Search found 18 matches

by Dayanara Ruiz
Thu Dec 07, 2017 2:58 pm
Forum: SI Units, Unit Conversions
Topic: Titrations [ENDORSED]
Replies: 1
Views: 170

Titrations [ENDORSED]

Do we need to know about titrations? If yes, what ?
by Dayanara Ruiz
Thu Dec 07, 2017 2:51 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Diamagnetic VS Paramagnetic [ENDORSED]
Replies: 2
Views: 320

Diamagnetic VS Paramagnetic [ENDORSED]

Can someone explain the terms? To what extent should we know it for the final?
by Dayanara Ruiz
Sat Dec 02, 2017 3:54 pm
Forum: Biological Examples
Topic: Biological Importance
Replies: 1
Views: 205

Biological Importance

For the biological importance, chapter 17, how much should we know for the final? Myoglobin? Hemoglobin? Any others?
by Dayanara Ruiz
Sat Dec 02, 2017 3:49 pm
Forum: Naming
Topic: naming compounds [ENDORSED]
Replies: 3
Views: 207

Re: naming compounds [ENDORSED]

For naming compounds, you should focus on knowing monodentate, and the polydentades; bidentate, tridentate: dien, and the hexadentate: edta.
by Dayanara Ruiz
Thu Nov 23, 2017 11:11 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: "Phase"
Replies: 5
Views: 235

Re: "Phase"

"Phase" refers to the state in which it can be found, i.e. gas. You can have a homogenous phases (same phase) or a heterogeneous phase (different phases).
by Dayanara Ruiz
Thu Nov 23, 2017 11:07 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Shifted VS Lie
Replies: 2
Views: 149

Shifted VS Lie

What is the difference between the wording of a problem with:
a.) Reaction is said to "lie" to the left?
b.) Equilibrium is said to be "shifted" to the left?
by Dayanara Ruiz
Thu Nov 16, 2017 11:42 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 2
Views: 141

Re: Bond Angles

You look at the shape/position of the angles.
by Dayanara Ruiz
Thu Nov 16, 2017 11:41 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: VSEPR Notation
Replies: 2
Views: 167

VSEPR Notation

Can someone explain what the "A" in the VSEPR notation AXE applies to?
by Dayanara Ruiz
Sun Nov 12, 2017 5:06 pm
Forum: Resonance Structures
Topic: Understanding Resonance Structures
Replies: 6
Views: 382

Re: Understanding Resonance Structures

If a molecule has multiple resonance structures it just means that it has a double bond that can be placed in multiple locations without disrupting the stability and formal charge. In nature ti can be assumed that a from of all combined resonances makes up the atom but for drawing purposes you must ...
by Dayanara Ruiz
Sun Nov 12, 2017 5:02 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 3.9 and 3.11 in the homework? I am confused as to what it is they are asking
Replies: 3
Views: 259

Re: 3.9 and 3.11 in the homework? I am confused as to what it is they are asking

The best way to memorize this is to do the opposite of what the sign is asking for, 3+ion means you take away 3 (-3) electrons from the configuration. This makes it easier to look for the element, which should be three elements to the right.
by Dayanara Ruiz
Sun Nov 05, 2017 3:44 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: d and s blocks
Replies: 16
Views: 724

Re: d and s blocks

Simplest Answer: The energy level in the d block is less than the energy level in the d block.
by Dayanara Ruiz
Sun Nov 05, 2017 3:41 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Formal charge and lewis structures
Replies: 5
Views: 230

Re: Formal charge and lewis structures

I also agree it depends on the question being asked. I personally would study, and be comfortable drawing out the simplest structure but also know the differences of the other structures.
by Dayanara Ruiz
Sat Oct 21, 2017 6:03 pm
Forum: Properties of Light
Topic: test 2 topic
Replies: 9
Views: 596

Re: test 2 topic

I suggest asking your TA or Lavelle, but definitely do many homework problems, and understand the examples he does in class. Give the chapter a quick read would not hurt to better supplement the material.
by Dayanara Ruiz
Sat Oct 21, 2017 5:57 pm
Forum: SI Units, Unit Conversions
Topic: Prefixes [ENDORSED]
Replies: 6
Views: 442

Re: Prefixes [ENDORSED]

As long as you know the most used forms, mili, kilo, nano, you should be fine. But memorizing the lists above are super helpful too.
by Dayanara Ruiz
Fri Oct 13, 2017 2:56 pm
Forum: Properties of Light
Topic: Speed of Light Constant
Replies: 18
Views: 713

Re: Speed of Light Constant

I would use 2.998*10^8 due to it being the one used in the textbook. Stay with the most accurate number.
by Dayanara Ruiz
Fri Oct 13, 2017 2:54 pm
Forum: Photoelectric Effect
Topic: Constants that need to be memorized
Replies: 6
Views: 317

Re: Constants that need to be memorized

Something I was told during discussions is that it would be beneficial to memorize the atomic masses of CO2, N2, O2, H2O due to the fact that they are used very often on tests it will make it easier and gives you more time.
by Dayanara Ruiz
Tue Oct 03, 2017 9:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1017978

Re: Post All Chemistry Jokes Here

H2O is water and H2O2 is hydrogen peroxide. What is H2O4?
Drinking.
by Dayanara Ruiz
Tue Oct 03, 2017 9:40 pm
Forum: Empirical & Molecular Formulas
Topic: Problem E5
Replies: 6
Views: 1117

Re: Problem E5

Hello. For A.) I also got 1.2 x 10^-14mol. Although form answer was different for part B.) 2.6 x 10^6 years instead of 2.7. You can double check your work in the solutions manual, there answer is also 2.6. Hope it helps.

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