Potions and Poisons B

Test your knowledge of various Science Olympiad events.
dvegadvol
Member
Member
Posts: 61
Joined: December 18th, 2015, 3:03 pm

Re: Potions and Poisons B

Postby dvegadvol » March 6th, 2018, 10:24 am

Anyone have a P&P test to share? All of our invitationals returned our answer sheets, but not the test itself.

Thanks

<<rhine>>
Member
Member
Posts: 5
Joined: March 7th, 2018, 8:14 am
Division: B
Location: Behind a laptop

Re: Potions and Poisons B

Postby <<rhine>> » March 7th, 2018, 8:22 am

I have a question '~'
To 2.00 L of 0.445 M HCl, you add 3.88 L of a second HCl solution of an unknown concentration. The resulting solution is 0.974 M. Assuming the volumes are additive, calculate the molarity of the second HCl solution.
:D
~
"I only conform to society."

dvegadvol
Member
Member
Posts: 61
Joined: December 18th, 2015, 3:03 pm

Re: Potions and Poisons B

Postby dvegadvol » March 7th, 2018, 9:03 am

M in total solution:

(2.00 + 3.88)L x 0.974 M/L = 5.73 M

M in 1st solution:

2.00L x 0.445 M/L = 0.890 M

Difference gives M in 2nd solution:

5.73 M- 0.890 M = 4.84 M

M of 2nd solution

4.84mole/3.88L = 1.25M

User avatar
jimmy-bond
Member
Member
Posts: 327
Joined: January 8th, 2018, 11:25 pm
Division: C
State: HI
Location: On Earth, I think

Re: Potions and Poisons B

Postby jimmy-bond » March 19th, 2018, 5:46 pm

M in total solution:

(2.00 + 3.88)L x 0.974 M/L = 5.73 M

M in 1st solution:

2.00L x 0.445 M/L = 0.890 M

Difference gives M in 2nd solution:

5.73 M- 0.890 M = 4.84 M

M of 2nd solution

4.84mole/3.88L = 1.25M
Since no one is responding, I'll take over. Your answer is correct, so your turn
If life gives you melons, you're dyslexic.

Why can't dinosaurs ski? Because they're dead.

Merry Chrysler.
Code Busters(16), DD(40), FQ(39), Forensics(36), WQ(27)
CriB(26), DP (11), FF(1), MM(14), P&P(6)
CriB(36), DD(35), FF(2), MM(20)

dvegadvol
Member
Member
Posts: 61
Joined: December 18th, 2015, 3:03 pm

Re: Potions and Poisons B

Postby dvegadvol » March 21st, 2018, 8:20 am

Okay.

1. How many eyes does Loxosceles reclusa have?
1a. How are the eyes arranged and what is this arrangement called?
2. What type of bond involves the complete transfer of valence electrons?
3. How much does one mole of 100% pure isopropyl alcohol weigh, in grams?
4. What are the three routes of exposure to toxins?
5. In paper chromatography, there are two phases. Name and describe them.
6. Which environmental toxin is an EPA criteria pollutant?
6a. What are the other five EPA criteria pollutants?
7. What does LD50 stand for?
8. What are the early stage processes in an oil spill at sea?
9. If 2,000 people were exposed to urushiol, about how many would have no reaction whatsoever?
10. Two household chemicals cause olfactory fatigue or adaptation: name them.

igotoschool
Member
Member
Posts: 7
Joined: November 28th, 2017, 6:52 am

Re: Potions and Poisons B

Postby igotoschool » March 21st, 2018, 10:44 am

Okay.

1. How many eyes does Loxosceles reclusa have?
1a. How are the eyes arranged and what is this arrangement called?
2. What type of bond involves the complete transfer of valence electrons?
3. How much does one mole of 100% pure isopropyl alcohol weigh, in grams?
4. What are the three routes of exposure to toxins?
5. In paper chromatography, there are two phases. Name and describe them.
6. Which environmental toxin is an EPA criteria pollutant?
6a. What are the other five EPA criteria pollutants?
7. What does LD50 stand for?
8. What are the early stage processes in an oil spill at sea?
9. If 2,000 people were exposed to urushiol, about how many would have no reaction whatsoever?
10. Two household chemicals cause olfactory fatigue or adaptation: name them.
1. 6
1a. in three pairs and they are called dyads
2. ionic bond
3. 60.09502 grams
4. inhalation, absorption, ingestion
5. stationary and mobile; can;t really describe
6. lead
6a. ozone(O3), particle matter, carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2)
7. lethal dose that kills 50% of something
8.spreading, evaporation, dispersion, emulsification and dissolution
9. idk
10. idk

dvegadvol
Member
Member
Posts: 61
Joined: December 18th, 2015, 3:03 pm

Re: Potions and Poisons B

Postby dvegadvol » March 22nd, 2018, 5:56 am

Very well done.

9. Urushiol is active toxin in poison ivy & oak. Approximately 15-25% of humans have no reaction to it, therefore 300-500 people exposed to it will have no reaction.

10. Prolonged exposure to ammonia or chlorine decreases your ability to detect their odors, which can lead to damage.

Bonus!

What popular food has urushiol in its skin?

dvegadvol
Member
Member
Posts: 61
Joined: December 18th, 2015, 3:03 pm

Re: Potions and Poisons B

Postby dvegadvol » March 22nd, 2018, 5:57 am

Very well done.

9. [hide]Urushiol is active toxin in poison ivy & oak. Approximately 15-25% of humans have no reaction to it, therefore 300-500 people exposed to it will have no reaction.[/hide]

10. [hide]Prolonged exposure to ammonia or chlorine decreases your ability to detect their odors, which can lead to damage.[/hide]

Bonus!

What popular food has urushiol in its skin?

shrewdPanther46
Member
Member
Posts: 425
Joined: October 9th, 2017, 6:25 pm
Division: C
State: NJ

Re: Potions and Poisons B

Postby shrewdPanther46 » March 22nd, 2018, 6:01 am

mangoes?

UTF-8 U+6211 U+662F
Exalted Member
Exalted Member
Posts: 1518
Joined: January 18th, 2015, 7:42 am
Division: C
State: PA

Re: Potions and Poisons B

Postby UTF-8 U+6211 U+662F » March 22nd, 2018, 9:45 am

Very well done.

9. Urushiol is active toxin in poison ivy & oak. Approximately 15-25% of humans have no reaction to it, therefore 300-500 people exposed to it will have no reaction.

10. Prolonged exposure to ammonia or chlorine decreases your ability to detect their odors, which can lead to damage.

Bonus!

What popular food has urushiol in its skin?
Use the hide tag like this:

Code: Select all

[hide]Shown text|Hidden text[/hide]
Hidden text
The vertical bar is right above the enter key on QWERTY keyboards.

There's also the answer tag:

Code: Select all

[answer]42[/answer]
42


Return to “2018 Question Marathons”

Who is online

Users browsing this forum: No registered users and 0 guests