Search found 51 matches

by 305339018
Sat Dec 07, 2019 4:25 pm
Forum: General Science Questions
Topic: Final exam
Replies: 3
Views: 264

Final exam

What are the past averages on Lavelle's final exams?? I am freaking out
by 305339018
Wed Dec 04, 2019 1:41 am
Forum: Lewis Acids & Bases
Topic: Examples of acids
Replies: 1
Views: 28

Examples of acids

How is an orange a stronger acid than vinegar?
by 305339018
Wed Dec 04, 2019 1:39 am
Forum: General Science Questions
Topic: Aqueous
Replies: 3
Views: 191

Aqueous

Why does aqueous matter and are we going to need to know it for the final exam?
by 305339018
Wed Dec 04, 2019 1:36 am
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charge for H20+HCl-->H30++Cl-(aq)
Replies: 1
Views: 93

Formal charge for H20+HCl-->H30++Cl-(aq)

How do we calculate the formal charge for cation and anion?
by 305339018
Wed Dec 04, 2019 1:24 am
Forum: Lewis Acids & Bases
Topic: Strong Acids
Replies: 6
Views: 78

Strong Acids

What makes something a strong acid?
by 305339018
Wed Dec 04, 2019 1:23 am
Forum: General Science Questions
Topic: Practice with pH calculations
Replies: 1
Views: 88

Practice with pH calculations

What's the pH of [H+]=10^-5? What are the steps to finding the pH?
by 305339018
Mon Dec 02, 2019 1:08 am
Forum: Administrative Questions and Class Announcements
Topic: Curving in Chem 14A
Replies: 7
Views: 236

Curving in Chem 14A

Does Professor Lavelle curve any exams or the final grade?
by 305339018
Mon Dec 02, 2019 1:06 am
Forum: Administrative Questions and Class Announcements
Topic: Retaking Chem 14A
Replies: 2
Views: 63

Retaking Chem 14A

I'm scared that my final grade won't be as high as I would like it to be so I was wondering if I should retake chem 14A next quarter?
by 305339018
Mon Dec 02, 2019 1:04 am
Forum: Administrative Questions and Class Announcements
Topic: Calculators on Final
Replies: 6
Views: 83

Calculators on Final

Do any of you know if calculators will be allowed on the final exam? On test 2 we couldn't use calculators so that's why I'm asking.
by 305339018
Mon Dec 02, 2019 1:03 am
Forum: Administrative Questions and Class Announcements
Topic: Lavelle review sessions
Replies: 3
Views: 70

Lavelle review sessions

Will professor Lavelle be hosting any study sessions? I know he has UA's who do some but will THE Laurence Lavelle be hosting any?
by 305339018
Mon Dec 02, 2019 1:01 am
Forum: Administrative Questions and Class Announcements
Topic: Final tips
Replies: 19
Views: 308

Final tips

Hello I wanted to know if there will be any study tips you guys have that I could use for the final? Thank you very much.
by 305339018
Sun Nov 24, 2019 11:51 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular shape and central atom
Replies: 3
Views: 61

Molecular shape and central atom

What is the molecular shape if the central atom is found in group 12?
by 305339018
Sun Nov 24, 2019 11:51 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Molecular shape of carbon Dioxide
Replies: 10
Views: 99

Molecular shape of carbon Dioxide

What is the molecular shape off carbon dioxide?
by 305339018
Sun Nov 24, 2019 11:49 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: electron and molecular geometry of H20
Replies: 3
Views: 47

electron and molecular geometry of H20

Can you verify the electron and molecular geometry of H20?
by 305339018
Sun Nov 24, 2019 11:47 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Methanol's shape
Replies: 1
Views: 42

Methanol's shape

what is methanol's shape?
by 305339018
Sun Nov 24, 2019 11:46 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Electron pair geometry
Replies: 1
Views: 43

Electron pair geometry

what is the electron pair geometry of NCL2?
by 305339018
Sun Nov 17, 2019 3:02 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR shape clarification
Replies: 2
Views: 32

VSEPR shape clarification

Why are VSEPR molecular geometries and bond angles based on the lone pairs and bonded atoms?
by 305339018
Sun Nov 17, 2019 3:00 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Linear Molecular Shape
Replies: 1
Views: 24

Linear Molecular Shape

Can someone please give me an example of a Linear Molecular Shape and how did you find that example?
by 305339018
Sun Nov 17, 2019 2:58 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR shape question
Replies: 2
Views: 20

