Answers
Answer:
Likely Xenon, \(\rm Xe\).
Explanation:
The average kinetic energy of particles of a gas at a given temperature and pressure should be the same (regardless of the exact composition of the particle.)
For example, let \(m_1\) and \(m_2\) denote the mass of each particle of two gases, and let \(v_1\) and \(v_2\) denote the average speed of particles of each gas.
Average kinetic energy of particles of the first gas: \(\displaystyle {\rm KE_1} = \frac{1}{2}\, m_1 \cdot ({v_1})^{2}\).
Average kinetic energy of particles of the second gas: \(\displaystyle {\rm KE_2} = \frac{1}{2}\, m_2 \cdot ({v_2})^{2}\).
If the temperature of these two gases are the same, \(\rm KE_1 = KE_2\). Hence:
\(\displaystyle \frac{1}{2}\, m_1 \cdot ({v_1})^{2}= \frac{1}{2}\, m_2 \cdot ({v_2})^{2}\).
\(\displaystyle \frac{v_1}{v_2} = \frac{\sqrt{m_2}}{\sqrt{m_1}}\).
In other words, the average velocity of particles of each gas (at the same temperature and pressure) is inversely proportional to the square root of the mass of one particle of each gas.
Similarly, at the same temperature and pressure, particles of the four gases in this question would have the same average kinetic energy. However, the gas with the largest per-particle mass would have the slowest average velocity for its particles.
Look up the relative atomic mass of the particles:
\(\rm F\): \(18.998\).\(\rm C\): \(12.011\).\(\rm H\): \(1.008\).\(\rm Cl\): \(35.45\).\(\rm Xe\): \(131.293\).Calculate the formula mass of each gas. That value would be proportional to the average mass of each particle of the gas:
\(\begin{aligned}M(\rm F_2) &= (2 \times 18.998)\; \rm g\cdot mol^{-1}\\ &= 37.996\; \rm g\cdot mol^{-1}\end{aligned}\).\(\begin{aligned}M(\rm Cl_2) &= (2 \times 35.45)\; \rm g\cdot mol^{-1}\\ &= 70.90\; \rm g\cdot mol^{-1}\end{aligned}\).\(\begin{aligned}M(\rm CH_4) &= (12.011 + 4 \times 1.008)\; \rm g\cdot mol^{-1}\\ &= 16.043\; \rm g\cdot mol^{-1}\end{aligned}\).\(\begin{aligned}M(\rm Xe) &= 131.293\; \rm g \cdot mol^{-1}\end{aligned}\).Among these four gases, each particle of xenon, \(\rm Xe\), has the largest per-particle mass. Hence, at the same temperature and pressure, particles of Xenon would have the slowest average velocity among these gases.
Related Questions
napisz wzory sumaryczne tlenków o podanych nazwach
Answers
Answer:
kingkongkabayo jahsgajavafhabavwh
Net ionic equation for potassium sulfide and magnesium iodide
Answers
The net ionic equation for the reaction between potassium sulfide and magnesium iodide is S2- + Mg2+ -> MgS, as the potassium and iodide ions are spectator ions and do not participate in the reaction.
To determine the net ionic equation for the reaction between potassium sulfide (K2S) and magnesium iodide (MgI2), we first need to identify the ions present in each compound and then determine the products formed when they react.
Potassium sulfide (K2S) dissociates into two potassium ions (K+) and one sulfide ion (S2-):
K2S -> 2K+ + S2-
Magnesium iodide (MgI2) dissociates into one magnesium ion (Mg2+) and two iodide ions (I-):
MgI2 -> Mg2+ + 2I-
Now, we need to determine the possible products when these ions combine. Since potassium (K+) has a +1 charge and iodide (I-) has a -1 charge, they can combine to form potassium iodide (KI):
K+ + I- -> KI
Similarly, magnesium (Mg2+) and sulfide (S2-) can combine to form magnesium sulfide (MgS):
Mg2+ + S2- -> MgS
Now, we can write the complete ionic equation by representing all the ions present before and after the reaction:
2K+ + S2- + Mg2+ + 2I- -> 2KI + MgS
To obtain the net ionic equation, we remove the spectator ions, which are the ions that appear on both sides of the equation and do not participate in the actual reaction. In this case, the spectator ions are the potassium ions (K+) and the iodide ions (I-).
