Search found 107 matches

by josmit_1D
Sat Mar 14, 2020 6:08 pm
Forum: First Order Reactions
Topic: problem 7.27
Replies: 1
Views: 51

problem 7.27

ho do I start solving the following question: To prepare a dog of mass 1.5 kg for surgery, 150 mg of the anesthetic phenobarbitol is administered intravenously. The reaction in which the anesthetic is metabolized (decomposed in the body) is first order in phenobarbitol and has a half-life of 4.5 h. ...
by josmit_1D
Sat Mar 14, 2020 6:04 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: topic 7E problem 3
Replies: 1
Views: 34

topic 7E problem 3

can some one explain how to approach 7E.3:The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 125 kJ?mol−1 to 75 kJ?mol−1. (a) By what factor does the rate of the reaction increase at 298 K, all other factors being equal? (b) By...
by josmit_1D
Sat Mar 14, 2020 5:57 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: intermediate v. catalyst
Replies: 6
Views: 74

intermediate v. catalyst

how do you identify an intermediate versus a catalyst?
by josmit_1D
Sat Mar 14, 2020 4:47 pm
Forum: General Rate Laws
Topic: half life
Replies: 5
Views: 91

half life

from the half life equation, how do we determine how long it takes the concentration to decrease to other levels such at 1/4 or 1/16 of its original value?
by josmit_1D
Sat Mar 14, 2020 4:40 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: frequency of reactions
Replies: 2
Views: 34

frequency of reactions

why are third order reactions and higher less frequent?
by josmit_1D
Mon Mar 09, 2020 3:27 pm
Forum: Second Order Reactions
Topic: linear graph
Replies: 7
Views: 164

linear graph

for a second order reaction, what equation gives a linear plot?
by josmit_1D
Mon Mar 09, 2020 3:21 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: steady state v preeq
Replies: 4
Views: 87

steady state v preeq

how do you know if a reaction is steady-state or pre-equilibrium?
by josmit_1D
Mon Mar 09, 2020 3:03 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: k'
Replies: 6
Views: 85

k'

is k' just the equilibrium constant for the reverse reaction?
by josmit_1D
Mon Mar 09, 2020 3:01 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: boltzmann
Replies: 1
Views: 26

boltzmann

what is the significance of the Boltzmann distribution?
by josmit_1D
Mon Mar 09, 2020 2:59 pm
Forum: General Rate Laws
Topic: molecularity
Replies: 8
Views: 157

molecularity

would a termolecular reaction also be considered third order reaction?
by josmit_1D
Sun Mar 01, 2020 7:34 pm
Forum: General Rate Laws
Topic: order of the reactant
Replies: 3
Views: 60

order of the reactant

what does the order of the reactant tell us about the reaction mechanism?
by josmit_1D
Sun Mar 01, 2020 7:26 pm
Forum: Balancing Redox Reactions
Topic: homework topic 6K
Replies: 4
Views: 54

homework topic 6K

in textbook question topic 6K problem 3, why is water and hydrogen apart of the half cell equation: (S2O3)2+ 5 H2O-->2SO4+ 10H++8e-?
by josmit_1D
Sun Mar 01, 2020 7:16 pm
Forum: General Rate Laws
Topic: unique rate
Replies: 3
Views: 65

unique rate

why do we use fractions instead of whole number coefficients in the unique rate?
by josmit_1D
Sun Mar 01, 2020 7:10 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: galvanic v. voltaic
Replies: 1
Views: 22

galvanic v. voltaic

what is the difference between a galvanic and a voltaic cell?
by josmit_1D
Sun Mar 01, 2020 7:06 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: intergrated rate law
Replies: 9
Views: 152

intergrated rate law

do we need to know how to derive a integrated rate law from a differential rate law or can we simply just memorize the equation?
by josmit_1D
Sun Feb 23, 2020 12:45 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: porous disc
Replies: 5
Views: 70

porous disc

does a porous disc/wall replace a salt bridge or does it just change the separation of the solutions?
by josmit_1D
Sun Feb 23, 2020 12:43 am
Forum: Balancing Redox Reactions
Topic: writing redox equations
Replies: 3
Views: 44

writing redox equations

when writing a redox reaction equation, how do you know which half reaction equation to flip if not given the final redox equation?
by josmit_1D
Sun Feb 23, 2020 12:40 am
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: cell potential
Replies: 3
Views: 66

cell potential

is there a maximum cell potential that can be reached?
by josmit_1D
Sun Feb 23, 2020 12:36 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: cell potention in nernst
Replies: 3
Views: 48