VSEPR shape question

What VSEPR shape has 2 bonding pairs and 0 lone pairs?
by 305339018
Sun Nov 17, 2019 2:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Different type of Molecular Shapes
Replies: 2
Views: 22

Different type of Molecular Shapes

What is the difference between Linear, Trigonal Planar, and bent?
by 305339018
Sun Nov 17, 2019 2:54 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSERP Theory
Replies: 1
Views: 17

VSERP Theory

How do you find the bond present in Sulfur Dioxide?
by 305339018
Mon Nov 11, 2019 12:06 am
Forum: Electronegativity
Topic: Electronegativity between Oxygen and nitrogen
Replies: 2
Views: 31

Electronegativity between Oxygen and nitrogen

Why is oxygen more electronegative than nitrogen?
by 305339018
Mon Nov 11, 2019 12:02 am
Forum: Dipole Moments
Topic: Dipole moment of ground state
Replies: 1
Views: 32

Dipole moment of ground state

How would we find the dipole moment of a ground state?
by 305339018
Mon Nov 11, 2019 12:00 am
Forum: Lewis Structures
Topic: Polar and Non polar covalent bonds in lewis structures
Replies: 5
Views: 55

Polar and Non polar covalent bonds in lewis structures

Do we need to identify polar and non polar covalent bonds in lewis structures?
by 305339018
Sun Nov 10, 2019 11:53 pm
Forum: Ionic & Covalent Bonds
Topic: Water molecules and ionic substances
Replies: 5
Views: 91

Water molecules and ionic substances

what is the feature of water molecules that enables ionic substances to dissolve in water?
by 305339018
Sun Nov 10, 2019 11:47 pm
Forum: Sigma & Pi Bonds
Topic: Chemical Bonds in chemistry
Replies: 3
Views: 43

Chemical Bonds in chemistry

What are the 3 major chemical bonds in chemistry and what do they do?
by 305339018
Mon Nov 04, 2019 12:04 am
Forum: Ionic & Covalent Bonds
Topic: Melting points of ionic substances
Replies: 1
Views: 73

Melting points of ionic substances

What are the two factors that affect the melting points of ionic substances?
by 305339018
Sun Nov 03, 2019 11:57 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Solids
Replies: 2
Views: 66

Ionic Solids

In an Ionic solid what is each electron localized around?
by 305339018
Sun Nov 03, 2019 11:44 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic bonds being held together
Replies: 3
Views: 47

Ionic bonds being held together

What are two ions in an ionic bonds held together by?
by 305339018
Sun Nov 03, 2019 11:33 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonds and unpaired electrons
Replies: 2
Views: 44

Covalent Bonds and unpaired electrons

Why is it that the number of covalent bonds anatomical can form is the same as the number unpaired electrons in its valence shells?
by 305339018
Sun Oct 27, 2019 11:05 pm
Forum: Ionic & Covalent Bonds
Topic: using the octet rule
Replies: 2
Views: 47

using the octet rule

Is there a specific rule to when to apply the octet rule? I know it can be applied to covalent bonds but my question here is if we can also apply them to ionic bonds.
by 305339018
Sun Oct 27, 2019 11:03 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent bonds and cations
Replies: 3
Views: 46

Covalent bonds and cations

How does the fact that a non-metals. ionization energy level being too high affect its ability to form cations?
by 305339018
Sun Oct 27, 2019 11:01 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bonds confusion
Replies: 7
Views: 105

Ionic Bonds confusion

Can Ionic compounds transfer Dots (e-) from nonmetal to metal or can it only transfer it from metal to nonmetal?
by 305339018
Sun Oct 27, 2019 11:00 pm
Forum: Lewis Structures
Topic: Lewis symbols
Replies: 5
Views: 72

Lewis symbols

I know one dot represents a single e- in orbital and two dots represents 2 paired e- in the same orbital but how many other dots are there?
by 305339018
Sun Oct 27, 2019 10:55 pm
Forum: Bond Lengths & Energies
Topic: Chemical Bonds
Replies: 4
Views: 65

Chemical Bonds

What is the reason behind why chemical bonds form? I know it's because bond atoms have lower energy that separate atoms but that doesn't make sense to me.
by 305339018
Sun Oct 20, 2019 4:53 pm
Forum: Properties of Electrons
Topic: Quantum numbers
Replies: 4
Views: 73