Thus, the net ionic equation for the reaction between potassium sulfide and magnesium iodide is:
S2- + Mg2+ -> MgS
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Balance aqueous magnesium chloride + aqueous zinc chromate
Answers
The balanced equation between aqueous magnesium chloride and aqueous zinc chromate is:
MgCl₂(aq) + ZnCrO₄(aq) ⇒ MgCrO₄(s) + ZnCl₂(aq)
Let's consider the equation between aqueous magnesium chloride and aqueous zinc chromate. This is a double displacement reaction, which produces solid magnesium chromate and aqueous zinc chloride.
MgCl₂(aq) + ZnCrO₄(aq) ⇒ MgCrO₄(s) + ZnCl₂(aq)
As we can see, the equation is already balanced when all the stoichiometric coefficients are equal to 1.
The balanced equation between aqueous magnesium chloride and aqueous zinc chromate is:
MgCl₂(aq) + ZnCrO₄(aq) ⇒ MgCrO₄(s) + ZnCl₂(aq)
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PLEASE BROO if the controlled substances, which schedule of drugs is the average person most likely to have in their homes? How are the controlled substances in this group different from those in the other schedule levels?
Answers
Answer:
The average person is most likely to have Schedule V controlled substances in their homes. These drugs have a low potential for abuse and limited dependence liability compared to other schedule levels. They are often used for medical purposes and include cough syrups containing codeine, anti-diarrhea medications, and some prescription pain medications.
The drugs in other schedule levels, such as Schedule I, II, III, and IV, have a higher potential for abuse and dependence and are considered to be more dangerous and addictive. These schedules include drugs such as cocaine, methamphetamine, fentanyl, and other highly regulated substances.
Explanation:
what is the difference between an acid and a base?
Answers
Answer:

A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
\({\underline{\underline{\bf{\red{\:\:Acid\:\:}}}}}\)
Proton donor and electron pair acceptorIt can increase the concentration of H+ ion in aq. solution.pH value is <7Turn blue litmus paper into redAcid reacts with bases to form saltsAcid taste sour\({\underline{\underline{\bf{\orange{\:\:Base\:\:}}}}}\)
Proton acceptor and electron pair donorIt can increase the concentration of OH- ion in aq. solution.pH value is >7Turn red litmus paper into blueBases reacts with acids to form saltsBases taste soapyWho knows Cameron Herrin?
Answers
Explanation:
Cameron Herrin has killed a mother and her baby on a highway in Tampa, Florida
on 2018 on a illegal race
]All organic compounds contain the element carbon but, not all compounds containing the element “carbon”are organic .Justify this statement.
Answers
The statement "All organic compounds contain the element carbon, but not all compounds containing the element 'carbon' are organic" can be justified based on the definition and characteristics of organic compounds.
Organic compounds are compounds primarily composed of carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, sulfur, and phosphorus. These compounds are typically associated with living organisms and are known for their unique properties and behavior, including the ability to form complex structures, exhibit covalent bonding, and undergo organic reactions.
On the other hand, there are compounds that contain carbon but are not classified as organic. One notable example is carbon dioxide (\(CO_{2}\)), which is a simple inorganic compound composed of carbon and oxygen. Carbon dioxide does not possess the characteristic properties of organic compounds, such as the ability to form long chains or undergo organic reactions.
Additionally, there are inorganic compounds like carbonates (such as calcium carbonate) and carbides (such as calcium carbide) that contain carbon but are not considered organic. These compounds have distinct chemical and physical properties different from those of organic compounds.
