Search found 40 matches

by 305303255
Tue Dec 03, 2019 9:05 am
Forum: Student Social/Study Group
Topic: Grades
Replies: 14
Views: 406

Grades

Do you all think that grades will be adjusted this quarter or is the average too high?
by 305303255
Tue Dec 03, 2019 9:03 am
Forum: Student Social/Study Group
Topic: Calming the Nerves
Replies: 4
Views: 110

Calming the Nerves

Does anybody have any tips for calming down so I can think straight during the final?
by 305303255
Tue Dec 03, 2019 9:01 am
Forum: Student Social/Study Group
Topic: Test Banks
Replies: 2
Views: 82

Test Banks

Do we have access to any test banks so we can practice some more?
by 305303255
Tue Dec 03, 2019 7:25 am
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: 6C.17
Replies: 1
Views: 55

6C.17

How do you find if something is a stronger base?

6C.17 Which is the stronger base, the hypobromite ion, BrO2, or morphine, C17H19O3N? Justify your answer.
by 305303255
Tue Dec 03, 2019 2:19 am
Forum: Conjugate Acids & Bases
Topic: 6A.1
Replies: 6
Views: 148

6A.1

How do you write formulas for conjugate acids?

6A.1 Write the formulas of the conjugate acids of (a) CH3NH2, methylamine; (b) NH2NH2, hydrazine; (c) HCO3-; and the conjugate bases of (d) HCO3-; (e) C6H5OH, phenol; (f) CH3COOH
by 305303255
Tue Nov 26, 2019 12:03 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: 9C.5
Replies: 1
Views: 31

9C.5

How do you know if a ligand can be polydentate?

9C.5 Which of the following ligands can be polydentate? If the ligand can be polydentate, give the maximum number of places on the ligand that can bind simultaneously to a single metal center: (a) HN(CH2CH2NH2)2; (b) CO322; (c) H2O; (d) oxalate.
by 305303255
Tue Nov 26, 2019 12:02 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: 9C.3
Replies: 4
Views: 82

9C.3

Can someone do part A as an example? 9C.3 Use the information in Table 9C.1 to write the formula for each of the following coordination compounds: (a) potassium hexacyanidochromate(III) (b) pentaamminesulfatocobalt(III) chloride (c) tetraamminediaquacobalt(III) bromide (d) sodium bisoxalato(diaqua)f...
by 305303255
Tue Nov 26, 2019 12:01 pm
Forum: Naming
Topic: 9C.1
Replies: 6
Views: 112

9C.1

Can someone help me out with this question?

9C.1 Name each of the following complex ions and identify the oxidation number of the metal: (a) [Fe(CN)6]4-; (b) [Co(NH3)6]3+; (c) [Co(CN)5(OH2)]2-; (d) [Co(NH3)5(SO4)]+.
by 305303255
Tue Nov 26, 2019 12:00 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Shapes
Replies: 4
Views: 55

Shapes

What are the different shapes of coordination compounds?
by 305303255
Tue Nov 26, 2019 11:58 am
Forum: Naming
Topic: Rules
Replies: 1
Views: 26

Rules

What are the rules for naming coordination compounds?
by 305303255
Sun Nov 17, 2019 6:20 pm
Forum: Hybridization
Topic: 2F.9
Replies: 1
Views: 64

2F.9

Can someone help me with this problem?

2F.9 Identify the hybrid orbitals used by the phosphorus atom in each of the following species: (a) PCl41; (b) PCl62; (c) PCl5; (d) PCl3.
by 305303255
Sun Nov 17, 2019 6:19 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2F.17
Replies: 1
Views: 33

2F.17

Can someone walk me through this problem?

