Search found 57 matches

by tonyhu
Fri Dec 06, 2019 6:44 pm
Forum: Naming
Topic: Do we put metal last in the name?
Replies: 1
Views: 29

Do we put metal last in the name?

Or do we follow the order by the chemical name
by tonyhu
Fri Dec 06, 2019 6:43 pm
Forum: Naming
Topic: How to find out the oxidation number?
Replies: 3
Views: 36

How to find out the oxidation number?

Like the Fe in porphyrins especially
by tonyhu
Fri Dec 06, 2019 6:42 pm
Forum: Properties & Structures of Inorganic & Organic Bases
Topic: What makes an acid more corrosive?
Replies: 1
Views: 44

What makes an acid more corrosive?

I heard that concentration did not matter?
by tonyhu
Wed Nov 27, 2019 12:14 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Acid/base strength?
Replies: 4
Views: 41

Acid/base strength?

What determines the strengths of acids and bases? Is it concentration?
by tonyhu
Wed Nov 27, 2019 12:13 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: How to take the log to get the pH?
Replies: 8
Views: 61

How to take the log to get the pH?

What does the math function mean?
by tonyhu
Wed Nov 27, 2019 12:12 pm
Forum: Bronsted Acids & Bases
Topic: Difference between bronsted and lewis acid/base?
Replies: 6
Views: 37

Difference between bronsted and lewis acid/base?

Which one do we use to define base/acid?
by tonyhu
Wed Nov 27, 2019 12:12 pm
Forum: Lewis Acids & Bases
Topic: Lewis acid vs regular acid?
Replies: 4
Views: 28

Lewis acid vs regular acid?

What is the difference?
by tonyhu
Wed Nov 27, 2019 12:11 pm
Forum: Lewis Acids & Bases
Topic: What is the correct definition of a base?
Replies: 5
Views: 51

What is the correct definition of a base?

And difference between base and lewis base?
by tonyhu
Tue Nov 19, 2019 11:54 am
Forum: Hybridization
Topic: test 2
Replies: 6
Views: 58

test 2

Is hybridization going to be the main topic on test 2?
by tonyhu
Tue Nov 19, 2019 11:53 am
Forum: Hybridization
Topic: What are pi bonds in relation to sigma?
Replies: 2
Views: 21

What are pi bonds in relation to sigma?

Why can pi bonds only be formed when sigma bonds are already formed?
by tonyhu
Tue Nov 19, 2019 11:53 am
Forum: Hybridization
Topic: How to do 2.F.7?
Replies: 1
Views: 19

How to do 2.F.7?

Is orbitals counted by number of bonds + lone pairs?
by tonyhu
Tue Nov 19, 2019 11:52 am
Forum: Hybridization
Topic: Is hybridized orbitals all weighed equally in character?
Replies: 4
Views: 31

Is hybridized orbitals all weighed equally in character?

for example, is sp2 33% s?
by tonyhu
Tue Nov 19, 2019 11:52 am
Forum: Hybridization
Topic: When does hybridization not apply?
Replies: 1
Views: 25

When does hybridization not apply?

Or is it always applied?
by tonyhu
Thu Nov 14, 2019 3:58 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: why are double bonds equally weighted as single ones when drawing models?
Replies: 10
Views: 85

why are double bonds equally weighted as single ones when drawing models?

shouldn't there be twice as much e- and therefore twice as much weight?
by tonyhu
Thu Nov 14, 2019 3:57 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Do we need to know bent structures?
Replies: 5
Views: 43

Do we need to know bent structures?

do we need them for the test?
by tonyhu
Thu Nov 14, 2019 3:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Trigonal pyramidal angles
Replies: 4
Views: 34

Trigonal pyramidal angles

Why are the angles 109.5? they don't add up to 360?
by tonyhu
Thu Nov 14, 2019 3:55 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: How do we experimentally determine shapes?
Replies: 1
Views: 24

How do we experimentally determine shapes?

VSEPR model is based off experiments, but how could we have seen the shapes in real life?
by tonyhu
Thu Nov 14, 2019 3:54 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: How to study for test 2?
Replies: 3
Views: 37

How to study for test 2?