Quantum numbers

Why is it that no two electrons in the same atom have the same four quantum numbers?
by 305339018
Sun Oct 20, 2019 4:51 pm
Forum: Quantum Numbers and The H-Atom
Topic: Wave functions
Replies: 2
Views: 38

Wave functions

Do we always have to use a wave function to describe an e- in an atom?
by 305339018
Sun Oct 20, 2019 4:50 pm
Forum: Quantum Numbers and The H-Atom
Topic: Light photons
Replies: 1
Views: 42

Light photons

When light photons are scattered from e- why does the momentum and position of e- get affected?
by 305339018
Sun Oct 20, 2019 4:44 pm
Forum: Quantum Numbers and The H-Atom
Topic: Matter and wavelike properties
Replies: 3
Views: 49

Matter and wavelike properties

Since all matter has wavelike properties why is it that it can only be noticed for moving objects with extremely small mass.
by 305339018
Sun Oct 20, 2019 4:42 pm
Forum: Quantum Numbers and The H-Atom
Topic: Diffraction patterns
Replies: 1
Views: 46

Diffraction patterns

Where do diffraction patterns result from? Please explain in depth.
by 305339018
Thu Oct 10, 2019 10:34 pm
Forum: Properties of Light
Topic: Quantum mechanics description of light
Replies: 2
Views: 45

Quantum mechanics description of light

Why does a shorter lambda light eject e- from the metal surface while a longer lambda light doesn't?
by 305339018
Thu Oct 10, 2019 10:31 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect diagram
Replies: 3
Views: 81

Photoelectric Effect diagram

Why would the detector be the one to figure the speed of the electron? Why would it even want to find out the speed?
by 305339018
Thu Oct 10, 2019 10:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Extra help
Replies: 8
Views: 161

Extra help

Hello I was wondering if there are any online resources that some of you can recommend to me that will help me with chemistry? thank you!
by 305339018
Thu Oct 10, 2019 10:22 pm
Forum: Properties of Light
Topic: Direct and Indirect relationships
Replies: 2
Views: 44

Direct and Indirect relationships

How would we able to identify if two variables have a direct or indirect relationship? I'm very confused on this.
by 305339018
Thu Oct 10, 2019 10:19 pm
Forum: Properties of Light
Topic: Relationship between lambda and nu
Replies: 5
Views: 120

Relationship between lambda and nu

What would the relationship be between Lambda and Nu? How would one affect the other? thank you so much!
by 305339018
Thu Oct 10, 2019 10:17 pm
Forum: Properties of Light
Topic: Wavelength help
Replies: 3
Views: 46

Wavelength help

If the wavelength of a proton increases what would happen to the photons energy?
by 305339018
Thu Oct 03, 2019 11:51 pm
Forum: Limiting Reactant Calculations
Topic: Percent or theoretical yield
Replies: 14
Views: 725

Percent or theoretical yield

Hello everyone. I had a quick question on whether or not there is a difference between percent yield and theoretical yield. I have seen both be used in chemistry problems and I was confused as to whether they are two completely different things. Thank you very much for the help!
by 305339018
Thu Oct 03, 2019 11:46 pm
Forum: Balancing Chemical Reactions
Topic: homework question M15
Replies: 4
Views: 85

homework question M15

When we balance chemical equations how do we know when we are supposed to convert it to grams? If I don't do that what will happen, do you think I would get the question entirely wrong or would I get partial points? thank you very much!!
by 305339018
Thu Oct 03, 2019 11:33 pm
Forum: Molarity, Solutions, Dilutions
Topic: HW question G15a
Replies: 1
Views: 45

HW question G15a

Hello in part A it's asking to calculate Vi of NA2CO3 but the thing is how do we know which one is Vi or which one is Mi? Thank you!
by 305339018
Thu Oct 03, 2019 11:31 pm
Forum: Molarity, Solutions, Dilutions
Topic: HW question G11
Replies: 3
Views: 41

HW question G11

I don't understand why we need to isolate the liters of the solution. What would that accomplish?
by 305339018
Thu Oct 03, 2019 8:55 pm
Forum: Balancing Chemical Reactions
Topic: HW question M15
Replies: 2
Views: 75

HW question M15

For part B of the problem it is asking "What mass of aluminum chloride can be produced by these reactants" and my chemistry tutor said we must use the limiting reactant to find the theoretical yield but I don't know why we can't use the excess reactant to find the yield.

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