In summary, while all organic compounds contain carbon, not all compounds containing carbon are organic. The classification of a compound as organic or inorganic depends on its overall molecular structure, bonding, and characteristic properties.
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ANSWER ASAP
The (blank) state is the lowest possible energy level that an electron can occupy.
When the electron gains energy, it may move to a higher energy level. This is called the (blank) state.
Answers
Answer:
The first one is ground and the second one is excited
Explanation:
rank is studying the following reaction. After the system comes to equilibrium in a 500 mL sealed container he finds that there is 1 mol HBr(g), 0.5 mol O2(g), 0.66 mol H2O(g), and 1.2 mol Br2(g). He then adds an additional 1 mol of O2(g). 4 HBr(g) + O2(g) = 2 H2O(g) + 2 Bra(s) 1. Write the equilibrium expression for keq. 2. Solve for Ke 3. Write the equilibrium expression for Q after the addition of more O2(e) and solve for Q. 4. After the addition of 1 mol O2(g) will the reaction proceed spontaneously in the forward direction or the reverse direction? How do you know this?
Answers
1. The equilibrium expression for Keq: Keq = [H2O(g)]2 / [HBr(g)][O2(g)]
2. Solve for Keq: Keq = [(0.66 mol H2O(g))2 / (1 mol HBr(g))(0.5 mol O2(g))] = 1.32
3. The equilibrium expression for Q after the addition of more O2(g) and solve for Q: Q = [H2O(g)]2 / [HBr(g)][O2(g)]
Q = [(0.66 mol H2O(g))2 / (1 mol HBr(g))(1.5 mol O2(g))] = 0.44
4. The reaction will proceed spontaneously in the forward direction since Q (0.44) is less than Keq (1.32).
After the system comes to equilibrium in a 500 mL sealed container he finds that there is 1 mol HBr(g), 0.5 mol O2(g), 0.66 mol H2O(g), and 1.2 mol Br2(g). He then adds an additional 1 mol of O2(g). 4 HBr(g) + O2(g) = 2 H2O(g) + 2 Bra(s) 1.
This means that the concentration of products is lower than the concentration of reactants, and so the reaction will shift to the right, in the forward direction.
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PLEASE HURRY :how many hydrogen atoms are in 4.56g of water?
Answers
Answer:
≈
1.2
⋅
10
24
atoms of hydrogen
Explanation:
Water has a molar mass of
18.01528
g/mol
≈
18
g/mol
.
So, in
18
g
of water, there will be
18
g
18
g
/mol
=
1
mol
an organisms particular role in its habitat,or when and how it survives, is called its
Answers
Answer:
Niche.
A niche is a place where an organism lives at a given time or how the organism lives there.
Prepare one solution that has 0.12 M of FeCl3 and 0.40 M of HCl with the reagents 3 M HCl and Solid FeCL3 * 6H20. Provide the calculations and protocol to make the solution in a lab.
Answers
To prepare a 0.12 M solution of FeCl₃, the amount of solid FeCl₃ to be dissolved in a given volume of solvent will be 9.72 grams.
Given,
Molarity of FeCl₃ (M)= 0.12 M
The molecular weight (m) of FeCl₃ is = 162 gm
The volume of the solution (V) to be prepared is =500 ml
The amount of FeCl₃ to be dissolved to make a 0.12 M solution is= x
So,
MV= x ÷ m × 1000
0.12× 500 = x ÷ 162 × 1000
x = 60 × 162 ÷ 1000
x= 9.72 gm
So 9.72 grams of FeCl₃ is dissolved to make 500 ml of 0.12 M solution.
For preparing 0.4 M HCl from 4M HCL:
If we need to make 500 ml of solution with 0.4M of HCL, then we use the formula:
M₁V₁= M₂V₂
0.4 × 500= 4 × x
x= 50 ml
So 50 ml of 4M HCL is taken to make 0.4 M HCL.