Is it going to be just on VSEPR?
by tonyhu
Thu Nov 07, 2019 10:30 am
Forum: Octet Exceptions
Topic: Why can't Aluminum have an expanded octet?
Replies: 5
Views: 96

Why can't Aluminum have an expanded octet?

Does Al not have access to the d orbitals? why?
by tonyhu
Thu Nov 07, 2019 10:30 am
Forum: Bond Lengths & Energies
Topic: Resonance structure bond lengths?
Replies: 3
Views: 47

Resonance structure bond lengths?

So we talked about in lecture about how the bond length in a resonance structure is a number in between the two types of bonds because the e- forms a cloud. If that is the case, how could this cloud of electrons have a bond length at all?
by tonyhu
Thu Nov 07, 2019 10:29 am
Forum: Lewis Structures
Topic: Lewis acids and bases?
Replies: 7
Views: 50

Lewis acids and bases?

Do we need to know the lewis acids and bases for the next test?
by tonyhu
Thu Nov 07, 2019 10:28 am
Forum: Lewis Structures
Topic: Does the shape that I draw the Lewis structure matter?
Replies: 14
Views: 87

Does the shape that I draw the Lewis structure matter?

Like say I have C02, could i have the Oxygens sandwich the carbon, as well as one above, and one below the carbon?
by tonyhu
Wed Oct 30, 2019 11:25 pm
Forum: Trends in The Periodic Table
Topic: Does H have the highest ionization energy?
Replies: 4
Views: 38

Does H have the highest ionization energy?

Since it only has one electron?
by tonyhu
Wed Oct 30, 2019 11:24 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: D orbital
Replies: 5
Views: 44

D orbital

Why does it have 5 orbitals? Does it mean it can hold 10 electrons?
by tonyhu
Wed Oct 30, 2019 11:21 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: What are the octet exceptions?
Replies: 11
Views: 83

What are the octet exceptions?

And why?
by tonyhu
Wed Oct 30, 2019 11:20 pm
Forum: Electronegativity
Topic: Electron Negativity vs affinity?
Replies: 5
Views: 35

Electron Negativity vs affinity?

If they follow the same trends on the periodic table, why do we keep these separate measurements?
by tonyhu
Wed Oct 23, 2019 11:34 pm
Forum: Ionic & Covalent Bonds
Topic: How are lewis structures filled?
Replies: 6
Views: 48

How are lewis structures filled?

Does one side have to be filled first before others are filled?
by tonyhu
Wed Oct 23, 2019 11:33 pm
Forum: Ionic & Covalent Bonds
Topic: What are the exceptions to the octet rule?
Replies: 5
Views: 72

What are the exceptions to the octet rule?

H, He, and what else?
by tonyhu
Wed Oct 23, 2019 11:32 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: How do i do 1.D.25?
Replies: 2
Views: 34

How do i do 1.D.25?

What is the orbital g?
by tonyhu
Wed Oct 23, 2019 11:28 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: how to do 1.D.23?
Replies: 2
Views: 40

how to do 1.D.23?

The answer key says 6 orbitals can have n=2 l=1, how is that possible?
by tonyhu
Sun Oct 20, 2019 3:37 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Inverse Relation
Replies: 3
Views: 66

Inverse Relation

Why is uncertainty in momentum and position inversely related?
by tonyhu
Sun Oct 20, 2019 3:36 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty value
Replies: 4
Views: 35

Uncertainty value

If the uncertainty in position is + - 5 mm, would the uncertainty be 10mm or 5mm?
by tonyhu
Sun Oct 20, 2019 3:35 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: 1.B.27
Replies: 1
Views: 37

1.B.27

I cannot seem to find the right solution to this question, could somebody please explain to me the processes?
by tonyhu
Sun Oct 20, 2019 3:34 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: 1.B.15?
Replies: 2
Views: 19

1.B.15?

Could anybody explain this homework assignment to me?
by tonyhu
Sun Oct 20, 2019 3:33 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: What does the H mean?
Replies: 9
Views: 57

What does the H mean?

