If the na-25's half-life is 60 seconds, 0.625 mg was added to the mixture vessel 3 minutes later.
In what metal are reactors constructed?A reactor can be fueled with a variety of materials, although uranium is the most often utilized fuel. Oceans contain uranium, which is widely distributed throughout the earth and is also rather abundant. You can also use other fuels, such thorium and plutonium. Uranium is used as nuclear fuel in reactors. The uranium is transformed into tiny ceramic pellets and piled into fuel rods, which are enclosed metal tubes. To create a fuel assembly, typically upwards of 200 of all these rod are bundled together.
(5)(½^(3/1)) = .625 mg
3 half lives later 5/2 = 2.5mg,
Consequently, 2.5/2 = 1.25 mg, and 1.25/2 = 0.625 mg remain.
To know more about Reactor visit :
https://brainly.com/question/12934393
#SPJ4
if 9.22 mg of na-25 were removed from the reactor 0.625 mg of na-25 were placed in the reaction vessel 3 min later if the half-life of na-25 is 60 seconds.
In what metal are reactors constructed?A reactor can be fueled with a variety of materials, although uranium is the most often utilized fuel. Oceans contain uranium, which is widely distributed throughout the earth and is also rather abundant. You can also use other fuels, such thorium and plutonium. Uranium is used as nuclear fuel in reactors. The uranium is transformed into tiny ceramic pellets and piled into fuel rods, which are enclosed metal tubes. To create a fuel assembly, typically upwards of 200 of all these rod are bundled together.
Given that,
the half-life of na-25 is 60 seconds
9.22 mg of na-25 were removed from the reactor
now,
(5)(½^(3/1)) = 0.625 mg
3 half lives later 5/2 = 2.5mg,
Consequently, 2.5/2 = 1.25 mg, and 1.25/2 = 0.625 mg remain.
To know more about reactor refer to:
brainly.com/question/12934393
#SPJ4
a neutron makes a better nuclear bullet than a proton or an electron because it
A neutron makes a better nuclear bullet compared to a proton or an electron because it "has no electrical charge".
A neutron refers to a subatomic particle presented in the nucleus of every atom except that of simple hydrogen. The particle neutron derives its name from the fact that it carries no electrical charge. It means the neutron is neutral but is extremely dense.
In a comparison of a neutron with an electron and proton, it is obvious that a neutron makes a better nuclear bullet because a neutron carries no electrical charge.
You can learn more about neutron at
https://brainly.com/question/26952570
#SPJ4
Which functional group contains only nonpolar covalent bonds?
Alkanes which are the hydrocarbons functional group contains only nonpolar covalent bonds.
Functional groups are collections of atoms that have a common pattern of chemical reactivity.
Alkane a hydrocarbon with no multiple bonds is an alkane
Characteristics: nonpolar
Geometry: tetrahedral (sp3 hybridized)
Reactivity: free radical reactions (e.g. free radical chlorination or bromination).
A hydrocarbon with at least one C–C double bond (π bond) is an alkene.
Characteristics: nonpolar. Molecule cannot rotate along double bond.
Geometry: trigonal planar (sp2 hybridized)
Reactivity: undergo addition reactions, as well as oxidative cleavage
Stability increases with increasing of carbons attached.
A carbonyl (C=O) attached to a hydrogen and another carbon is an aldehyde Ethanal Propanal Butanal.
Examples: Benzaldehyde
Suffix: "-al" (if attached to ring: carbaldehyde) As a substituent: "oxo"
Characteristics: the C=O bond is somewhat polar
Reactivity: addition reactions (the carbonyl carbon reacts easily with nucleophiles)
To know more about functional group here
https://brainly.com/question/493841
#SPJ4
a battery may be rated in ampere-hours (ah). a lead-acid battery is rated at 185 ah. what is the maximum current the lead-acid battery can supply for 65 h?
According to the claim made, the maximum current it can produce for 65 hours is 2.84A.
