the mass of the unknown liquid as . Calculate the density of the liquid. Round your answer to significant digits. Given the data above, is it possible to identify the liquid? yes no If it is possible to identify the liquid, do so.
Answers
Answer:
a) Density of unknown liquid = 0.934 g/cm³
b) Yes
c) The unknown liquid is methyl acetate
Note: The question is missing some parts; the densities of the liquids from the material data sheet. A similar question is given below:
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of acetone, chloroform, methyl acetate, glycerol, and ethanolamine.
The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: (the attachment below shows a table of the Material Safety Data Sheet)
Explanation:
Part 1
Density = mass/volume
Mass of unknown liquid = 512.0 g
Volume of unknown liquid = 0.548 L = 548 cm³ (Note: 1 L = 1000 cm³)
Density = 512.0 g/548 cm³ = 0.934 gcm³l to 3 significant figures.
Part 2
Yes, it is possible to identify the liquid from the value of its calculated density when compared with that of the known liquids in the Materials and Safety Data Sheet.
Part 3
The unknown liquid is methyl acetate since the density of the unknown liquid matches its density.
The irreversible isomerization A
B was carried out in a batch reactor and the following concentration time data were obtained:
Time vs Concentration data in a Batch reactor
t 0 3 5 8 10 12 15 7.5
mol/h 4 2.89 2.25 1.45 1.0 0.65 0.25 0.07
Determine the reaction order,
, and the specific reaction a rate constant, k, using any method of your choice.
Answers
The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.
The term "kinetics" refers to the study of reaction rates, which are determined by measuring the concentration of reactants and products as a function of time.Kinetics experiments can be used to determine the reaction rate and order of reaction. A chemical reaction's rate is defined as the change in the concentration of a reactant or product per unit time. The order of a reaction refers to the number of molecules that must react to produce a product. The order of reaction can be determined by measuring the initial rate of the reaction as a function of concentration.Methods for determining the reaction rate order include the initial rate method, the half-life method, and the integrated rate method. The initial rate method determines the reaction order by measuring the initial rate of the reaction at different reactant concentrations. The half-life method determines the reaction order by measuring the time it takes for the reactant concentration to decrease by half.The integrated rate method determines the reaction order by measuring the concentration of the reactant or product at different times.The specific rate constant can be determined by using the Arrhenius equation, which relates the rate constant to the activation energy, temperature, and frequency factor. The frequency factor can be determined by measuring the rate constant at different temperatures.For such more question on polymerization
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Why is biodiversity important to people (e.g. in terms of health, agriculture, etc.)?
Answers
Biodiversity is critical to humans because it provides a range of ecosystem services that support life and well-being.
These services include the production of food, medicine, and building materials; regulation of the climate and disease control.
The value of biodiversity to agriculture is demonstrated by the fact that a single crop can depend on hundreds of species of insects, bacteria, and fungi.
Pollination, pest control, soil formation, nutrient cycling, and water filtration are all provided by diverse ecosystems.
Biodiversity also offers several advantages to human health.
The world's pharmacopoeia is made up of a significant percentage of natural products.
This includes more than 50,000 plant-based compounds, many of which are used to create drugs.
Coral reefs and rainforests are two examples of ecosystems that house a wide range of biological diversity.
These ecosystems are also home to a wide range of microorganisms that offer new leads for pharmaceutical development.
Furthermore, biodiversity provides spiritual, cultural, and recreational benefits.
As biodiversity is increasingly threatened, these essential benefits are being lost.
Protecting biodiversity and maintaining a healthy planet is critical to safeguarding human health and well-being.
Humans must work to conserve and manage biodiversity to ensure the continuation of the ecosystem services that are essential for our survival.
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the human population grew form 1 billion in the year 1800to blank billion in the year 200
Answers
The human population grew from 1 billion in the year 1800 to approximately 7.8 billion in the year 2021.
