Chem Lab C

Test your knowledge of various Science Olympiad events.
g-omal
Member
Member
Posts: 4
Joined: March 10th, 2017, 5:23 am
Has thanked: 0
Been thanked: 0

Chem Lab C

Post by g-omal »

Consider a Carnot engine (an insulated cylinder with a piston filled with a gas). Why must the cylinder expand during the isothermal phase of the Carnot cycle in which heat flows into the cylinder from a heat source?
User avatar
Nerd_Bunny
Member
Member
Posts: 137
Joined: January 12th, 2017, 9:36 am
Division: C
State: ID
Has thanked: 0
Been thanked: 1 time

Re: Chem Lab B/C

Post by Nerd_Bunny »

Seeing as no one has posted here in a while, I'll re-start this.

What are london dispersion forces, and where are they found?
Events: A&P, DD, Circuit Lab
States/Nats
2017 DD: 1/16
2018 A&P: 1/29
2019 A&P: 1/22
2019 PM: 1/22 
If you're curious...yes, I like rabbits.
User avatar
dxu46
Exalted Member
Exalted Member
Posts: 809
Joined: April 11th, 2017, 6:55 pm
Division: C
State: MO
Pronouns: He/Him/His
Has thanked: 2 times
Been thanked: 7 times

Re: Chem Lab B/C

Post by dxu46 »

Isn't this only a C event?
User avatar
Tailsfan101
Member
Member
Posts: 829
Joined: April 14th, 2017, 4:33 pm
Division: Grad
State: ID
Has thanked: 130 times
Been thanked: 117 times
Contact:

Re: Chemistry Lab C

Post by Tailsfan101 »

dxu46 wrote:Isn't this only a C event?
Be confident in your answers. Say it like this: "This is a C only event."
"Blessed are you when people insult you and persecute you, and falsely say all kinds of evil against you because of Me. Rejoice and be glad, for your reward in heaven is great; for in the same way they persecuted the prophets who were before you." Matthew 5:11-12

I have no regrets.
User avatar
Sleepy
Member
Member
Posts: 25
Joined: January 17th, 2017, 3:03 pm
Division: C
State: PA
Has thanked: 0
Been thanked: 0

Re: Chem Lab B/C

Post by Sleepy »

Nerd_Bunny wrote:What are london dispersion forces, and where are they found?
London dispersion forces are weak intermolecular forces that form when electrons in two adjacent atoms align in such a way that temporary dipole moments form. They are present between all molecules, but are stronger when the molecules have high polarization.
Stroudsburg HS '18
[size=80][u]MC Barons | Tiger | North Pocono | Regionals | States[/u]
Dynamic: 2 | 14 | 2 | 2 | 9
Remote: 9 | 18 | 2 | 1 | 8
Hydro: 11 | 18 | 3 | 2 | 2
Game On: 3 | 1 | 3 | 1 | 21[/size]
[size=80][u]North Pocono | Regionals | States[/u]
Dynamic: 1 | 2 | -
Remote: 2 | 1 | -
Game On: 3 | 4 | -[/size]
User avatar
Nerd_Bunny
Member
Member
Posts: 137
Joined: January 12th, 2017, 9:36 am
Division: C
State: ID
Has thanked: 0
Been thanked: 1 time

Re: Chem Lab B/C

Post by Nerd_Bunny »

Sleepy wrote:
Nerd_Bunny wrote:What are london dispersion forces, and where are they found?
London dispersion forces are weak intermolecular forces that form when electrons in two adjacent atoms align in such a way that temporary dipole moments form. They are present between all molecules, but are stronger when the molecules have high polarization.
Correct! Your turn.
Events: A&P, DD, Circuit Lab
States/Nats
2017 DD: 1/16
2018 A&P: 1/29
2019 A&P: 1/22
2019 PM: 1/22 
If you're curious...yes, I like rabbits.
User avatar
Sleepy
Member
Member
Posts: 25
Joined: January 17th, 2017, 3:03 pm
Division: C
State: PA
Has thanked: 0
Been thanked: 0

Re: Chem Lab B/C

Post by Sleepy »

Nerd_Bunny wrote:Correct! Your turn.
Q: Name all intermolecular interactions in ammonia (NH3).
Stroudsburg HS '18
[size=80][u]MC Barons | Tiger | North Pocono | Regionals | States[/u]
Dynamic: 2 | 14 | 2 | 2 | 9
Remote: 9 | 18 | 2 | 1 | 8
Hydro: 11 | 18 | 3 | 2 | 2
Game On: 3 | 1 | 3 | 1 | 21[/size]
[size=80][u]North Pocono | Regionals | States[/u]
Dynamic: 1 | 2 | -
Remote: 2 | 1 | -
Game On: 3 | 4 | -[/size]
UTF-8 U+6211 U+662F
Exalted Member
Exalted Member
Posts: 1597
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA
Has thanked: 6 times
Been thanked: 15 times

Re: Chem Lab C

Post by UTF-8 U+6211 U+662F »

(Just to clarify, yes, this is only a C event)
Tesel
Exalted Member
Exalted Member
Posts: 161
Joined: January 30th, 2016, 8:03 pm
Division: C
State: MI
Has thanked: 0
Been thanked: 1 time

Re: Chem Lab B/C

Post by Tesel »

Sleepy wrote:Q: Name all intermolecular interactions in ammonia (NH3).
LDFs - occur in all materials.
Dipole interactions - occur because of the partial negative on the lone electron pair and the partial positive on the hydrogen atoms.
Hydrogen bonds - occur specifically because of the N-H bond, special type of dipole interaction.
University of Michigan Science Olympiad Div. C Event Lead

2018 MI Mission Possible State Champions
User avatar
Sleepy
Member
Member
Posts: 25
Joined: January 17th, 2017, 3:03 pm
Division: C
State: PA
Has thanked: 0
Been thanked: 0

Re: Chem Lab B/C

Post by Sleepy »

Tesel wrote:
Sleepy wrote:Q: Name all intermolecular interactions in ammonia (NH3).
LDFs - occur in all materials.
Dipole interactions - occur because of the partial negative on the lone electron pair and the partial positive on the hydrogen atoms.
Hydrogen bonds - occur specifically because of the N-H bond, special type of dipole interaction.
Correct!
Stroudsburg HS '18
[size=80][u]MC Barons | Tiger | North Pocono | Regionals | States[/u]
Dynamic: 2 | 14 | 2 | 2 | 9
Remote: 9 | 18 | 2 | 1 | 8
Hydro: 11 | 18 | 3 | 2 | 2
Game On: 3 | 1 | 3 | 1 | 21[/size]
[size=80][u]North Pocono | Regionals | States[/u]
Dynamic: 1 | 2 | -
Remote: 2 | 1 | -
Game On: 3 | 4 | -[/size]
Locked

Return to “2018 Question Marathons”

Who is online

Users browsing this forum: No registered users and 4 guests