Why does a battery include lead-acid?Two electrodes are immersed in an atmosphere of sulfuric acid to form the lead-acid battery. The deleterious electrode is connected to a mesh of metallic lead, whereas the column . the column is constructed of metallic lead oxidation grains. Lead-acid batteries take longer to charge than lithium-ion batteries since the latter can handle higher current rates. This is essential for time-sensitive applications whereby vehicles are used more often and take fewer breaks. The amount of water inside the battery decreases as more of it is transformed into hydrogen.
Rating Given: 185 Ah
The maximum current for 65 hours will be I = 185Ah/65h I = 2.84 A.
To know more about Lead-acid battery visit:
https://brainly.com/question/29643320
#SPJ4
For the following electrochemical cell Co(s)|Co^2+ (aq, 0.0155 M)||Ag^+ (aq, 2.50 M)|Ag(s)Write the net cell equation. Phases are optional. Do not include the concentrations __Calculate the following values at 25.0°C using standard potentials as neededE°cell = ___ VE cell = ___ VΔG°rxn = ___ kJ/molΔGrxn = ___ kJ/mol
The concentrations of both reactants and products are not changing. Thus, ΔGrxn = -318.2 kJ/mol.
What is concentrations?Concentration is a measure of how much of a substance is dissolved in a given quantity of a solution.
Net Cell Equation: Co(s) + 2 Ag^+(aq) → Co^2+(aq) + 2 Ag(s)
E°cell = -0.337 V
E cell = -0.337 V
ΔG°rxn = -159.1 kJ/mol
ΔGrxn = -159.1 kJ/mol
The standard potential of the cell, E°cell, is calculated by subtracting the standard reduction potential of the reduction half-reaction (Ag+ + 1e- → Ag, E° = +0.799 V) from the standard reduction potential of the oxidation half-reaction (Co → Co2+, E° = -1.136 V). Thus, E°cell = -1.136 V + 0.799 V = -0.337 V.
The cell potential, Ecell, is equal to the standard potential, E°cell, since the concentrations of both reactants and products are not changing. Thus, Ecell = -0.337 V.
The standard reaction Gibbs free energy, ΔG°rxn, is calculated by subtracting the Gibbs free energy of the products (2 Ag(s): ΔG°f = 0 kJ/mol) from the Gibbs free energy of the reactants (Co(s): ΔG°f = 0 kJ/mol, 2 Ag+ (aq): ΔG°f = -318.2 kJ/mol). Thus, ΔG°rxn = 0 kJ/mol - (-318.2 kJ/mol) = -318.2 kJ/mol.
The reaction Gibbs free energy, ΔGrxn, is equal to the standard reaction Gibbs free energy, ΔG°rxn, since the concentrations of both reactants and products are not changing. Thus, ΔGrxn = -318.2 kJ/mol.
To learn more about concentrations
https://brainly.com/question/10838453
#SPJ4
Classify each solid as a covalent, ionic, metallic, or molecular solid.
a. pure sodium
b. white phosphorus
c. sodium sulfide
d. frozen carbon dioxide
Ionic bonds are formed by potassium iodide (KI). Iodine and potassium have highly dissimilar electronegativities. Since ionic bonds are formed between atoms with a significant difference, the two would join together.
Is sodium sulfide metallic, molecular, or covalently ionic?A substance with the formula Na2S N a 2 S is sodium sulfide. This is an ionic compound since it consists of a metal and a non-metal.
Is NaCl covalent or metallic?covalent fusion. The creation of ions by the passage of electrons results in the formation of ionic compounds like sodium chloride (NaCl). Ionic bonds are created when ions interact electrostatically.
To know more about Potassium Iodide visit:
https://brainly.com/question/28099104
#SPJ4
two types of thermometers and their characteristics
Answer:
Touch, or contact, thermometers must touch the body in order to measure temperature. Remote, or no-contact, thermometers can measure body temperature without touching the skin.
Explanation:
hope this helps
Which of the following is probably true for a solid solute with a highly endothermic heat ofsolution when dissolved in water?(A) The solid has a low lattice energy(B) As the solute dissolves, the temperature of the solution increases(C) The resulting solution is ideal(D) The solid is more soluble at higher temperatures(E) the solid has a high energy of hydration
The solid is more soluble at higher temperatures is probably true for a solid solute with a highly endothermic heat ofsolution when dissolved in water. The correct option to this question is D.