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Calculate the mass of NaCO3 used in experiment. SHOW WORK — 15 points!!
Mass of empty evaporating dish: 46.233g
Mass of evaporating dish + sodium bicarbonate: 48.230g
Mass of evaporating dish + product after 1st drying: 47.504 g
Mass of evaporating dish: 46.233g
Mass of evaporating dish + product after 2nd drying: 47.485
Answers
The mass of sodium bicarbonate (NaHCO₃) used in the experiment is 1.997 g
Calculating massFrom the question we are to calculate the mass of NaHCO₃ (sodium bicarbonate) used in the experiment
From the given information
Mass of empty evaporating dish = 46.233g
Mass of evaporating dish + Sodium bicarbonate = 48.230g
∴ Mass of sodium bicarbonate (NaHCO₃) = [Mass of evaporating dish + Sodium bicarbonate] - [Mass of empty evaporating dish]
Mass of sodium bicarbonate (NaHCO₃) = 48.230g - 46.233g
Mass of sodium bicarbonate (NaHCO₃) = 1.997 g
Hence, the mass of sodium bicarbonate (NaHCO₃) used in the experiment is 1.997 g
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What is the binding energy for the nuclide 199F (atomic mass: 18.9984 amu) in MeV per nucleus?
Answers
The binding energy per nucleon for the ¹⁹F nucleon is equal to 7.786 MeV/nucleon.
What is binding energy?Binding energy can be defined as the minimum quantity of energy that is required to remove the particle from the system. Nuclear binding energy can be described as the energy required to dismantle a nucleus of an atom into free neutrons and protons.
The binding energy will be determined from the mass defect. Mass defect is calculated from the difference between the mass observed and the expected combined mass.
Given the mass of the ¹⁹F = 18.9984 a.m.u.
The mass defect for the ¹⁹F can be calculated as:
Δm = \((M _n +M_p) - M_F\)
\(\triangle m =( 9\times 1.0078 + 10 \times 1.0087 )- 18.9984\)
\(\triangle m =0.1588 \;a.m.u.\)
The binding energy for the fluorine can be calculated as:
E = Δmc²
E = 0.1588 × 931.5
E = 147.92 MeV
The binding energy per nucleon of ¹⁹F can be calculated as:
B.E.N. = 147.92/18.9984 = 7.786 MeV per nucleon
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Which equation shows an increase in entropy?
Hint: Look at the states of matter, g s l, of the chemicals in each equation. A C2H4(g) + H2(g) + C2H6(g) в Caco3(9) + Cao(s) - CO2(g) c Fe(s) + S (s) -+ FeS (s)
Answers
The equation C2H4(g) + H2(g) + C2H6(g) → Caco3(s) + Cao(s) + CO2(g) shows an increase in entropy due to the formation of a gas as a product. Option A
In this equation, the reactants on the left-hand side consist of gases (C2H4 and H2), while the products on the right-hand side include a solid (Caco3) and a gas (CO2).
When a reaction involves a change from gaseous to solid or liquid states, there is typically a decrease in entropy because the particles become more ordered and constrained in the solid or liquid phase.
Conversely, when a reaction involves the formation of gases, there is generally an increase in entropy because gases have higher degrees of molecular motion and greater freedom of movement compared to solids or liquids.
In the given equation, the reactants include three gaseous compounds (C2H4, H2, and C2H6), and one of the products is a gas (CO2). Therefore, the overall entropy of the system increases during this reaction.
The equation Fe(s) + S(s) → FeS(s) does not show an increase in entropy. Both the reactants (Fe and S) and the product (FeS) are solids. Since solids have lower entropy compared to gases or liquids, the entropy of the system does not increase in this reaction. Option A
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1. A 99.8 mL sample of a solution that is 12.0% KI by mass (d: 1.093 g/mL) is added to 96.7 mL of another solution that is 14.0% Pb(NO3)2 by mass (d: 1.134 g/mL). How many grams of PbI2 should form?
