Search found 11 matches

by brennayoung
Wed Nov 06, 2019 10:58 am
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Confused on Problem 1.57 (regarding the Balmer Series)
Replies: 9
Views: 1695

Re: Confused on Problem 1.57 (regarding the Balmer Series)

How can you tell that it is n=7 based off of the numbers? I found a couple diagrams online that show 410.2 as n=6.
by brennayoung
Tue Nov 05, 2019 6:41 pm
Forum: Properties of Light
Topic: 4b practice midterm
Replies: 11
Views: 609

Re: 4b practice midterm

How do we find the frequency once we've found the Energy using E = phi + 1/2mv^2 ? because the ones that have frequency we aren't supposed to use if there is mass involved i thought
by brennayoung
Tue Nov 05, 2019 5:53 pm
Forum: Limiting Reactant Calculations
Topic: Midterm Review Q2
Replies: 8
Views: 1347

Re: Midterm Review Q2

First, calculate the molar mass of KMnO4 (158.09g/mol). Next, concert 5g KMnO4 to moles and 150mL to L and use the formula M=mol/L to calculate the molarity of the first solution. Lastly, use the equation M1V1=M2V2 equation to calculate the concentration of the second flask by using the value you p...
by brennayoung
Tue Nov 05, 2019 1:08 am
Forum: Properties of Electrons
Topic: Wavelength of radiation
Replies: 5
Views: 4260

Re: Wavelength of radiation

In the initial question, wouldn't you need to convert the velocity of the electron 3.6x10^3km.s^-1 into m.s^-1 so it would be 3.6m.s^-1 to be in SI units or am I mistaken?
by brennayoung
Sun Oct 20, 2019 6:06 pm
Forum: Administrative Questions and Class Announcements
Topic: Tutoring? [ENDORSED]
Replies: 61
Views: 53546

Re: Tutoring? [ENDORSED]

If you want tutoring there are the different learning sessions- but does anyone know the functional difference between the step up and workshop? Like will they provide problems to do if you don't have any specific questions?
by brennayoung
Sun Oct 20, 2019 6:04 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Uncertainty in Speed [ENDORSED]
Replies: 18
Views: 445

Re: Uncertainty in Speed [ENDORSED]

This equation can be used for other atoms than hydrogen right?
by brennayoung
Sun Oct 20, 2019 6:03 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Wavelength Plausibility
Replies: 27
Views: 465

Re: Wavelength Plausibility

I know he said 720 to 400 but 700 was acceptable but wouldn't that change the calculations?
by brennayoung
Sun Oct 06, 2019 11:42 pm
Forum: Limiting Reactant Calculations
Topic: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]
Replies: 66
Views: 849

Re: Showing Work for Limiting Reactant Calculations on Tests [ENDORSED]

In my discussion we dont really use dimensional analysis per say so I would think as long as you display some work it would be fine.
by brennayoung
Sun Oct 06, 2019 11:40 pm
Forum: Administrative Questions and Class Announcements
Topic: Advice from a Medical Student [ENDORSED]
Replies: 139
Views: 83799

Re: Advice from a Medical Student [ENDORSED]

This was very interesting, thank you for sharing!
by brennayoung
Wed Oct 02, 2019 11:20 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Problem E2
Replies: 1
Views: 53

Problem E2

For my final answer I got down to (2.12x10^5) / (6.022x10^23) = 3.52x10^-17 % but does this mean that there is no money left since its a negative exponent or just that its a very small amount? And if its a very small amount how would one know like it in whole numbers as opposed to as a percentage of...
by brennayoung
Wed Oct 02, 2019 11:02 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: E1
Replies: 6
Views: 749

Re: E1

I don't fully understand why they did their unit conversions as such, or how we knew to convert it to atoms at all. Thanks!

Go to advanced search