The solubility of most solid or liquid solutes increases with increasing temperature. The components of mixtures can often be separated by fractional crystallization. It separates compounds according to their solubility.
When water is heated, the molecules gain energy and move faster. Because they move faster, they come into contact with sugar more often and dissolve faster.
As the temperature increases, the kinetic energy of the solvent particles increases, effectively breaking them apart. Dissolved particles are effectively held between solvent molecules, increasing solubility.
For more information on effect of temperature on solid kindly visit visit to
https://brainly.com/question/4353941
#SPJ4
Find the angle between each of the following pairs of vectors A⃗ =Axi^+Ayj^ and B⃗ =Bxi^+Byj^.
Part A
Ax1= -2.20, Ay1= 5.00; Bx1= 2.10, By1= -3.00.
Part B
Ax2= 3.40, Ay2= 5.80; Bx2= 10.6, By2= 6.80.
The angle between each of the following pairs of vectors A⃗ =Axi^+Ayj^ and B⃗ =Bxi^+Byj^ is A) α = 169° B) α = 26.85°
What is vector?In mathematics and physics, vector is a term that refers to some quantities that cannot be expressed by single number, or to elements of some vector spaces.
A) Given, Ax1= -2.20, Ay1= 5.00 Bx1= 2.10, By1= -3.00.
A.B= ( -2.20i + 5.00j) + (2.10i + 3.00j)
A.B = -19.62
Module of vector A= √ (-2.20)² +(5)²= 5.46
Module of vector B= √ (2.10)² +(-3)² = 3.66
α = cos^-1( A.B/ A B)
= cos^-1( -19.62/ 5.46* 3.66)
α = 169°
B) Given, Ax2= 3.40, Ay2= 5.80; Bx2= 10.6, By2= 6.80.
A.B= ( 3.40i + 5.80j) + (10.6i + 6.80j)
A.B = 75.48
Module of vector A= √ (3.40)² +(5.80)²= 6.72
Module of vector B= √ (10.6)² +(6.80)²= 12.59
α = cos^-1( A.B/ A B)
= cos^-1( 75.48/ 6.72* 12.59)
So, α = 26.85°
To know more about vectors, refer
https://brainly.com/question/110151
#SPJ4
if an acid has a ka=1.6 x 10-10 what is the acidity of the solution
The information provided in the query is insufficient to calculate the solution's acidity. This is due to the fact that the equation pH = -log [H+] is the sole way to determine acidity.
What is the solution's acidity?A solution's acidity can be determined by looking at its pH, which is a measurement of hydrogen ion concentration. Pure water slightly separates into ions with roughly equal amounts of hydrogen & hydroxyl (OH) ions. [H+] is 107 for such a neutral solution, or pH = 7.
Consequently, how can something get basic or acidic?Whenever the hydroniums and hydroxyls are not in balance, that occurs. The substance is acidic if it contains more positive charge hydroniums than that of negatively charged hydroxyls.
To know more about solution's acidity visit :
https://brainly.com/question/12551724
#SPJ4
Suppose the beam consists of a mixture of 12C and 14C ions. If v and B have the same values as in part B, calculate the separation of these two isotopes at the detector. Express your answer with the appropriate units.
This beam separation should allow for easy separation of the two ions .∆R = 4 cm if the beam consists of a mixture of 12C and 14C ions.
What is an example of a chemical separation?A simple example of chemical separation is the use of desiccants to remove water from a gas stream. The percentage of carbon dioxide in blast furnace gas may be determined by measuring the thermal conductivity of the gas before and after selective removal of the carbon dioxide by passing the gas through soda lime.
What is nature of separation?The Parties agree that the termination of the employment relationship between the Parties shall be treated as a separation by mutual agreement of the Parties.