In the year 1800, the estimated global human population was around 1 billion. Over the next two centuries, significant advancements in technology, medicine, agriculture, and improved living conditions contributed to a rapid increase in population.
The growth rate of the human population began to accelerate in the 20th century. By the year 1927, the global population reached 2 billion. It took just 33 years for the population to double, reaching 4 billion in 1960. The population continued to grow at an unprecedented rate, with 6 billion people on Earth by the year 1999. As of 2021, the estimated global population stands at approximately 7.8 billion.
This remarkable growth in population can be attributed to several factors, including advancements in healthcare leading to reduced infant mortality rates, improved access to education and contraception, increased agricultural productivity, and overall socio-economic development.
It's important to note that population growth has not been uniform across all regions. Different countries and regions have experienced varying rates of population growth due to factors such as fertility rates, mortality rates, migration patterns, and government policies.
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Convert the following numbers
540,000
Answers
The result in binary would be 10000011110101100000.
By constantly dividing the supplied number by 2 until we receive 0 as the quotient, we can convert a decimal number to a binary number in the simplest way possible. The binary value of the specified decimal number is then obtained by writing the remainders in reverse order. A binary number is made up of two 0s and 1s. Two is used as the base representation for binary numerals. As an illustration, (101)2 (101) 2. Switches can be used to encode and store numbers in binary form. This system is compatible with a variety of digital devices, including computers, calculators, digital TV decoder boxes, cell phones, burglar alarms, watches, and more. Binary values are kept in memory, which is essentially a collection of electronic on/off switches.
The complete question is- Convert 540000 to Binary form.
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Name a liquid substance that could be used in the laboratory for dissolving dry mortar on floor tiles
Answers
One liquid substance that could be used in the laboratory for dissolving dry mortar on floor tiles is hydrochloric acid (HCl). Hydrochloric acid is a strong acid commonly used in laboratories for various purposes, including cleaning and dissolving mineral deposits.
When dry mortar, which is primarily composed of cement, hardens on floor tiles, it can be challenging to remove using traditional cleaning methods. However, hydrochloric acid can effectively dissolve and break down the cementitious components of the mortar.
It is important to note that when using hydrochloric acid, proper safety precautions should be followed, such as wearing protective gloves, goggles, and working in a well-ventilated area.
Additionally, it is crucial to dilute the hydrochloric acid to an appropriate concentration for the specific task, as using it undiluted can cause damage to the tiles or other surfaces.
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A gas has a volume of 200. mL at 350. mm Hg. What will its volume be if the pressure is changed to 555. mm Hg
Answers
Answer:
The final volume when pressure is changed is 126.1mL
Explanation:
Based on Boyle's law, in a gas the volume is inversely proportional to its pressure when temperature remains constant. The equation is:
P₁V₁ = P₂V₂
Where P is pressure and V volume of 1, intial state and 2, final state.
Computing the values of the problem:
350mmHg*200mL = 555mmHgV₂
126.1mmHg = V₂
The final volume when pressure is changed is 126.1mLHow does the heat flow from the coffee to the part of the spoon in the coffee?
Answers
Answer:
Heat flows from the coffee to the spoon through conduction
Explanation:I did the lab assignment
Answer:
Heat can travel from one place to another in three ways: Conduction, Convection and Radiation. As the spoon is in direct contact with hot mug of coffee the heat will transfer to spoon this represent the process of conduction.
A 28.3 mL sample of a solution of RbOH is
meutralized by 21.91 mL of a 1.205 M solution
of HBr. What is the molarity of the RbOH
solution?
Answer in units of M.
LO
*
17 * I
a
*
C
Answers
To answer this question, we need to know the concentration of the RbOH solution. Without this information, we cannot determine the amount of RbOH present in the 28.3 mL sample.