cell potention in nernst

what is the difference between E and E^\bigcirc[/tex] in the Nernst equation?
by josmit_1D
Sun Feb 23, 2020 12:32 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: inert conductor
Replies: 2
Views: 45

inert conductor

how do we know when we need to use an inert conductor, such as platinum?
by josmit_1D
Sun Feb 16, 2020 11:24 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: importance of -RTlnk
Replies: 7
Views: 72

importance of -RTlnk

what is the importance of delta G=-RTlnk if the reaction at equilibrium does no work?
by josmit_1D
Sun Feb 16, 2020 11:18 pm
Forum: Van't Hoff Equation
Topic: finding K
Replies: 1
Views: 38

finding K

in what situations would you need to use the van't hoff equation to find K?
by josmit_1D
Sun Feb 16, 2020 11:15 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: gibbs free energy -RTlnk
Replies: 2
Views: 34

gibbs free energy -RTlnk

under which conditions do you use the equation: deltaG=-RTlnk?
by josmit_1D
Sun Feb 16, 2020 11:13 pm
Forum: Balancing Redox Reactions
Topic: oxidation number
Replies: 10
Views: 134

oxidation number

how do you calculate oxidation numbers?
by josmit_1D
Mon Feb 10, 2020 3:51 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: calculating concentrations
Replies: 1
Views: 23

calculating concentrations

when there is a small ka and you disregard the subtraction of x in calculating the concentrations, how do you figure out if it is a less than 5% change?
by josmit_1D
Sun Feb 09, 2020 8:20 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: spontaneity
Replies: 18
Views: 172

spontaneity

how do you know if the reaction is a spontaneous process or not?
by josmit_1D
Sun Feb 09, 2020 8:15 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: reversible vs. irreversible
Replies: 3
Views: 56

reversible vs. irreversible

what indications if the reaction is reversible or not?
by josmit_1D
Sun Feb 09, 2020 8:11 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Cp v.Cv
Replies: 6
Views: 64

Cp v.Cv

how do you know when to use the equation for Cp vs. Cv when dealing with ideal gases and the change in entropy equation: delta S=nCln(T2/T1)?
by josmit_1D
Sun Feb 09, 2020 2:12 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: delta U
Replies: 8
Views: 76

delta U

what does it mean when it is says delta U= q+w is an adiabatic system?
by josmit_1D
Sun Feb 09, 2020 2:10 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Cm
Replies: 4
Views: 56

Cm

in the equation deltaS= nCmln(T2/T1), what does the Cm stand for?
by josmit_1D
Sun Feb 02, 2020 2:13 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: pressure v. volume
Replies: 3
Views: 20

pressure v. volume

what is the difference in equations for deltaU when there is constant pressure vs. constant volume?
by josmit_1D
Sun Feb 02, 2020 2:12 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: energy transfered
Replies: 2
Views: 25

energy transfered

under what conditions does ?
by josmit_1D
Sun Feb 02, 2020 2:09 pm
Forum: Calculating Work of Expansion
Topic: system and surrondings
Replies: 2
Views: 23

system and surrondings

qsys+qsurr=0 in a perfect system, but is there any situation that is not perfect? if so, what would the equation be?
by josmit_1D
Sun Feb 02, 2020 1:48 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: boltzmann equation
Replies: 4
Views: 50

boltzmann equation

with boltzmann equation how does S=klnW turn into S=Rln2?
by josmit_1D
Sun Feb 02, 2020 1:46 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: degeneracy
Replies: 3
Views: 55

degeneracy

can someone please re-explain degeneracy and why when there are 3 atoms W=8?
by josmit_1D
Sun Jan 26, 2020 3:27 pm
Forum: Phase Changes & Related Calculations
Topic: state functions
Replies: 3
Views: 41

state functions

why must state functions be additive?
by josmit_1D
Sun Jan 26, 2020 3:22 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: heat rxn
Replies: 2
Views: 25

heat rxn

what is the method to calculate the heat of reaction?
by josmit_1D
Sun Jan 26, 2020 3:21 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: hess's law
Replies: 5
Views: 42

hess's law

what does hess's law state?
by josmit_1D
Sun Jan 26, 2020 3:16 pm
Forum: Phase Changes & Related Calculations
Topic: protonation v ionization
Replies: 2
Views: 20

protonation v ionization

what is the difference protonation and ionization?
by josmit_1D
Sun Jan 26, 2020 3:12 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: bond v. standard
Replies: 5
Views: 46

bond v. standard

what is the difference between bond enthalpies and standard enthalpies of formation?
by josmit_1D
Sun Jan 26, 2020 3:09 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: exo thermic
Replies: 11
Views: 171

exo thermic

which way will an equilibrium reaction shift if the temperature is increased during an exothermic reaction?
by josmit_1D
Sun Jan 26, 2020 3:08 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: endothermic
Replies: 8
Views: 51

endothermic

what is the rule for temperature change if the reaction is endothermic in relation to equilibrium?
by josmit_1D
Sun Jan 26, 2020 3:04 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: protonization/ionization
Replies: 4
Views: 61

protonization/ionization

how do you find the percent protonization/ionization?
by josmit_1D
Sun Jan 26, 2020 3:03 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ICE
Replies: 20
Views: 188