What does the h with the dash mean? Is it the same as me just using h/4pi ?
by tonyhu
Thu Oct 10, 2019 9:27 pm
Forum: Properties of Light
Topic: Homework question 1E.5?
Replies: 1
Views: 65

Homework question 1E.5?

Couldn't figure it out, help me out please!
by tonyhu
Thu Oct 10, 2019 9:26 pm
Forum: Properties of Light
Topic: Homework question 1D11?
Replies: 1
Views: 31

Homework question 1D11?

Thank you!
by tonyhu
Thu Oct 10, 2019 9:24 pm
Forum: Properties of Light
Topic: Speed of light
Replies: 9
Views: 66

Speed of light

How can problems require us to use constant c=speed of light, when speed of light differs across mediums?
by tonyhu
Thu Oct 10, 2019 9:23 pm
Forum: Properties of Light
Topic: models of light
Replies: 5
Views: 80

models of light

How are the two models -photon and wave model- different? How are they useful in their own way?
by tonyhu
Thu Oct 10, 2019 9:22 pm
Forum: Properties of Light
Topic: Electromagnetic Spectrum
Replies: 4
Views: 53

Electromagnetic Spectrum

For the course, do we need to memorize the wavelenghts of different waves like visible light?
by tonyhu
Thu Oct 03, 2019 5:25 pm
Forum: Properties of Light
Topic: What does μm mean?
Replies: 4
Views: 77

What does μm mean?

Saw it on the electromagnetic spectrum in one of the questions, what does it mean?
by tonyhu
Thu Oct 03, 2019 5:22 pm
Forum: Properties of Light
Topic: Frequency and Hertz
Replies: 5
Views: 59

Re: Frequency and Hertz

Oscillation by itself is a unit, hence it is oscillation/s = hertz
by tonyhu
Thu Oct 03, 2019 5:20 pm
Forum: Properties of Light
Topic: homework problem
Replies: 1
Views: 31

homework problem

How would one calculate 1A.8? Thanks in advance.
by tonyhu
Thu Oct 03, 2019 5:18 pm
Forum: Properties of Light
Topic: CHEM 1A
Replies: 2
Views: 44

CHEM 1A

What happens to the energy between the energy levels? The book says that the energy is carried away by electromagnetic radiations from the atom, but wouldn't that be light still?
by tonyhu
Thu Oct 03, 2019 5:16 pm
Forum: Properties of Light
Topic: Homework question
Replies: 1
Views: 45

Homework question

How do you do 1A: 3 ?

Which ones would decrease?
by tonyhu
Sun Sep 29, 2019 1:30 pm
Forum: Molarity, Solutions, Dilutions
Topic: Dilution
Replies: 9
Views: 172

Re: Dilution

Even though some mols of substance is diluted in another container, those specific mols do not change as mols measure an actual amount and not a concentration.
by tonyhu
Sun Sep 29, 2019 1:29 pm
Forum: Molarity, Solutions, Dilutions
Topic: homework question G5
Replies: 2
Views: 41

homework question G5

Doesn't it just dissolve into ions or is there a more complicated solution?
by tonyhu
Sun Sep 29, 2019 1:26 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: How was a mole originally determined?
Replies: 3
Views: 60

How was a mole originally determined?

Why is it supposed to be 6.022 * 10^23? Who made the avocado's number? Who is Avocado?
by tonyhu
Sun Sep 29, 2019 1:20 pm
Forum: Balancing Chemical Reactions
Topic: Equations Balancing
Replies: 6
Views: 138

Equations Balancing

Is there a faster method than the brute force method to try to balance equations? For now I just compute every possibility. Anything more efficient? What are some tricks?
by tonyhu
Sun Sep 29, 2019 1:19 pm
Forum: Balancing Chemical Reactions
Topic: Equations
Replies: 5
Views: 137

Equations

Say there's an equation H+O2 -> and you have to balance it.
However, where do the extra elements come from?
by tonyhu
Sun Sep 29, 2019 1:14 pm
Forum: Significant Figures
Topic: How to do sig figs multiplication?
Replies: 2
Views: 30

How to do sig figs multiplication?

Say I have the equation 7.1 * 8.25 = x

how many sig figs would I have in the answer?

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