To know more about separation visit
https://brainly.com/question/26499898
#SPJ4
4. assume that the water stream is replaced by a stream of cci.. predict what would happen in each case:
a. charged comb
b. pvc pipe
c. charged balloon
By assuming that the water stream is replaced by a stream of cci. Now (a) in case of charged comb ions would likely be deflected (b) in case of pvc pipe no effect on the motion of the ions, (c) in case of charged balloon ions would be deflected.
a. If a stream of charged particles, such as ions in a charged comb, were to replace the water stream, the ions would likely be deflected by the electric field created by the charged comb. This is due to the forces acting on the ions as they move through the electric field. The amount of deflection would depend on the charge and mass of the ions, as well as the strength of the electric field.
b. If a stream of charged particles were to pass through a PVC pipe, the pipe itself would not have a significant effect on the motion of the ions. The ions would continue to move in a straight line, unaffected by the pipe. However, if the PVC pipe is insulated, it will not cause any deflection.
c. A charged balloon would also create an electric field, and if a stream of charged particles were to pass through this electric field, they would be deflected. The direction and amount of deflection would depend on the charge of the particles and the strength of the electric field created by the charged balloon.
To know more about water please refer: https://brainly.com/question/20791648
#SPJ4
Many household cleaning products contain oxalic acid, H₂C₂O4 a diprotic acid with the following dissociation constants
Ka1 = 5.9 x 10^-2
Ka2 = -6.4 × 10^-5
calculate the equilibrium concentration of h3o^+ in a 0.20 m solution of oxalic acid.
The equilibrium concentration of H3O+ ina 0.2 m solution of oxalic acid is [H3O+] = 0.08.
When a chemical process reaches equilibrium, the equilibrium constant (often represented by the letter K) sheds light on the interaction between the reactants and products. For instance, the ratio of the concentration of the products to the concentration of the reactants, each raised to their respective stoichiometric coefficients, can be used to establish the equilibrium constant of concentration (denoted by Kc) of a chemical reaction at equilibrium. It is significant to remember that there are several kinds of equilibrium constants that establish relationships between the reactants and products of equilibrium reactions in terms of various units.
The proportion of the reactant to the product in a chemical reaction is known as the equilibrium constant.
For more information on equilibrium constant kindly visit to
https://brainly.com/question/10038290
#SPJ4
What happens after having a penny in vinegar for 30 minutes?
What changes does the penny have after 10 minutes?
What changes does it have after 20 minutes?
After 30 minutes of being in vinegar, the penny will be covered in a thin layer of copper oxide.
What happens after having a penny in vinegar?After 10 minutes, the penny will have a greenish hue and it may have some bubbles on the surface.After 20 minutes, the penny will have a thicker greenish coating and more bubbles may have formed on the surface.After having a penny in vinegar for 30 minutes, the penny will have a number of visible changes.After 10 minutes, the penny will start to take on a more tarnished, dull look as the vinegar begins to dissolve the copper on the surface of the penny.After 20 minutes, the penny will start to become darker and the copper will begin to flake off.The vinegar will have also started to dissolve more of the copper, further discoloring the penny.After 30 minutes, the penny will have taken on a dark greenish-brown color and will have lost a significant amount of its copper coating.The vinegar will have completely dissolved the majority of the copper, leaving the zinc core of the penny exposed.TO learn more about having a penny in vinegar refer to:
https://brainly.com/question/20223584
#SPJ1
pure aluminum is a ductile metal with low tensile strength and hardness. its oxide al2o3 (alumina) is extremely strong, hard, and brittle. can you explain this difference from an atomic bonding point of view
The ionic bond has a much higher quality than metallic bonds. As a result, more vitality is required to break the bonds between Al and O than between Al and Al. Pure aluminium ductility .
Pure aluminium is very ductile and has a high electrical conductivity. the difference between the atomic bond between those two are Pure aluminium is a metal with a metallic bond. It has a Face Centered Cubic crystal structure and can be moved to thin thwarts.Aluminium is also used in electrical connections and transmitters for high-pressure overhead transmission lines, as well as local wiring in electrical applications.
Alumina (Al2O3) Brittleness- In any case, its oxide Al2O3 (aluminium oxide, also known as alumina, corundum) has a trigonal structure, a melting point greater than 2000 °C, and it (Al2O3) is extremely refractive. Alumina blocks are used as heater linings in high-temperature applications.