ICE

How do you know when to use an ICE table? do you have to use when if given Ka or Kb?
by josmit_1D
Sun Jan 26, 2020 2:53 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: ka &kb
Replies: 2
Views: 24

ka &kb

how do Ka and Kb relate to pOH and pH?
by josmit_1D
Sun Jan 12, 2020 11:38 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: solids and liquids
Replies: 3
Views: 27

solids and liquids

why are solids and liquids not included in the equilibrium constant equation?
by josmit_1D
Sun Jan 12, 2020 11:36 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Q
Replies: 6
Views: 84

Q

what does the reaction quotient tells us about the equilibrium reaction?
by josmit_1D
Sun Jan 12, 2020 11:35 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: pressure change
Replies: 4
Views: 37

pressure change

what is the general rule for change in pressure under Le Chatelier's principle?
by josmit_1D
Sun Jan 12, 2020 11:34 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: appliction of principle
Replies: 5
Views: 59

appliction of principle

what changes in conditions does Le Chatelier's principle apply to?
by josmit_1D
Sun Jan 12, 2020 11:33 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: pressure
Replies: 1
Views: 26

pressure

how do you calculate concentration from gas pressure?
by josmit_1D
Mon Dec 09, 2019 12:53 am
Forum: Biological Examples
Topic: Hemoglobin
Replies: 8
Views: 179

Re: Hemoglobin

myoglobin transports oxygen to muscle cells. while hemoglobin carries oxygen to the blood and tissues in the body. it also helps transport carbon dioxide and hydrogen ions.
by josmit_1D
Mon Dec 09, 2019 12:50 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Chelates
Replies: 4
Views: 159

Re: Chelates

yes all polydentates are chelating. polydentates bind in two or more places. the more atoms in the chelate ring the more stable the chelate is.
by josmit_1D
Mon Dec 09, 2019 12:46 am
Forum: Biological Examples
Topic: Cobalt
Replies: 3
Views: 118

Re: Cobalt

Cobalt's most important biological function is its role in vitamin B12. B12 assists in the metabolism of folic and fatty acids. it is also used in the production of red blood cells and the functions of the nervous system.
by josmit_1D
Mon Dec 09, 2019 12:42 am
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strength
Replies: 4
Views: 145

Re: Strength

when looking at relative anion stability, you are trying to determine which had stronger induction qualities. in other words which one does a better job at pulling a negative charge away.
by josmit_1D
Mon Dec 09, 2019 12:39 am
Forum: Amphoteric Compounds
Topic: Amphoteric
Replies: 2
Views: 118

Re: Amphoteric

amphiprotic means it can both accept and donate a proton.
amphoteric means it can act as both an acid and base.
therefore a substance is automatically amphiprotic if it is amphoteric.
by josmit_1D
Mon Dec 09, 2019 12:35 am
Forum: Biological Examples
Topic: Myoglobin
Replies: 4
Views: 212

Re: Myoglobin

Myoglobin transports oxygen to muscle cells. it is then used in respiration to create energy.
by josmit_1D
Mon Dec 09, 2019 12:24 am
Forum: Biological Examples
Topic: Cobalt
Replies: 3
Views: 118

Cobalt

What is the biological function of cobalt?
by josmit_1D
Mon Dec 09, 2019 12:23 am
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strength
Replies: 4
Views: 145

Strength

What does it mean by relative anion stability?
by josmit_1D
Mon Dec 09, 2019 12:20 am
Forum: Amphoteric Compounds
Topic: Amphoteric
Replies: 2
Views: 118

Amphoteric

What is the difference between amphoteric and amphiprotic?
by josmit_1D
Mon Dec 09, 2019 12:18 am
Forum: Biological Examples
Topic: Hemoglobin
Replies: 8
Views: 179

Hemoglobin

What is the biological importance of hemoglobin in relation to myoglobin?
by josmit_1D
Mon Dec 09, 2019 12:17 am
Forum: Biological Examples
Topic: Myoglobin
Replies: 4
Views: 212

