## Search found 13 matches

Sat Dec 05, 2015 4:59 pm
Forum: Lewis Structures
Topic: 2011 Final Q5B: Lewis Structure
Replies: 2
Views: 467

### Re: 2011 Final Q5B: Lewis Structure

you can do that but that won't be the most stable structure as the formal charge of S would no longer be 0.
Sat Nov 28, 2015 10:38 am
Forum: Lewis Acids & Bases
Topic: Acids and bases
Replies: 2
Views: 559

### Re: Acids and bases

A strong acid would completely ionise in water, however which acids would do that you could memorise the names of the six strong acids we are supposed to know. hydrochloric acid HCl hydrobromic acid HBr hydroiodic acid HI sulfuric acid H2SO4 nitric acid HNO3 perchloric acid HClO4 Every other acid wo...
Sat Nov 28, 2015 10:31 am
Forum: Empirical & Molecular Formulas
Topic: Video Midterm Question #2
Replies: 2
Views: 392

### Re: Video Midterm Question #2

Thank you so much, will take care of that during the exam.
Fri Nov 27, 2015 6:21 am
Forum: Empirical & Molecular Formulas
Topic: Video Midterm Question #2
Replies: 2
Views: 392

### Video Midterm Question #2

The Empirical formula on the midterm solved step by step.
Sun Nov 22, 2015 5:33 am
Forum: Polyprotic Acids & Bases
Topic: Polyprotic Acids & Bases
Replies: 1
Views: 368

### Re: Polyprotic Acids & Bases

A monoprotic acid is an acid that can donate only one proton, while polyprotic acid can donate more than one proton. Similarly, a monoprotic base can only accept one proton, while a polyprotic base can accept more than one proton.
Mon Nov 16, 2015 1:25 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: question on 11.55
Replies: 3
Views: 459

### Re: question on 11.55

You can solve the question without a graphing calculator by using the quadratic formula and doing the calculations with a normal calculator
Mon Nov 16, 2015 1:22 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: K Values
Replies: 1
Views: 304

### Re: K Values

When K is small, less than 1, it means that the rmixture mostly contains reactants.
Thu Nov 05, 2015 9:15 pm
Forum: Lewis Structures
Topic: Lewis Structure of HClO3
Replies: 3
Views: 20502

### Re: Lewis Structure of HClO3

Calculate the formal chargers, the most stable structure would be without the H on the Cl atom.
Sun Oct 25, 2015 5:13 pm
Forum: Octet Exceptions
Topic: Single bonds or Double bonds in ClO2?
Replies: 1
Views: 540

### Re: Single bonds or Double bonds in ClO2?

check which bond structure gives the lowest formal charge.
Sun Oct 18, 2015 5:28 pm
Forum: Octet Exceptions
Topic: Octet Rule
Replies: 1
Views: 362

### Re: Octet Rule

generally elements of period 3 do not obey the octet rule. There are a few elements that are not in period 3 that also come under these exceptions, you should memorise them.
Sun Oct 11, 2015 8:14 pm
Forum: DeBroglie Equation
Topic: Quiz 1 Preparation Calculating Wavelength
Replies: 2
Views: 528

### Re: Quiz 1 Preparation Calculating Wavelength

the standard unit for mass is always kilograms, use 275kg and you will get the right answer.
Sun Oct 11, 2015 7:59 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity of Carbon vs. Nitrogen
Replies: 1
Views: 513

### Re: Electron Affinity of Carbon vs. Nitrogen

Nitrogen is already in its half filled stable configuration 1s2 2s2 2p3 therefore it resist any change in its stable configuration. Whereas carbon would want an electron to achieve half filled stable configuration. Therefore carbon has higher electron affinity.
Mon Oct 05, 2015 2:49 pm
Forum: Properties of Electrons
Topic: Question No 1.59
Replies: 1
Views: 303

### Question No 1.59

While solving this question why is the units taken as Joules per photon