Search found 66 matches

by Sophia Dinh 1D
Fri Feb 14, 2020 1:35 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Constant Pressure and Volume
Replies: 6
Views: 29

Constant Pressure and Volume

what is the difference in calculation of a constant pressure system vs a constant volume system?
by Sophia Dinh 1D
Fri Feb 14, 2020 1:34 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard Enthalpies of Formation
Replies: 10
Views: 22

Standard Enthalpies of Formation

Are there some Standard Enthalpies of Formation that are 0 or is that for something else?
by Sophia Dinh 1D
Fri Feb 14, 2020 1:33 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Pressure and Moles
Replies: 7
Views: 21

Pressure and Moles

When counting moles for which way the equilibrium shifts, do you just count the coefficients or do you need to multiply that with the subscripts as well?
by Sophia Dinh 1D
Fri Feb 14, 2020 1:31 pm
Forum: Ideal Gases
Topic: ideal gas
Replies: 5
Views: 27

ideal gas

What constitutes as an ideal gas?
by Sophia Dinh 1D
Fri Feb 14, 2020 1:31 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K
Replies: 11
Views: 32

K

How do you know what to include and exclude when calculating K?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:30 am
Forum: Ideal Gases
Topic: Temperature
Replies: 17
Views: 46

Temperature

Do you need to convert the temperature to Kelvin?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:29 am
Forum: Ideal Gases
Topic: density
Replies: 5
Views: 33

density

how can you use density in PV=nRT?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:28 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Volume and Pressure
Replies: 8
Views: 25

Volume and Pressure

How are volume and pressure related?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:27 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: approximation
Replies: 4
Views: 15

approximation

when can you approximate that x is 0?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:27 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Constants
Replies: 2
Views: 13

Equilibrium Constants

whats the difference between ka and kb?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:25 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Work
Replies: 2
Views: 23

Work

Why do you need to use different equations for irreversible and reversible work?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:21 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: temperature
Replies: 4
Views: 8

temperature

do you have to convert to kelvin for the q=mcdeltat equation?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:20 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Bomb Calorimetry
Replies: 2
Views: 8

Bomb Calorimetry

What is the bomb calorimetry for?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:19 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Temperature
Replies: 6
Views: 30

Temperature

why does adding heat to an exothermic reaction drive it the other way?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:16 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Temperature
Replies: 14
Views: 38

Temperature

Is a negative delta H exothermic or endothermic?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:16 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Moles
Replies: 8
Views: 26

Moles

When determining which side has more moles, do you account for the subscripts and the coefficients or just the coefficients?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:14 am
Forum: Ideal Gases
Topic: ideal gases
Replies: 7
Views: 25

ideal gases

What are the qualifications of being an ideal gas?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:13 am
Forum: Ideal Gases
Topic: non ideal gases
Replies: 8
Views: 31

non ideal gases

What are some non ideal gases?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:11 am
Forum: Lewis Acids & Bases
Topic: Lewis acid and bases
Replies: 5
Views: 29

Lewis acid and bases

How can you tell a Lewis acid or base?
by Sophia Dinh 1D
Wed Jan 29, 2020 10:10 am
Forum: Identifying Acidic & Basic Salts
Topic: acidic and basic salts
Replies: 2
Views: 15

acidic and basic salts

How can you tell what salt will affect ph?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:50 pm
Forum: Naming
Topic: oxidation
Replies: 8
Views: 41

oxidation

how does the oxidation number play a role in naming?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:49 pm
Forum: *Molecular Orbital Theory Applied To Transition Metals
Topic: naming
Replies: 1
Views: 28

naming

what is the naming sequence?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:48 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: chelate
Replies: 5
Views: 42

chelate

What is a chelate/chelating ligand?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:47 pm
Forum: Biological Examples
Topic: cisplatin
Replies: 3
Views: 27

cisplatin

what is the biological significance of cisplatin?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:46 pm
Forum: *Molecular Orbital Theory Applied To Transition Metals
Topic: bond order
Replies: 3
Views: 27

bond order

what specifically about bond order should we know for the final?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:45 pm
Forum: *Molecular Orbital Theory Applied To Transition Metals
Topic: coordination sphere
Replies: 1
Views: 22

coordination sphere

how do I indicate something is in the coordination sphere and what does being in the coordination sphere mean?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:42 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: neutralization
Replies: 4
Views: 24

neutralization

what does neutralization form?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:40 pm
Forum: Bronsted Acids & Bases
Topic: bronsted vs lewis
Replies: 2
Views: 16

bronsted vs lewis

What is the difference between bronsted and lewis acid and bases and which is more common?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:38 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: strong and weak acid and bases
Replies: 2
Views: 24

strong and weak acid and bases

Should we be memorizing the strong and weak acids and bases, and if so, which ones?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:36 pm
Forum: Amphoteric Compounds
Topic: amphiprotic and amphoteric
Replies: 9
Views: 56

amphiprotic and amphoteric

What is the difference between amphiprotic and amphoteric?
by Sophia Dinh 1D
Sun Dec 01, 2019 11:36 pm
Forum: Amphoteric Compounds
Topic: Amphoteric Compounds
Replies: 2
Views: 16

