Search found 9 matches

by Lexi Nadler 1H
Wed Nov 23, 2016 8:07 pm
Forum: Polyprotic Acids & Bases
Topic: Finding the K Overall [ENDORSED]
Replies: 3
Views: 2246

Re: Finding the K Overall [ENDORSED]

In the course reader you get that result because the HC03 in the numerator of Ka1 cancels with that in the denominator of Ka2.
by Lexi Nadler 1H
Thu Nov 17, 2016 10:58 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: General trend in pressures?
Replies: 1
Views: 1988

Re: General trend in pressures?

If you increase or decrease pressure, the equilibrium will try to prevent the change. So if you increase pressure, the reaction will shift to the side of the equation with fewer molecules to balance it out and if you decrease the pressure the reaction will shift to the side of the equation with more...
by Lexi Nadler 1H
Mon Nov 07, 2016 3:27 pm
Forum: Naming
Topic: Chapter 17 #31 a & c
Replies: 1
Views: 360

Chapter 17 #31 a & c

The question says to write the formula for the coordination compounds:
a. potassium hexacyanidochromate(III)
c. tetraamminediaquacobalt(III) bromide

Can someone explain to me why potassium is written as K3 instead of K and why bromine is written as Br3 instead of Br?
by Lexi Nadler 1H
Wed Oct 26, 2016 8:25 pm
Forum: Octet Exceptions
Topic: Half Full d^5 and Full d^10 Subshells
Replies: 4
Views: 818

Re: Half Full d^5 and Full d^10 Subshells

I'm pretty sure the exception applies to any configuration ending in d^4 or d^9. Watch out for chromium and copper!
by Lexi Nadler 1H
Thu Oct 20, 2016 10:32 am
Forum: Ionic & Covalent Bonds
Topic: Home work question 3.39
Replies: 3
Views: 1229

Re: Home work question 3.39

Ammonium Chloride is written as NH4Cl. 1. Count the number of valence electrons (N=5) + (H=1x4) + (Cl=7) = 16 electrons 2. Take each chunk at a time. NH4 has 9 electrons, 1 too many, so it can donate one to Cl to complete its octet. 3. Now NH4 has 8 electrons and a positive charge because it lost an...
by Lexi Nadler 1H
Thu Oct 13, 2016 9:53 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Solving for uncertainty
Replies: 1
Views: 333

Re: Solving for uncertainty

Yes. Even if you took the two into consideration, the uncertainty would still just be .01 times 2 because 2.01-1.99 is still =.02.
by Lexi Nadler 1H
Thu Oct 06, 2016 11:08 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic vs. Molecular spectroscopy [ENDORSED]
Replies: 1
Views: 2892

Re: Atomic vs. Molecular spectroscopy [ENDORSED]

Atomic spectroscopy has to do with just the properties of atoms where as molecular spectroscopy concerns the entire molecule. Molecular spectroscopy is the study of how molecules absorb light and atomic spectroscopy is trying to figure out what elements make up the atom by by looking at the electrom...
by Lexi Nadler 1H
Thu Sep 29, 2016 10:34 am
Forum: Balancing Chemical Reactions
Topic: Writing Reactions
Replies: 5
Views: 835

Writing Reactions

I understand how to balance a chemical reaction, but I'm having trouble writing them when they are given in word form (like chlorate or calcium hydroxide). Does anybody have any tips or tricks for remembering all the prefixes and suffixes?

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