Pb(NO3)2(aq) + 2 KI(aq) PbI2(s) + 2 KNO3(aq)
Answers
Answer:
\(m_{PbI_2}=18.2gPbI_2\)
Explanation:
Hello,
In this case, we write the reaction again:
\(Pb(NO_3)_2(aq) + 2 KI(aq)\rightarrow PbI_2(s) + 2 KNO_3(aq)\)
In such a way, the first thing we do is to compute the reacting moles of lead (II) nitrate and potassium iodide, by using the concentration, volumes, densities and molar masses, 331.2 g/mol and 166.0 g/mol respectively:
\(n_{Pb(NO_3)_2}=\frac{0.14gPb(NO_3)_2}{1g\ sln}*\frac{1molPb(NO_3)_2}{331.2gPb(NO_3)_2} *\frac{1.134g\ sln}{1mL\ sln} *96.7mL\ sln\\\\n_{Pb(NO_3)_2}=0.04635molPb(NO_3)_2\\\\n_{KI}=\frac{0.12gKI}{1g\ sln}*\frac{1molKI}{166.0gKI} *\frac{1.093g\ sln}{1mL\ sln} *99.8mL\ sln\\\\n_{KI}=0.07885molKI\)
Next, as lead (II) nitrate and potassium iodide are in a 1:2 molar ratio, 0.04635 mol of lead (II) nitrate will completely react with the following moles of potassium nitrate:
\(0.04635molPb(NO_3)_2*\frac{2molKI}{1molPb(NO_3)_2} =0.0927molKI\)
But we only have 0.07885 moles, for that reason KI is the limiting reactant, so we compute the yielded grams of lead (II) iodide, whose molar mass is 461.01 g/mol, by using their 2:1 molar ratio:
\(m_{PbI_2}=0.07885molKI*\frac{1molPbI_2}{2molKI} *\frac{461.01gPbI_2}{1molPbI_2} \\\\m_{PbI_2}=18.2gPbI_2\)
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At 25∘C, the Henry's law constant for CO2 is 0.034Matm. What pressure of carbon dioxide is needed to maintain a CO2 concentration of 0.80 M?
Answers
Answer:
P = (Henry's law constant) * (CO2 concentration)
P = (0.034 M/atm) * (0.80 M) = 0.027 atm.
In order to maintain a CO_2 concentration of 0.80 M at 25 degrees Celsius, a pressure of about 23.53 atm would be needed according to Henry's Law.
In the field of Chemistry, Henry's law is used to describe the solubility of gases in liquids. This law states that at a constant temperature, the amount of a given gas that dissolves in a given type and volume of liquid is directly proportional to the partial pressure of that gas in equilibrium with the liquid.
Using the given values from the problem, where the Henry's Law constant (KH) is 0.034 M⋅atm and the desired CO_2 concentration (C) is 0.80 M, we can insert these into the formula for Henry's law: P = C/KH.
By substituting the relevant values, you get P = 0.80 M / 0.034 M⋅atm which equates to approximately 23.53 atm. Therefore, a pressure of about 23.53 atm of carbon dioxide would be needed to maintain a CO_2 concentration of 0.80 M at 25 degrees Celsius.
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English schoolteacher who proposed the atomic theory model of matte
Answers
Answer:
John Dalton
Explanation:
hope it helps
According to Arrhenius, NH4+ an acid or a base? Write an equation to support
Answers
According to Arrhenius definition of acids, \(NH4^+\) is an acid.
According to Arrhenius definition of acids and bases, acid is any substance that produces hydrogen ion in solution as its only positive ion.
Following this definition, let us now consider what happens when \(NH4^+\) is introduced into a water;
\(NH4^+\)(aq)-------> NH3(aq) + \(H^+\)(aq)
Hence, according to Arrhenius definition of acids, \(NH4^+\) is an acid.