Myoglobin

What is the biological importance of myoglobin
by josmit_1D
Sun Dec 08, 2019 9:09 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Chelates
Replies: 4
Views: 159

Chelates

Do all polydentates chelate?
by josmit_1D
Sat Nov 30, 2019 5:45 pm
Forum: Identifying Acidic & Basic Salts
Topic: salt and water formation
Replies: 5
Views: 60

salt and water formation

do all acid base reactions from a salt and water?
by josmit_1D
Sat Nov 30, 2019 5:41 pm
Forum: Polyprotic Acids & Bases
Topic: polyprotic v. bronsted
Replies: 3
Views: 121

polyprotic v. bronsted

are polyprotic acids/bases considered Bronsted acids/bases?
by josmit_1D
Sat Nov 30, 2019 5:25 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH out of the 0-14 scale
Replies: 2
Views: 43

pH out of the 0-14 scale

what does it mean if the calculated pH is negative or above 14?
by josmit_1D
Sat Nov 30, 2019 5:14 pm
Forum: Amphoteric Compounds
Topic: amphoteric oxides
Replies: 3
Views: 46

amphoteric oxides

are all amphoteric compounds oxides?
by josmit_1D
Sat Nov 30, 2019 5:14 pm
Forum: Amphoteric Compounds
Topic: compounds
Replies: 5
Views: 66

compounds

how do you know when a compound is amphoteric?
by josmit_1D
Mon Nov 25, 2019 1:30 am
Forum: Biological Examples
Topic: biological application
Replies: 2
Views: 64

biological application

what is the most important biological application of coordination compounds/ligands?
by josmit_1D
Mon Nov 25, 2019 1:27 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: coordination sphere
Replies: 1
Views: 40

coordination sphere

is just the part of the compound in the coordination sphere considered a ligand?
by josmit_1D
Mon Nov 25, 2019 1:26 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: coordination number
Replies: 2
Views: 48

coordination number

why do most complexes have a coordination number of 6?
by josmit_1D
Mon Nov 25, 2019 1:23 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: minimum coordination number
Replies: 2
Views: 42

minimum coordination number

can you have a coordination number less than 4/
by josmit_1D
Mon Nov 25, 2019 1:17 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: brackets
Replies: 13
Views: 155

brackets

what do the brackets signify when they are around the compound?
by josmit_1D
Sun Nov 17, 2019 10:05 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: bond angles
Replies: 8
Views: 92

bond angles

why do bond angles get smaller with more lone pairs?
by josmit_1D
Sun Nov 17, 2019 9:53 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: equatorial v. axial
Replies: 4
Views: 49

equatorial v. axial

why does lone pair position matter when they are equatorial and not axial?
by josmit_1D
Sun Nov 17, 2019 9:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: dipole moments
Replies: 11
Views: 117

dipole moments

when do dipoles cancel?
by josmit_1D
Sun Nov 17, 2019 9:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: suare planar
Replies: 2
Views: 43

suare planar

why is a square planar molecule rare?
by josmit_1D
Sun Nov 17, 2019 9:29 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: shape
Replies: 3
Views: 54

shape

can a molecule technically be considered two different shapes?
by josmit_1D
Sun Nov 10, 2019 7:44 pm
Forum: Resonance Structures
Topic: octet v. expanded octet
Replies: 5
Views: 65

octet v. expanded octet

can a lewis structure be drawn with both a octet structure and an expanded octet structure?
by josmit_1D
Sun Nov 10, 2019 7:18 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: intermolecular forces
Replies: 1
Views: 53

intermolecular forces

what is the relationship between polarizability and intermolecular forces?
by josmit_1D
Sun Nov 10, 2019 6:42 pm
Forum: Octet Exceptions
Topic: electron number in octet
Replies: 8
Views: 212

electron number in octet

what is the most number of electrons that a molecule with an expanded octet can have?
by josmit_1D
Sun Nov 10, 2019 6:41 pm
Forum: Lewis Structures
Topic: expanded octet
Replies: 3
Views: 64

expanded octet

how do you know which molecules can have an expanded octet?
by josmit_1D
Sun Nov 10, 2019 6:40 pm
Forum: Dipole Moments
Topic: dipole
Replies: 4
Views: 58

dipole

how do you determine if a molecule has a dipole moment?
by josmit_1D
Sat Nov 02, 2019 7:46 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: polar
Replies: 3
Views: 37

polar

how do you know if a molecule is polar or nonpolar?
by josmit_1D
Sat Nov 02, 2019 7:42 pm
Forum: Octet Exceptions
Topic: expanded octet
Replies: 1
Views: 45