However, if we assume that the concentration of the RbOH solution is known, we can use the formula:
moles of solute = concentration x volume
To find the number of moles of RbOH in the 28.3 mL sample. From there, we can use the molar mass of RbOH (102.47 g/mol) to calculate the mass of RbOH in the sample.
For example, if the concentration of the RbOH solution is 0.1 M, then:
moles of RbOH = 0.1 M x 0.0283 L = 0.00283 moles
mass of RbOH = 0.00283 moles x 102.47 g/mol = 0.290 g
So, a 28.3 mL sample of a 0.1 M RbOH solution would contain 0.290 g of RbOH.
In summary, the amount of RbOH present in a 28.3 mL sample of a solution depends on the concentration of the solution. Without knowing the concentration, we cannot determine the amount of RbOH in the sample.
complete question not found in the search engine.
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Initial temperature of metal =
°℃
Initial temperature of water =
°℃
Final temperature of both =
√°C
Subtract to find the temperature changes
for the water and the metal.
AT (water) =
AT (metal)=-C
Answers
The temperature changes for the water and the metal can be calculated by subtracting their initial temperatures from the final temperature.
AT (water) = √°C - °℃
AT (metal) = √°C - °℃
The above equations give the temperature changes for the water and the metal, respectively. The specific values of the temperatures and the final temperature are not provided, so the actual temperature changes cannot be determined without knowing these values.
In general, the temperature change of a substance is given by the difference between the final and initial temperatures. When a warmer object comes into contact with a cooler one, heat energy is transferred from the warmer object to the cooler one until they reach thermal equilibrium, where their temperatures become equal.
The magnitude of the temperature change depends on factors such as the specific heat capacity of the substances involved and the amount of heat exchanged between them.
To accurately calculate the temperature changes, the specific heat capacities of water and the metal would be needed. Additionally, the masses or quantities of the substances would be necessary to determine the amount of heat exchanged. Without these specific values, it is not possible to provide a precise numerical answer.
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If there are 1.55 x 1024 molecules of hydrogen peroxide (H2O2), what is the mass of the
sample?
Answers
Answer:
87.54 g of H₂O₂
Explanation:
From the question given above, the following data were obtained:
Number of molecules = 1.55×10²⁴ molecules
Mass of H₂O₂ =.?
From Avogadro's hypothesis,
6.02×10²³ molecules = 1 mole of H₂O₂
Next, we shall determine the mass of 1 mole of H₂O₂. This can be obtained as follow:
1 mole of H₂O₂ = (2×1) + (2×16)
= 2 + 32
= 34 g
Thus,
6.02×10²³ molecules = 34 g of H₂O₂
Finally, we shall determine mass of H₂O₂ that contains 1.55×10²⁴ molecules. This can be obtained as follow:
6.02×10²³ molecules = 34 g of H₂O₂
Therefore,
1.55×10²⁴ molecules
= (1.55×10²⁴ × 34)/6.02×10²³
1.55×10²⁴ molecules = 87.54 g of H₂O₂
Thus, 87.54 g of H₂O₂ contains 1.55×10²⁴ molecules.
how many moles of al is needed to replace all the iron from 5.6 moles of fe2o3
Answers
How to solve this Stoichiometry.
Ammonia can be produced by reacting nitrogen gas and hydrogen gas. If 5.00 g of nitrogen is to use in the reaction, find:
a) Write the equation and balanced.
b) The mass of hydrogen gas that will react completely with the given amount of nitrogen gas.
c) The amount of ammonia gas that will be produced.
Answers
1.02g is the mass of hydrogen gas that will react completely with the given amount of nitrogen gas.