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100 POINTS!!!
What is the average rate of the reaction over the entire course of the reaction?
1.6 × 10−3 (?)
1.9 × 10−3 (?)
2.0 × 10−3 (X)
2.2 × 10−3 (X)
Answers
Answer:
b. 1.9 × 10-3
Explanation:
Answer:1.9x10-3
Explanation:
average
The spoon's broken appearance is caused by light waves that are
A
Reflected by the glass and then absorbed the water
B
Refracted by the water
С
Absorbed by the metal spoon
D
Reflected by the metal spoon and the water
Answers
Answer:
its b
Explanation:
You add 9.3 g of iron to 28.60 mL of water and observe that the volume of iron and water together is 29.78 mL . Calculate the density of iron.
Express your answer to two significant figures with the appropriate units.
Answers
Answer:
density = mass / volume
mass of iron = 9.3g
volume of iron = 29.78ml - 28.00ml = 1.78 ml
density of iron = 9.3 / 1.78 = 5.22471910112 = 5.0
Explanation:
4. One molecule of propanol contains a total of
flonsoona
(1) one -OH group
(2) two -CH3 groups
(3) three -OH groups
(4) three -CH3 groups
Answers
One molecule of propanol contains only one -OH group and not three -OH groups or three -CH3 groups.
The -OH group is attached to the central carbon atom and makes propanol a useful solvent and intermediate in organic chemistry.Propanol is a colorless liquid that belongs to the family of alcohols. It has the formula C3H8O, and it contains three carbon atoms, eight hydrogen atoms, and one hydroxyl group (-OH) attached to one of the carbons. One molecule of propanol contains only one -OH group, which is attached to the central carbon atom.
Thus, option (2) is the correct answer, and the other options are incorrect.The -OH group in propanol is responsible for its unique chemical and physical properties. It makes propanol soluble in water and other polar solvents and gives it a high boiling point of around 97°C. The hydroxyl group can also participate in chemical reactions, such as esterification, dehydration, oxidation, and reduction. For example, propanol can be oxidized to form propanal and then propanoic acid, which is a useful synthetic intermediate for many organic compounds.Apart from the -OH group, propanol also contains two other functional groups called methyl groups (-CH3). These are attached to the two carbon atoms adjacent to the central carbon. However, the question only asks about the number of -OH groups in propanol, so the methyl groups are irrelevant.
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What is the movement of air during the day where land and water meet? Cooler sea air moves toward land, where conduction from the land warms it. , . Direction cannot be predicted; it must be observed. . Cooler air over land moves toward the water, where it is warmed by radiation.
Answers
I hope I'm not late, but it's "Cooler air over land moves toward the water, where it is warmed by radiation."
Stoichiometry is based onQuestion 20 options:A) temperature.B) molecular weight.C) conservation of matter.D) pressure.
Answers
Answer:
C) Conservation of matter.
Explanation:
Stoichiometry is based on conservation of matter, that is, matter cannot be created or destroyed, it only changes, that's why a balanced chemical reaction has the same amount of each element in each side of the reaction (on the reactants side and on the products side).
Write a balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of cobalt(II) chloride and potassium hydroxide are combined. Use the pull-down boxes to include states such as (8) or (aq).
Answers
The reaction between cobalt (II) chloride and potassium hydroxide can be depicted as follows:
CoCl2(aq)+2KOH(aq)----> Ca(OH)2(s)+2KCl(aq)
A double displacement reaction is one that involves the exchange of ions and leads to the formation of new products. The products that are soluble in water are represented by the symbol (aq) and the ones that are insoluble in the water remain in the (s) or precipitate form along with the chemical formulas.