Learn more about ionic bond here:
https://brainly.com/question/11527546
#SPJ4
In which of the following aqueous solutions would you expect AgBr to have the lowest solubility?
Select one:
a. 0.010 M AgNO3
b. 0.040 M NaBr
c. pure water
d. 0.040 M KBr
e. 0.040 M SrBr2
"0.040 M SrBr2" is option (e). As all other alternatives have higher concentrations of common ions than Cu+ or Br-, the lowest concentration of Br- is 0.0100 M.
Explanation:
- The ordinary ion Br- has a higher concentration in 0.040 M solution, which in itself is 2 x 0.040 М = 0.080 M higher content than all the choices. Due to the common ion effect, which is caused by the presence of Ag+ or Br-, as AgBr's equilibrium shifts in a backward direction, the immersion of AgBr will decrease.
Among the following aqueous media would you anticipate to have AgCl's solubility to be the lowest?
Since water serves as the solvent over all instances, the maximum amount of Ag+ and Cl- AgCl may be the least sensitive of all the ions that can be precipitated in the BaCl2.
To know more ion about:
https://brainly.com/question/14982375
SPJ4
"0.040 M SrBr2" is option (e). As all other alternatives have higher concentrations of common ions than Cu+ or Br-, the lowest concentration of Br- is 0.0100 M.
Among the following aqueous media would you anticipate to have AgCl's solubility to be the lowest?Since water serves as the solvent over all instances, the maximum amount of Ag+ and Cl- AgCl may be the least sensitive of all the ions that can be precipitated in the BaCl2.
- The ordinary ion Br- has a higher concentration in 0.040 M solution, which in itself is 2 x 0.040 М = 0.080 M higher content than all the choices. Due to the common ion effect, which is caused by the presence of Ag+ or Br-, as AgBr's equilibrium shifts in a backward direction, the immersion of AgBr will decrease.
To know more ion about:
brainly.com/question/14982375
#SPJ4
What volume, in liters, of 1.0 M C6H1206 solution can be made using 360.4 g C6H12O6?
Answer:
2
Explanation:
M=mole/liters
C6H12O6; 180.2 g/mol
360.4g / 180.2 g per mol = 2. we have 2 moles now.
M=mole/liters
1M=2mole/xliters
2/1=2
2x2=1
1M=2/2
x=2
Answer:
2
Explanation:
Acellus
Give three importance of arthropods, mollusks, and echinoderms.
1.) Arthropods: Arthropods are important as
They play a key role in many ecosystems as pollinators, decomposers, and as a food source for other animals. They also have a wide range of diversity, with over 1 million known species, which makes them an important group for the study of evolution and ecology.2.) Mollusks: Mollusks are important for several reasons.
They play a key role in marine ecosystems as filter feeders and as a food source for other animals. They also have a wide range of diversity, with over 85,000 known species, which makes them an important group for the study of evolution and ecology. Additionally, they have been used by humans for food, medicine, and jewelry for thousands of years.3.) Echinoderms: Echinoderms are important for several reasons.
They play a key role in marine ecosystems as predators, scavengers, and as a food source for other animals. They also have a wide range of diversity, with over 7,000 known species, which makes them an important group for the study of evolution and ecology. They also have an unique regeneration abilities which makes them important for the study of regenerative medicine.Hope This Helps You!
A cylinder and piston assembly (defined as the system) is warmed by an external flame. The contents of the cylinder expand, doing work on the surroundings by pushing the piston outward against the external pressure. If the system absorbs 586 J of heat and does 363 J of work during the expansion, what is the value of ΔE?
The value of ΔE is 223J when a cylinder and piston assembly (defined as the system) is warmed by an external flame.
The energy in the system must conserve according to the first law of thermodynamics:
ΔE = Q - W
In this equation, E stands for internal energy, Q for heat flow (which is positive if the system absorbs the heat and negative if it releases heat), and W for work (positive if the system is expanding, and negative if the system is compressing).
Q so equals +586 J, and W equals +363 J.
ΔE = 586 - 363
ΔE = 223J
A version of the law of conservation of energy modified for thermodynamic processes is known as the First Law of Thermodynamics.