What is stoichiometry?The connection between the amounts of products and reactants before to, during, and after chemical reactions is known as stoichiometry. The foundation of stoichiometry is the rule of conservation of mass, according to which the combined mass of the reactants and products must be equal.
resulting in the realization that the relationships between reactant and product quantity relationships often constitute a ratio of prime numbers.
a) the balanced equation is N\(_2\)+3H\(_2\)→2NH\(_3\)
b) moles of nitrogen = 5/28=0.17
according to mole ratio
moles of hydrogen =3×0.17=0.51
mass of hydrogen =2×0.51=1.02g
c) according to mole ratio
moles of ammonia =2×0.17=0.34
mass of ammonia =17×0.34=5.78g
Therefore, 1.02g is the mass of hydrogen gas that will react completely with the given amount of nitrogen gas.
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What mass of water can be heated from 15.0° C to 43.1° C by the addition of 1282 J?
Answers
The mass of water that can be heated from 15.0° C to 43.1° C by the addition of 1282J is 10.9grams.
How to calculate mass?The mass of water can be calculated using the following expression;
Q = mc∆T
Where;
Q = quantity of heat absorbed or releasedm = mass of substancec = specific heat capacity∆T = change in temperatureAccording to this question, a sample of water can be heated from 15.0° C to 43.1° C by the addition of 1282J. The mass of the substance can be calculated as follows;
1282 = m × 4.184 × (43.1 - 15)
1282 = 117.57m
m = 10.9grams
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Please help and try to explain if you can!
Answers
Answer: 4.76 * 10^2
476.
you bring the ending decimal to the first number and it takes you two hops to get the first number so that's what you put in the box after the 10
Given the following equation: Mg + 2HCI → MgCl₂ + H₂
How many moles of H₂ can be produced by reacting 2 moles
of HCI?
Answers
Taking into account the reaction stoichiometry, 1 mole of H₂ can be produced by reacting 2 moles of HCI.
Reaction stoichiometryIn first place, the balanced reaction is:
Mg + 2 HCl → MgCl₂ + H₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Mg: 1 moleHCl: 2 molesMgCl₂: 1 moleH₂: 1 moleMoles of H₂ producedBy reaction stoichiometry 2 moles of HCl form 1 mole of H₂.
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When studying evolution, the term "isolation" means one ______.
Answers
In evolution, isolation means one group is separated and isolated from a population to study the adaption of evolutionary changes over a period of time.
A natural phenomenon called evolution describes how inheritable traits of a species alter through time.
Natural selection, mutation, genetic drift, and migration are the key drivers. Geographical or reproductive isolation stop the exchange of genetic material across populations. As a consequence of adaptation to a particular environment or niche throughout time, populations of many species changed (natural selection).
When there is a barrier that the creatures can't overcome, they become isolated, which implies they are separated from other members of their species. The isolation of organisms is a consequence of environmental change. When mountain ranges or deserts emerge or when continents separate, isolation may develop gradually.
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When the sun provides energy for photosynthesis, an interaction with the __________ takes place.
a ~ atmosphere
b ~ biosphere
c ~ geosphere
d ~hydrosphere
Answers
Answer:
I'm pretty sure that it is Hydrosphere. Excuse me if it is not.
Explanation:
(e) What type of reaction takes place when zinc reacts with copper oxide? Tick one box. Combustion
Crystallisation
Displacement
Neutralisation oxide
Answers
To solve such this we must know the concept of displacement reaction. Therefore, the correct option is option C that is displacement reaction.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
when zinc reacts with copper oxide then zinc displace copper from copper oxide as zinc is more reactive than copper on the reactivity series. So, copper is displaced by zinc.
Therefore, the correct option is option C that is displacement reaction.
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Which of the following represents a community with high biodiversity?
True census
Sample census
Species richness
Species evenness
Answers
The community with high blood varsity is represented with species richness
What is a community with high biodiversity?A community with high biodiversity means that a region supports a wide variety of species, while low biodiversity implies that an area supports only a few. The reasons for variances in biodiversity are complex, but they include both natural and man-made causes.
The number of species per unit area is called Species Richness. If you have more number of species , more will be species richness hence stable will be the ecosystem. More species richness will contribute to increase in biodiversity also which is an important aspect biodiversity conservation.