The double displacement reaction can be depicted as follows:
XY+AB--->AB+AY
The reaction between cobalt (II) chloride and potassium hydroxide can be depicted as follows:
CoCl2(aq)+2KOH(aq)----> Ca(OH)2(s)+2KCl(aq)
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Consider the combustion of hexane:
2C6H14+19O2=12CO2+14H2O
a. If you started with 7.77 moles of hexane, how many of carbon dioxide could be produced?
b. If you started with 8.11g of hexane, how many moles of carbon dioxide could be produced?
c. How many grams of oxygen gas are needed to react with 25 moles of hexane?
d. What mass of water vapor, in kg, could be produced from combustion of 55.3kg of hexane?
Answers
a. As per the balanced reaction, 2 moles of hexane gives 12 moles of carbon dioxide. Then, 7.77 moles of hexane will give 46.2 moles of carbon dioxide.
What is combustion ?Combustion is an exothermic reaction in which a gas reacts with oxygen to give carbon dioxide and water. Given the combustion reaction of hexane gas.
b. molar mass of hexane = 86 g/mol
no.of moles in 8.11 g = 8.11 /86 = 0.094 g
2 moles of hexane gives 12 moles of carbon dioxide. Then 0.094 moles of hexane will give
0.094 × 12/2 = 0.56 moles
molar mass of carbon dioxide = 44 g/mol
then, mass of 0.56 moles = 0.56 × 44 = 24.6 g
c. 2 moles of hexane reacts with 19 moles of oxygen gas. Then, 25 moles of hexane needs to reacts with 237.5 moles of oxygen gas.
mass of oxygen gas = 32 g/mol
mass of 237.5 moles = 32 × 237.5 = 7600 g of oxygen is needed.
d. 2 moles of hexane gives 14 moles of water vapor. That is 172 g of hexane gives (18 × 14) 252 g of water.
then, 55.3 kg of hexane gives:
(55.3 kg × 0.252 kg)/0.172 kg = 81 kg.
Therefore, 81 kg of water vapor is produced from 55.3 kg of hexane.
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What ion has a +3 charge, 28 electrons and an atomic mass of 71?
Answers
The ion with a +3 charge, 28 electrons, and an atomic mass of 71 is the aluminum ion (\(Al^{3+}\)).
Aluminum (Al) typically has an atomic number of 13, which means it has 13 protons and 13 electrons in its neutral state. However, in the given ion, \(Al^{3+}\), the ion has lost three electrons, resulting in a +3 charge. This means that the ion now has 13 protons and only 10 electrons remaining, giving it a net positive charge of +3.
The atomic mass of aluminum is 26.98 atomic mass units (amu). The given ion has an atomic mass of 71 amu, which suggests that the ion has gained additional particles. In this case, the ion has also gained three neutrons, resulting in a higher atomic mass.
The total number of particles (protons, neutrons, and electrons) in the ion can be calculated by adding the number of protons (13) and the number of neutrons (3), which equals 16. Since the ion has a net charge of +3, it only contains 10 electrons.
In summary, the ion with a +3 charge, 28 electrons, and an atomic mass of 71 is the aluminum ion (\(Al^{3+}\)), which has 13 protons, 10 electrons, and 3 neutrons.
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Stamples of heterogeneous equilibria. FeO(s) + CO(g) = Fe(s) + CO₂(g) II. H₂(g) L₂(g) = 2HI(g) III. CO₂(g) + C(s) = 2CO(g) IV. N₂(g) 3H₂(g) + 2NH3(g) Identify I.
Answers
An example of heterogeneous equilibrium is:
I. FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g)What is heterogeneous equilibrium?Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.
Considering the given equations:
The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.
This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.
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Is the bond length in HCl the same as that in DCl? The wavenumbers of the J = 0 1 rotational transitions for H35Cl and 2H35Cl are 20.8784 and 10.7840 cm–1, respectively. Accurate atomic masses are H = 1.007825 amu, 2H = 2.0140 amu, and 35Cl = 34.96885 amu. Based on this information alone, can you conclude that the bond lengths are the same or different in the two molecules?