Search found 9 matches

by Roberto Gonzalez 1L
Sun Nov 04, 2018 11:59 pm
Forum: Trends in The Periodic Table
Topic: Ranking of effects on Periodic trends
Replies: 1
Views: 35

Re: Ranking of effects on Periodic trends

I had the same question of overlapping trends, however I think if you take into account the strength of say the effective nuclear charge, as compared with the removal or addition of electrons it reveals itself.
by Roberto Gonzalez 1L
Sun Nov 04, 2018 11:56 pm
Forum: Lewis Structures
Topic: Steps for Lewis Structures
Replies: 3
Views: 27

Re: Steps for Lewis Structures

Is it necessary to write formal charges at all times? Or only when explicitly told to do so? Also, for resonance structures is a hybrid resonance structure always expected if there are in fact delocalized double or triple bonds?
by Roberto Gonzalez 1L
Sun Nov 04, 2018 11:52 pm
Forum: Ionic & Covalent Bonds
Topic: electronegativity difference
Replies: 4
Views: 46

Re: electronegativity difference

If the difference in electronegativity of a molecule falls between 2 and 1.5 would it be necessary to classify said bond as a covalent bond with ionic characteristics or would it simply be a covalent bond?
by Roberto Gonzalez 1L
Sun Oct 14, 2018 10:29 pm
Forum: DeBroglie Equation
Topic: detectability of waves
Replies: 4
Views: 43

Re: detectability of waves

I had understood it was at x10^-12 m as that was the wavelength of an electron in an atom, however I'm not entirely certain
by Roberto Gonzalez 1L
Sun Oct 14, 2018 10:26 pm
Forum: Properties of Electrons
Topic: 7th Edition HW 1E.9
Replies: 2
Views: 41

Re: 7th Edition HW 1E.9

I started by converting the units of mass of the baseball from ounces to grams, and then substituting the given values into the De Broglie equation.
by Roberto Gonzalez 1L
Thu Oct 11, 2018 11:39 pm
Forum: Significant Figures
Topic: significant figures
Replies: 5
Views: 152

Re: significant figures

Lets say I'm multiplying a value like (225.099) times a constant such as the speed of light (3.00x10^8). Do I simply use three significant figures because of the constant?
by Roberto Gonzalez 1L
Fri Oct 05, 2018 8:47 am
Forum: SI Units, Unit Conversions
Topic: formula units [ENDORSED]
Replies: 68
Views: 20065

Re: formula units [ENDORSED]

The "formula units" phrasing throws me off a bit for a question where I am trying to find the "formula units of compound" in a certain amount of grams. Do I just set it up as conversion from grams to moles using molecular weight and solve for the moles of the compound as a whole?
by Roberto Gonzalez 1L
Fri Oct 05, 2018 8:40 am
Forum: Significant Figures
Topic: Scientific Notation
Replies: 7
Views: 76

Re: Scientific Notation

I had the same problem of not knowing when scientific notation is actually required. More specifically if its neccesary to do all our work in this form or can I use decimals up until reaching the final solution?
by Roberto Gonzalez 1L
Fri Oct 05, 2018 8:12 am
Forum: General Science Questions
Topic: Common ions
Replies: 4
Views: 123

Re: Common ions

Something that really helps me is having a piece of paper on which I have all the info regarding common ions, (name, symbols/formulas) to reference while studying and doing homework. Over time you'll become more familiarized the more you use them, but it helps to have that as a reiteration.

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