2F.17 Describe the structure of the formaldehyde molecule, CH2O, in terms of hybrid orbitals, bond angles, and s- and p-bonds. The C atom is the central atom to which the other three atoms are attached.
by 305303255
Sun Nov 17, 2019 6:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone Pairs
Replies: 5
Views: 87

Lone Pairs

What are the shapes with lone pairs?
by 305303255
Sun Nov 17, 2019 6:13 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Shapes
Replies: 7
Views: 76

Shapes

What are all of the possible molecular shapes there can be?
by 305303255
Fri Nov 15, 2019 3:11 pm
Forum: Student Social/Study Group
Topic: test 2
Replies: 3
Views: 59

test 2

What is test 2 supposed to cover?
by 305303255
Sun Nov 10, 2019 6:09 pm
Forum: Hybridization
Topic: 2F.5
Replies: 4
Views: 55

2F.5

How do you find the hybridization?

2F.5 State the hybridization of the atom in boldface red type in each of the following molecules and ions: (a) BeCl2; (b) BH3; (c) BH42; (d) SiF4.
by 305303255
Sun Nov 10, 2019 6:07 pm
Forum: Hybridization
Topic: 2F.1
Replies: 2
Views: 49

2F.1

How do you do problems like this?

2F.1 State the relative orientations of each of the following hybrid orbitals: (a) sp3; (b) sp; (c) sp3d2; (d) sp2.
by 305303255
Sun Nov 10, 2019 6:06 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.27
Replies: 1
Views: 33

2E.27

How do you know when a molecule is polar or nonpolar? What are the differences? 2E.27 Predict whether each of the following molecules is likely to be polar or nonpolar: (a) C5H5N (pyridine, a molecule like benzene except that one OCHO group is replaced by a nitrogen atom); (b) C2H6 (ethane); (c) CHC...
by 305303255
Sun Nov 10, 2019 6:05 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: 2E.17
Replies: 2
Views: 53

2E.17

How do you find the bond angles like in these questions?

2E.17 Predict the bond angles at the central atom of the following molecules and ions: (a) ozone, O3; (b) azide ion, N32; (c) cyanate ion, CNO2; (d) hydronium ion, H3O1.
by 305303255
Sun Nov 10, 2019 6:00 pm
Forum: Student Social/Study Group
Topic: Chemistry Youtube Channels
Replies: 8
Views: 141

Chemistry Youtube Channels

Does anyone have any recommendations for youtube channels that can I can refer to if I need help with any topics I have trouble with in this class?
by 305303255
Sun Nov 03, 2019 11:55 pm
Forum: Lewis Structures
Topic: Inorganic vs Organic vs Biological
Replies: 1
Views: 51

Inorganic vs Organic vs Biological

How are Lewis Structures different for inorganic, organic, and biological compounds?
by 305303255
Sun Nov 03, 2019 11:54 pm
Forum: Lewis Structures
Topic: 2C.11
Replies: 1
Views: 26

2C.11

Can someone help me out with this question?

2C.11 Draw the Lewis structure and state the number of lone pairs on xenon, the central atom of each of the following mole- cules: (a) XeOF2; (b) XeF4; (c) XeOF4.
by 305303255
Sun Nov 03, 2019 11:51 pm
Forum: Bond Lengths & Energies
Topic: Covalent Bond Lengths
Replies: 1
Views: 41

Covalent Bond Lengths

What are different factors that affect covalent bond lengths?
by 305303255
Sun Nov 03, 2019 11:50 pm
Forum: Resonance Structures
Topic: Resonance Structure
Replies: 2
Views: 62

Resonance Structure

How do you draw resonance structures?
by 305303255
Sun Nov 03, 2019 11:49 pm
Forum: Bond Lengths & Energies
Topic: 2D.19
Replies: 2
Views: 45

2D.19

How do I find bond length with covalent radii?

2D.19 Use the covalent radii in Fig. 2D.11 to calculate the bond lengths in the following molecules. Account for the trends in your calculated values: (a) CF4; (b) SiF4; (c) SnF4.
by 305303255
Sun Oct 27, 2019 11:18 pm
Forum: Bond Lengths & Energies
Topic: Bond Length (2D.13)
Replies: 2
Views: 42

Bond Length (2D.13)

How do you find bond length?

2D.13 Place the following molecules or ions in order of decreas- ing bond length: (a) the CO bond in CO, CO2, CO322; (b) the SO bond in SO2, SO3, SO322; (c) the CN bond in HCN, CH2NH, CH3NH2. Explain your reasoning.
by 305303255
Sun Oct 27, 2019 10:28 pm
Forum: Electronegativity
Topic: Finding Electronegativity
Replies: 2
Views: 67

Finding Electronegativity

Can someone help me out with this please?