For more information on first law of thermodynamic kindly visit to
https://brainly.com/question/3808473
#SPJ4
4 importance of alkene our daily life?
1.) Alkenes are important building blocks in organic synthesis. They are widely used as starting materials for the preparation of other organic compounds, such as alcohols, ethers, and aldehydes.
2.) Alkenes are widely used in the polymer industry to make a wide range of plastics, such as polyethylene and polypropylene, which are used in packaging, textiles, and consumer goods.
3.) Alkenes are used in catalytic processes, such as catalytic cracking and dehydrogenation, to produce important chemicals such as gasoline, diesel fuel, and ethylene, which are used in the production of many other chemicals.
4.) Alkenes are also important in petrochemical industry as starting materials for the production of many other chemicals such as solvents, lubricants, and other products. Alkenes are also used as intermediates in the synthesis of fine chemicals such as pharmaceuticals, agrochemicals and fragrances.
Hope This Helps You!
How much potassium bromide, in grams, should be added to water to prepare 0.50 L of solution with a molarity of 0.125 M?
The amount of potassium bromide that should be added to water to prepare 0.50 L of solution with a molarity of 0.125 would be 7.44 grams.
Preparation of solutionsThe problem here is we don't know the exact amount, in grams of the solute, potassium bromide to dissolve in 0.50 L of water to make a solution with a molarity of 0.125 M.
Recall that the number of moles of solute present in a solution can be mathematically determined as:
Mole = molarity x volume
Thus, the number of moles of solute needed to prepare 0.50 L, 0.125 M solution would be:
0.125 x 0.50 = 0.0625 mol
This means that 0.0625 mol of potassium bromide is what we need. The equivalent mass of 0.0625 mol of potassium bromide would be:
Mass = mole x molar mass
The molar mass of potassium bromide is 119 g/mol.
Mass = 0.0625 x 119 = 7.44 grams
In other words, the amount of potassium bromide that should be added to water to prepare 0.50 L. o.125 M solution would be 7.44 grams.
More on solution preparation can be found here: https://brainly.com/question/14667249
#SPJ1
A voltaic cell utilizes the following reaction:
2Fe3+(aq)+H2(g)→2Fe2+(aq)+2H+(aq).
You may want to reference (Pages 872 - 877) Section 20.6 and Appendix E while completing this problem.
1.What is the emf of this cell under standard conditions?
Express your answer using three significant figures.
2.What is the emf for this cell when [Fe3+]= 3.80 M, PH2= 0.95 atm, [Fe2+]= 0.0008 M, and the pH in both compartments is 3.80?
Express your answer using two significant figures.
The half-reactions and balanced redox reaction for the specified voltaic cell are as follows: reduction half-reaction: 2Fe3+(aq)+2e2Fe2+(aq) E=0.77V.
What is an E cell under normal circumstances?The standard voltage gain is the prospective of the tank under uniform conditions (60 Cm for mixtures, 1 atm with gases, and pure crystals or liquids for many other elements) and a constant temperature (25 °C).
How is the E standard cell calculated?Due to the larger standard reduction potential of the silver half-cell, reduction will occur. The half-cell of tin will oxidize. The formula E0cell=E0red+E0oxid can be used to get the overall cell potential.
To know more about redox reaction visit :
https://brainly.com/question/13293425
#SPJ4
Which of the compounds below would contain polar covalent bonds? F2, N2O, KCI a. KCI only b. Both F2 and N20 c. N20 only d. F2 only
Because the electronegativity values of the nitrogen and oxygen atoms differ, the covalent bond N₂O is polar. They thus gave the atoms a partial charge.
What distinguishes ionic from covalent bonds?An atom may establish bonds with other atoms in two main ways: covalent and ionic. The interaction of electrons over three or more atoms forms a covalent connection. When four or more ions join contact, they can create ionic bonds that are kept together by charging differences.
Can covalent bonds be broken by water?When precipitation occurs sugar, it breaks the covalent connections between the carbon, oxygen, and oxygens inside the molecule, but does not destroy the comparatively weak forces that hold the particular sugar molecules together.
To know more about Covalent bonds visit:
https://brainly.com/question/3447218
#SPJ4
Draw the structure of (S)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol.