expanded octet

Why do lewis structures with expanded octets have lower energy than octet structures?
by josmit_1D
Sat Nov 02, 2019 6:37 pm
Forum: Octet Exceptions
Topic: radicals
Replies: 3
Views: 94

radicals

what are radicals and why are they an exception to the octet rule?
by josmit_1D
Sat Nov 02, 2019 6:33 pm
Forum: Electronegativity
Topic: which bond
Replies: 4
Views: 94

which bond

How do you determine which type of bond it is based on electronegativity?
by josmit_1D
Sat Nov 02, 2019 5:43 pm
Forum: Ionic & Covalent Bonds
Topic: ionic character
Replies: 2
Views: 37

ionic character

why are larger ions less soluble?
by josmit_1D
Sat Nov 02, 2019 4:56 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: polarizing power
Replies: 2
Views: 51

polarizing power

how do you know which ions have high polarizing power?
by josmit_1D
Sat Nov 02, 2019 4:52 pm
Forum: Lewis Structures
Topic: double bonds
Replies: 2
Views: 34

double bonds

why does fluorine tend to not make double bonds?
by josmit_1D
Tue Oct 29, 2019 11:38 am
Forum: Resonance Structures
Topic: hybrid structure
Replies: 4
Views: 68

hybrid structure

are resonance hybrid structures usually just for carbon- hydrogen bonds?
by josmit_1D
Tue Oct 29, 2019 11:33 am
Forum: Resonance Structures
Topic: stability
Replies: 2
Views: 46

stability

why does the ability to have resonance structures mean that a molecule is more stable?
by josmit_1D
Tue Oct 29, 2019 11:14 am
Forum: Bond Lengths & Energies
Topic: bond lengths
Replies: 10
Views: 247

bond lengths

why do single, double, and triple bonds have different lengths?
by josmit_1D
Sat Oct 19, 2019 1:41 pm
Forum: Photoelectric Effect
Topic: Problem 1B.15
Replies: 1
Views: 51

Problem 1B.15

can someone explain how to solve the following problem: 1B.15 The velocity of an electron that is emitted from a metallic surface by a photon is 3.6 3 103 km?s21. (a) What is the wavelength of the ejected electron? (b) No electrons are emitted from the surface of the metal until the frequency of the...
by josmit_1D
Sat Oct 19, 2019 1:38 pm
Forum: Trends in The Periodic Table
Topic: Problem 1.13
Replies: 2
Views: 58

Problem 1.13

can someone please explain how to solve the following problem: 1.13 Ionization energies usually increase on going from left to right across the periodic table. The ionization energy for oxygen, however, is lower than that of either nitrogen or fluorine. Explain this anomaly. ?
by josmit_1D
Sat Oct 19, 2019 1:15 pm
Forum: Properties of Light
Topic: Problem 1.27
Replies: 2
Views: 95

Problem 1.27

can someone explain how to solve the following problem:1.27 A team of scientists recently developed a series of nanowires (very tiny wires) that can act as miniature lasers. (a) One nanowire was found to emit light of frequency 6.27 3 1014 Hz. What was the wavelength of the light emitted? (b) A seco...
by josmit_1D
Fri Oct 18, 2019 8:56 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 4s vs. 3d
Replies: 6
Views: 81

4s vs. 3d

can someone explain why the 3d orbital is of higher energy than the 4s?
by josmit_1D
Fri Oct 18, 2019 8:53 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: building up principle
Replies: 5
Views: 60

building up principle

Can someone please reexplain Aufbau's principle?
by josmit_1D
Sun Oct 13, 2019 12:16 pm
Forum: Properties of Light
Topic: problem 1A.15
Replies: 4
Views: 78

problem 1A.15

can someone explain how to solve the following problem: 1A.15 In the ultraviolet spectrum of atomic hydrogen, a line is observed at 102.6 nm. Determine the values of n for the initial and final energy levels of the electron during the emission of energy that leads to this spectral line.?
by josmit_1D
Sun Oct 13, 2019 12:11 pm
Forum: Properties of Light
Topic: Problem 1.31
Replies: 1
Views: 43

Problem 1.31

Can someone explain how to solve the following problem: 1.31 In a recent suspense film, two secret agents must penetrate a criminal's stronghold monitored by a lithium photomultiplier cell that is continually bathed in light from a laser. If the beam of light is broken, an alarm sounds. The agents w...
by josmit_1D
Sun Oct 13, 2019 11:56 am
Forum: Photoelectric Effect
Topic: ejecting electons
Replies: 6
Views: 84

ejecting electons

is there any case in which one photon has enough energy to eject more than one electron?

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