2D.1 Place the following elements in order of increasing electro-
negativity: antimony, tin, selenium, and indium.
by 305303255
Sun Oct 27, 2019 10:25 pm
Forum: Octet Exceptions
Topic: Radicals
Replies: 9
Views: 156

Radicals

How do you know if species are radicals?
by 305303255
Sun Oct 27, 2019 10:21 pm
Forum: Ionic & Covalent Bonds
Topic: Valence Electrons
Replies: 3
Views: 37

Valence Electrons

How do you find the number of valence electrons in an element?
by 305303255
Sun Oct 27, 2019 8:20 pm
Forum: Lewis Structures
Topic: Drawing Lewis Structures
Replies: 5
Views: 59

Drawing Lewis Structures

Can someone give me a quick summary on drawing lewis structures?
by 305303255
Sun Oct 20, 2019 8:23 pm
Forum: Properties of Light
Topic: Unit for Wavelength
Replies: 34
Views: 383

Re: Unit for Wavelength

The unit is meters, but can also be a variation of that like nano- and pico- meters
by 305303255
Sun Oct 20, 2019 8:22 pm
Forum: *Black Body Radiation
Topic: Energy of photons
Replies: 4
Views: 184

Re: Energy of photons

E=hv measures the energy of a photon, while E=1/2mv^2 measures kinetic energy.
by 305303255
Sun Oct 20, 2019 8:16 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Pauli Exclusion Principle
Replies: 9
Views: 514

Re: Pauli Exclusion Principle

It basically says that an orbital can only have a max of 2 electrons, and that 2 electrons can't have the same sign.
by 305303255
Sun Oct 20, 2019 8:01 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 1E-11
Replies: 4
Views: 63

1E-11

Can somebody help me out and give a quick summary of how you find an electron configuration by doing it for one of the atoms in 1E-11?

Write the ground-state electron configuration for each of the following atoms: (a) sodium; (b) silicon; (c) chlorine; (d) rubidium.
by 305303255
Sun Oct 20, 2019 7:54 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 1D-15
Replies: 3
Views: 49

1D-15

Can somebody explain how you find angular momentum quantum numbers like in this question?

What are the principal and orbital angular momentum quantum numbers for each of the following orbitals: (a) 6p; (b) 3d; (c) 2p; (d) 5f?
by 305303255
Sun Oct 13, 2019 9:28 pm
Forum: Properties of Electrons
Topic: wave-like vs particle-like
Replies: 2
Views: 25

wave-like vs particle-like

Can someone explain to me the difference between wave-like and particle-like properties?
by 305303255
Sun Oct 13, 2019 8:28 pm
Forum: Properties of Light
Topic: 1B.23
Replies: 1
Views: 14

Re: 1B.23

When you know the wavelength you can find the frequency by using the formula λ v = c, where v is the frequency (nu) and c is a constant for the speed of light. Once you find the frequency you can use the equation f (aka nu) = velocity/λ . I hope this helps!
by 305303255
Sun Oct 13, 2019 8:24 pm
Forum: Properties of Light
Topic: hw problem 1A.7
Replies: 3
Views: 46

Re: hw problem 1A.7

The way I did this problem was by using the equation: λ v = c, where v is the frequency and c is a constant for the speed of light. That number that you saw is "c." I hope this helps!
by 305303255
Sun Oct 13, 2019 7:49 pm
Forum: Molarity, Solutions, Dilutions
Topic: Molarity and Molality
Replies: 2
Views: 178

Re: Molarity and Molality

Molarity is the moles of solute per liter of the solution and molality is the moles of solute per kilogram of the solvent. Thank you to Khan Academy for educating us :)
by 305303255
Sun Oct 13, 2019 7:41 pm
Forum: Administrative Questions and Class Announcements
Topic: Modules
Replies: 3
Views: 39

Re: Modules

I believe that he will be posting more as we go through the material.

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