The molecular structure is obtained by solving the Schrödinger equation, a quantum mechanical equation for the motion of electrons in the field of nuclei.
What is molecular structure?The three-dimensional configuration of the atoms that make up a molecule is known as molecular geometry. In addition to bond lengths, bond angles, torsional angles, and any other geometrical factors that affect each atom's position, it also includes the molecule's overall shape. The Schrödinger equation, a quantum mechanical equation for the motion of electrons in the field of nuclei, can theoretically be used to determine the molecular structure. The bond lengths and bond angles in a molecular structure are those where the molecular energy is lowest.
Here,
The structure is in image.
The Schrödinger equation, a quantum mechanical equation for the motion of electrons in the field of nuclei, is solved to yield the molecular structure.
To know more about molecular structure,
https://brainly.com/question/503958
#SPJ4
Question 2 (1 point)How many electrons are located in the energy level with the lowest amount of energy
The first energy level can hold up to 2 electrons.
How many electrons are located in the energy level ?The first energy level can contain up to two electrons, the second can store up to eight electrons, the third can hold up to 18 electrons, and the fourth can hold up to 32 electrons. In contrast, radio waves have the lowest energy, longest wavelengths, and lowest frequencies of any kind of EM radiation. The portions of the electromagnetic spectrum are called from greatest to lowest energy: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
The bigger a shell is, the more electrons it can retain, and the higher the energies of those electrons, the further it is from the nucleus. The first shell (the one nearest to the nucleus) may accommodate two electrons.
To learn more about energy level of electrons to refer :
brainly.com/question/29680137
#SPJ4
how many d electrons can there be in an energy level ?
10 electrons can there be in energy level
How to determine that?The d sublevel has 5 orbitals, so can contain 10 electrons max.
Electrons exist around the nucleus of an atom in discrete, specific orbits.
Electrons can not just exist at any distance from the nucleus. These orbits
are called levels and we number them 1, 2, 3, 4, and so forth with the 1st
level being the orbit closest to the nucleus.
The levels can be broken down into sublevels. We have s, p, d, and f
sublevels. Level one has one sublevel – an s. Level 2 has 2 sublevels - s
and p. Level 3 has 3 sublevels - s, p, and d. Level 4 has 4 sublevels - s, p,
d, and f. The sublevels contain orbitals. Orbitals are spaces that have a high
probability of containing an electron. In other words, an orbital is an area
where the electrons live. There can be two electrons in one orbital
maximum. The s sublevel has just one orbital, so can contain 2 electrons
max. The p sublevel has 3 orbitals, so can contain 6 electrons max. The d
sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons
max.
To learn more about electrons refers to;
https://brainly.com/question/1255220
#SPJ4
if 3.25 g of n2h4 reacts with excess oxygen and produces 0.750 l of n2, at 295 k and 1.00 atm, what is the percent yield of the reaction?
At 295 K and 1.00 atm, a reaction involving 2.65 g of N2H4 and extra oxygen yields 0.75 of N2 and a percent yield of 29.76%.
Take into account the following balanced equation.
N2H4(aq) N2(g) O2(g) = N2(g) 2H2O (l)
Using the following conversion factors and 2.65 g of N2H4, we can get the theoretical volume of N2 obtained at STP.
N2H4 has a 32.05 g/mol molar mass.
N2H4 and N2 have a 1:1 molar ratio.
N2 takes up 22.4 L per mole at STP.
3.25g N2H4× (1mol N2H4/32.05)× (1mol N2H4/ 1mol N2H4)×(22.4 L N2/1mol N2
We have 2.33 L of N2 at 273.15 K, and by applying Charles' law, we can determine the volume at 295 K.
V1/T1=V2/T2
V2=V1×T2/T1
V2=V1×T2/T2
=2.33295/273.15
V2=2.52L
The following phrase can be used to get the percent yield.
%yield is experimental yield minus theoretical yield, therefore 100 = 0.75 minus 2.52 equals 29.76%.
The percent yield of the reaction is 29.76% when 3.25 g of N2H4 reacts with extra oxygen to create 0.75 l of N2 at 295 K and 1 atm.