Amphoteric Compounds

How can you tell if something is amphoteric?
by Sophia Dinh 1D
Sun Nov 17, 2019 9:09 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: polarity
Replies: 3
Views: 29

polarity

how can you tell if a bond is polar or non polar?
by Sophia Dinh 1D
Sun Nov 17, 2019 9:07 pm
Forum: Hybridization
Topic: d orbital
Replies: 3
Views: 21

d orbital

how does the introduction of the d orbital affect bond formation?
by Sophia Dinh 1D
Sun Nov 17, 2019 9:05 pm
Forum: Hybridization
Topic: hybridized
Replies: 1
Views: 14

hybridized

what does it mean when it says an atom become hybridized?
by Sophia Dinh 1D
Sun Nov 17, 2019 9:02 pm
Forum: Hybridization
Topic: Hybridization
Replies: 2
Views: 49

Hybridization

How do you find the hybridization of the neighboring atoms?
by Sophia Dinh 1D
Sun Nov 17, 2019 9:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 10
Views: 44

Lone Pairs

Why do lone pairs affect molecular geometry?
by Sophia Dinh 1D
Tue Nov 12, 2019 2:10 pm
Forum: Electronegativity
Topic: electronegativity
Replies: 5
Views: 43

electronegativity

What's the cut off point between polar and nonpolar in terms of electronegativity?
by Sophia Dinh 1D
Tue Nov 12, 2019 2:08 pm
Forum: Octet Exceptions
Topic: expanded octet
Replies: 7
Views: 67

expanded octet

When can you assume the octet can expand?
by Sophia Dinh 1D
Tue Nov 12, 2019 2:07 pm
Forum: Formal Charge and Oxidation Numbers
Topic: formal charge
Replies: 6
Views: 54

formal charge

How can you determine the formal charge without the equation?
by Sophia Dinh 1D
Tue Nov 12, 2019 2:06 pm
Forum: Sigma & Pi Bonds
Topic: Sigma and Pi Bonds
Replies: 8
Views: 42

Sigma and Pi Bonds

What are different about Sigma and Pi bonds?
by Sophia Dinh 1D
Tue Nov 12, 2019 2:05 pm
Forum: Dipole Moments
Topic: Dipoles
Replies: 2
Views: 21

Dipoles

When and why do dipoles occur?
by Sophia Dinh 1D
Sun Nov 03, 2019 9:30 pm
Forum: Formal Charge and Oxidation Numbers
Topic: formal charge
Replies: 4
Views: 27

formal charge

how do you find the formal charge and what is it used for?
by Sophia Dinh 1D
Sun Nov 03, 2019 9:29 pm
Forum: Octet Exceptions
Topic: Octet Exceptions
Replies: 7
Views: 63

Octet Exceptions

Which elements don't follow the octet rule and why?
by Sophia Dinh 1D
Sun Nov 03, 2019 9:29 pm
Forum: Bond Lengths & Energies
Topic: Bond Strength and Electronegativity
Replies: 3
Views: 18

Bond Strength and Electronegativity

How are bond strength and electronegativity related?
by Sophia Dinh 1D
Sun Nov 03, 2019 9:28 pm
Forum: Formal Charge and Oxidation Numbers
Topic: formal charge
Replies: 5
Views: 24

formal charge

Why when the formal charge is closer to 0 is the structure more stable?
by Sophia Dinh 1D
Sun Nov 03, 2019 9:27 pm
Forum: Resonance Structures
Topic: Resonance Structures
Replies: 1
Views: 23

Resonance Structures

Why are molecules with resonance more stable?
by Sophia Dinh 1D
Sun Oct 27, 2019 11:17 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Spins
Replies: 1
Views: 20

Spins

Are the spins all either -1/2 or +1/2?
by Sophia Dinh 1D
Sun Oct 27, 2019 11:16 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: F orbital
Replies: 1
Views: 22

