CHEMISTRY COMMUNITY

Yolandia Winn 1A

J.5. How do you approach this? Complete the overall equation, and write the complete ionic equation and the net ionic equation for each of the following acid–base reactions. If the substance is a weak acid or base, leave it in its molecular form in the equations. a)HF + NaOH ---> b) (CH3)3N + HNO3 -...

Yolandia Winn 1A

Fundamentals problem J.7. How do you approach this? Select an acid and a base for a neutralization reaction that results in the formation of (a) potassium bromide; (b) zinc nitrite; (c) calcium cyanide, Ca(CN)2; (d) potassium phosphate. Write the balanced equation for each reaction. Anything we're s...

Yolandia Winn 1A

Why are NH4 and H2SO3 a acids? I thought only lone protons were acidic. How can we tell from formulas like these whether compound is an acid or base?

Yolandia Winn 1A

Since Ka+ Kb= Kw, does this mean that whenever there are hydronium ions present this means hydroxide ions are too (and vice versa)? Or can a reaction only result in one or the other?

Yolandia Winn 1A

Why is partial pressure called "partial" pressure? Where is the other part? Lol

EDIT: Thanks all great responses I get it now lol!

Yolandia Winn 1A

How do you solve this?
Calculate the concentration of CO(g) in mol.m-3 at 423 K and 0.8 atm using R = 8.206 × 10-5 m3.atm.K-1.mol-1 and assuming only CO(g) is present.

Yolandia Winn 1A

How do you solve this? The reaction 2 SO2 (g) + O2 (g) ⇌ 2 SO3 (g) occurs in a 1.00 L flask at 312 K and at equilibrium the concentrations are 0.075 mol.L-1 SO2 (g), 0.537 mol.L-1 O2 (g), and 0.925 mol.L-1 SO3 (g). Calculate their respective partial pressures at 312 K using R = 8.206 × 10-2 L.atm.K-...

Yolandia Winn 1A

I just cannot picture this as I am used to thinking of reactions as two reactants (2H2+O2) reacting to form a product (2H20). Or, at first you have A+B, and then you have C. How can you simultaneously have A and B and C???

Yolandia Winn 1A

a good way to remember is
CATS have PAWS. Cations are positive.
An a-n-ion is a-negative-ion

Yolandia Winn 1A

If IE is how much an atom dislikes electrons and EA is how much atoms like to attract them, then how can Flourine be high in both?

Yolandia Winn 1A

what do you get when you combine Helium, Yttrium, Selenium, and Xenon?

HeYSeXe :*

Yolandia Winn 1A

https://fthmb.tqn.com/NvhQ7m6ggjSwYgsQs ... o_upscale()/about/funny-science-meme-breaking-bad-58b5ae553df78cdcd89ec4b4.jpg

Yolandia Winn 1A

is it correct that the magnetic quantum number can only have 3 values, and that these values correspond with each orbital? If m(l) was -1, what would this say about the electron/atomic structure?

Yolandia Winn 1A

An elements letter to an ex:

I sulfur when you argon

Yolandia Winn 1A

Can someone/ some people list all the trends in the table for easy access? thanks

Yolandia Winn 1A

When exactly will we use the Shrodinger Equation?

Yolandia Winn 1A

Why is it that we add/subtract electrons when creating lewis structures? (ex if it is molecule3+, we'd subtract 3 electrons from the entire model)

Yolandia Winn 1A

good explanation^^ From my understanding, you use deltaE=hv when there is a change, a loss or a gaining of Energy.
E=hv is an equation that tells you how much energy a photon has in this moment.

Yolandia Winn 1A

My next question would then be, what instances is light acting as a series of photons vs merely a wave?

Yolandia Winn 1A

I have the same question about the specific reasoning, but I believe Lavelle said in class that the cut off is anything smaller than 10^-14 or 10^-16. I was trying to piece the reasoning together in my head..I pictured that if the trough to trough distance was too small it wouldn't operate as a para...

Yolandia Winn 1A

I understand that chemical reactions are reactions within which new bonds have formed, resulting in an irreversible change.A physical change however is a reversible change. I was taught that Mixing vinegar and baking soda results in a chemical reaction. However, after recently doing this I noticed t...

Yolandia Winn 1A

If light acts like both a wave and a series of photons, are there certain instances where it is acting like one or the other, or both? Do we know or can we predict such instances?

CHEMISTRY COMMUNITY

Search found 22 matches

Given reactants, how do you find overall equation, complete ionic and net ionic equations (Fundamentals J.5)?

How would you know which reactants/products create certain compounds (ex J.7)?

Why is NH3 a base while NH4 an acid? H2S03? [ENDORSED]

Hydronium and Hydroxide Ions

Partial pressure definition

Question 11.64

Question 11.67

What does it mean exactly that the reactions are at equilibrium?

Re: Cation vs Anion

Electron Affinity vs Ionization Energy [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

The magnetic quantum number

Re: Post All Chemistry Jokes Here

List of all trends?

Shrodinger Equation

Polyatomic Lewis Structures

Re: What is the difference between deltaE=hv and E=hv?

Re: Light is a Wave, Light is Photons

Re: verified/detected wavelengths

Chemical Reactions vs Physical Changes

Light is a Wave, Light is Photons