For more information on percent yield kindly visit to
https://brainly.com/question/12970739
#SPJ4
the amount of co2 production produced by the ocean and taken in by the ocean is close to 100% balanced. true or false
'The statement the amount of carbon dioxide production produced by the ocean and taken in by the ocean is close to 100% balanced is TRUE.
What is the relationship between photosynthetic rate and respiration rate?The relationship between photosynthetic rate and respiration rate is nearly equal in order to maintain homeostasis or internal equilibrium in the biosphere, which can be considered a whole ecosystem.
Therefore, with this data, we can see that the relationship between photosynthetic rate and respiration rate is given by a nearly similar amount of carbon dioxide production and consumption.
Learn more about photosynthetic rate and respiration here:
https://brainly.com/question/16894086
#SPJ1
A bicyclist is stopped at the entrance to a valley, as sketched below: Where would the bicyclist have the highest potential energy? Where would the bicyclist have the lowest potential energy? Where would the bicyclist have the highest kinetic energy? Where would the bicyclist have the highest speed? Would the bicyclist's kinetic energy be higher at B or C? Would the bicyclist's potential energy be higher at B or C? Would the bicyclist's total energy be higher at B or C? Suppose the bicyclist lets off the brakes and coasts down into the valley without pedaling. Ever if there is no friction or air resistance to slow him down, what is the farthest point the bicyclist could reach without pedaling?
The energy that arises from a location is known as potential energy.
The energy attributed to motion is known as kinetic energy.
1. As the highest point on the road, F point has the most potential energy.
2. The lowest potential energy is present at D point, the lowest point on the route.
3. Point B will have the maximum kinetic energy since there, all of point A's potential energy is converted to kinetic energy.
4. At point B, the speed will be at its highest since all of the potential energy has been transformed into kinetic energy.
What is the straightforward meaning of potential energy?Potential energy is a form of stored energy that is dependent on the interactions between different system components. When a
To know more about potential energy visit:
https://brainly.com/question/24284560
#SPJ4
Write balanced net ionic equation for the following reaction: Fe(OH)3(s) + H2SO4(aq)→? Express your answer as a chemical equation
The balanced net ionic equation is:
2Fe⁺³(aq) + 6OH⁻(s) + 6H⁺(aq) + 3SO₄⁻² (aq) → Fe₂(SO₄)₃(s) + 6H₂O(l).
How is the ionic equation discovered?All soluble ionic compounds (those denoted with a (aq)) must be broken down into their corresponding ions in order to write the ionic equation. Each ion needs to be displayed with its charge and a (aq) to signify that it is in solution. Coefficients can be used to display the quantity of each ion.
The net ionic equation is the chemical formula that only displays the substances that are directly involved in the reaction. The spectator ions are also included in a complete ionic equation, whereas a net ionic equation only displays the chemical species that are involved in a reaction.
To know more about net ionic equation visit:
https://brainly.com/question/29299745
#SPJ4
How many formula units are in a sample of salt with a mass of 67.69 grams
Answer:
1.16mol of NaCl
Explanation:
Question:
1. How many formula units are in 67.69 grams of salt?
2. How many molecules are in 44.99 grams of water?
Converting mass to moles:
In a given amount of moles (n) of a substance there will be a given amount of mass (m) of that substance. m and n are related by the molar mass (M):
m = n x M
Hence, if we want to find n, we must rearrange the equation:
n = m/M
Answer and Explanation:
The word 'salt' in this question will be assumed to mean table salt - sodium chloride, NaCl - with a molar mass of 58.44g/mol.
Hence, 67.96g will contain 67.69g / 58.44g/mol = 1.16mol of NaCl.
We convert from moles to number of molecules/formula units by multiplying by Avogadro's constant(6.02×10²³):
1.16 x 6.02×10²³ = 6.98×10²³
formula units of NaCl
Water has a molar mass of 18.02g/mol. Therefore, 44.99g of water will represent 44.99g / 18.02g/mol = 2.50mol of water.
2.50 x
6.02
×
10
23
=
1.505
×
10
24
molecules of water