F orbital

Why does the f orbital start at 4?
by Sophia Dinh 1D
Sun Oct 27, 2019 11:15 pm
Forum: Trends in The Periodic Table
Topic: Ionization Energy
Replies: 5
Views: 38

Ionization Energy

Why does ionization energy increase as you go from left to right even though more electrons are added?
by Sophia Dinh 1D
Sun Oct 27, 2019 11:14 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Penetration
Replies: 1
Views: 18

Penetration

What are the effects of penetration?
by Sophia Dinh 1D
Mon Oct 21, 2019 5:39 pm
Forum: Quantum Numbers and The H-Atom
Topic: Spin Quantum Number
Replies: 4
Views: 34

Spin Quantum Number

Why is the spin number important and what's the difference between up and down?
by Sophia Dinh 1D
Mon Oct 21, 2019 5:36 pm
Forum: *Shrodinger Equation
Topic: Schrodinger Equation
Replies: 2
Views: 45

Schrodinger Equation

what does Ψ mean and how is it used in the equation?
by Sophia Dinh 1D
Mon Oct 21, 2019 5:34 pm
Forum: Einstein Equation
Topic: units
Replies: 1
Views: 43

units

what is keV the unit for?
by Sophia Dinh 1D
Mon Oct 21, 2019 5:33 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: spins
Replies: 4
Views: 37

spins

How do you know if the spin is up or down?
by Sophia Dinh 1D
Mon Oct 21, 2019 5:33 pm
Forum: Photoelectric Effect
Topic: Intensity of Light
Replies: 4
Views: 34

Intensity of Light

Why does increasing intensity not eject an electron?
by Sophia Dinh 1D
Mon Oct 21, 2019 5:28 pm
Forum: Trends in The Periodic Table
Topic: Atomic Radii
Replies: 10
Views: 70

Atomic Radii

Why does atomic radii decrease even though the number of protons increase as you go across a period?
by Sophia Dinh 1D
Sun Oct 13, 2019 7:57 pm
Forum: Properties of Electrons
Topic: Balmer and Lyman series
Replies: 1
Views: 21

Balmer and Lyman series

What are the differences between the Balmer and Lyman series besides one of them being the visible region and the UV region?
by Sophia Dinh 1D
Sun Oct 13, 2019 7:55 pm
Forum: Photoelectric Effect
Topic: Threshold Energy
Replies: 4
Views: 42

Threshold Energy

Does the threshold energy vary depending on the element?
by Sophia Dinh 1D
Sun Oct 13, 2019 7:50 pm
Forum: Einstein Equation
Topic: E=hv
Replies: 5
Views: 46

E=hv

Can E=hv be used to calculate the energy required to remove an electron?
by Sophia Dinh 1D
Sun Oct 13, 2019 7:47 pm
Forum: DeBroglie Equation
Topic: De Broglie's Equation
Replies: 17
Views: 110

De Broglie's Equation

Why cant the De Broglie's equation be used for light?
by Sophia Dinh 1D
Sun Oct 13, 2019 7:45 pm
Forum: Photoelectric Effect
Topic: electrons
Replies: 2
Views: 40

electrons

How do electrons have wave-like properties, but at the same time have particle-like behavior?
by Sophia Dinh 1D
Fri Oct 04, 2019 6:43 pm
Forum: Empirical & Molecular Formulas
Topic: Chemical Formulas
Replies: 3
Views: 46

Chemical Formulas

When writing the empirical or molecular formula, does it matter which order the elements are in?
by Sophia Dinh 1D
Fri Oct 04, 2019 6:39 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: atomic weight, molecular weight, and formula weight
Replies: 2
Views: 37

atomic weight, molecular weight, and formula weight

How are atomic weight, molecular weight, and formula weight different?
by Sophia Dinh 1D
Thu Oct 03, 2019 3:41 pm
Forum: Balancing Chemical Reactions
Topic: State Symbols
Replies: 5
Views: 108

State Symbols

When writing chemical equations, should we include all the states of matter?
by Sophia Dinh 1D
Thu Oct 03, 2019 3:38 pm
Forum: Significant Figures
Topic: Sig Figs and Rounding
Replies: 4
Views: 54

Sig Figs and Rounding

Is it best to leave as many decimal places as possible during the steps and round sig figs at the end or would it be better to just round to the number of sig figs at each step?
by Sophia Dinh 1D
Thu Oct 03, 2019 2:22 pm
Forum: Empirical & Molecular Formulas
Topic: Molecular Formula
Replies: 1
Views: 58

Molecular Formula

If you're given the molecular mass for the compound and the mass percentages can you multiply the percentages into the molecular mass and find the grams of each compound that way or do you have to assume 100g?

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