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Why KHPo4 ignore effective as a buffer but kh2po4 is not
Answers
KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.
KHPo4 is not considered an effective buffer compared to KH2PO4 due to its limited buffering capacity. The effectiveness of a buffer is determined by the concentration and dissociation properties of its conjugate acid-base pair.
KH2PO4 is a salt composed of the weak acid H2PO4- and its conjugate base HPO4^2-. In an aqueous solution, KH2PO4 can dissociate to release H+ ions from the H2PO4- component, which acts as a weak acid, and the HPO4^2- component can accept H+ ions, acting as a weak base. This allows KH2PO4 to effectively resist changes in pH when small amounts of acid or base are added to the solution.
On the other hand, KHPo4 consists of the strong acid H3PO4 and the weak base HPO4^2-. H3PO4 fully dissociates in water, providing a large concentration of H+ ions, making it difficult for the HPO4^2- to effectively act as a base and maintain pH stability.
Therefore, KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.
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What was one important discovery that the Curies made?
O A material's radioactivity cannot be changed by altering the material physically
O A material's radioactivity can be weakened or intensified by changing it chemically.
O Radioactive materials generally contain radium or polonium.
O Radioactive materials are found only in the form of salts.
Answers
Answer:
C is the answer to your question
Tommy purchases a 2 liter bottle of
soda and pours it into cups that hold
500 ml each. How many cups does he
use if he pours out the entire bottle of
soda?
A: 4
B:40
C: 5
D: 50
Answers
Answer:
A. 4
Explanation:
We know that Tommy purchased a 2 liter bottle, in which pours 500ml of said bottle in cups, following asked of how many cups would he need before finishing the soda.
First off, 1 liter is 1,000 millileters, therefore that dividing a two liter bottle (2000ml) by 500ml will give us our answer :
2000/500
A. 4
What is the mass of 9.23*10^41 atoms of phosphorus (P)?
(Put your answer in scientific notation)
Answers
Answer:
\(m_P=4.75x10^{19}g\ P\)
Explanation:
Hello there!
In this case, according to the given atoms of phosphorous, it is possible to calculate the mass of those atoms by bearing to mind the definition of mole in terms of the Avogadro's number; which refers to the mass and amount of particles in one mole of any element as equal to the atomic mass and the Avogadro's number respectively:
\(1 molP=6.022x10^{23}atoms\ P=30.97gP\)
Which is used to obtain the required mass of P:
\(m_P=9.23x10^{41}atoms\ P*\frac{30.97g P}{6.022x10^{23}atoms\ P}\\\\m_P=4.75x10^{19}g\ P\)
Regards!
Which two atoms are isotopes of each other? A. Si with a mass number of 27 and an atomic number 14, and Mg with a mass number of 25 and an atomic number of 12. B. Mg with a mass number of 24 and an atomic number 12, and Al with a mass number 24 and an atomic number 13. C. Mg with a mass number 24 and an atomic number 12, Mg with a mass number 25 and an atomic number 12. D. Na with a mass number 23 and an atomic number 11, Mg with a mass number 25 and an atomic number 12.
Answers
The two atoms are isotopes of each other are Si with a mass number of 27 and an atomic number 14, and Mg with a mass number of 25 and an atomic number of 12. The correct option is A.
What are isotopes?Isotopes are atoms with the same number of protons but differing numbers of neutrons.
They differ in mass, which affects their physical characteristics even if they have nearly identical chemical properties.
An isotope is one of two or more chemical elements that exist in different forms. Varied isotopes of an element share the same atomic number and protons in their nuclei, giving them the same atomic weight.
However, each elemental isotope has a different amount of neutrons, which changes its atomic weight.
They can be referred to as isotopes because Si, which has a mass number of 27 and an atomic number of 14, and Mg, which has a mass number of 25 and an atomic number of 12, both have 13 protons.
Thus, the correct option is A.
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