Forensics C

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boomvroomshroom
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Re: Forensics C

Post by boomvroomshroom » March 13th, 2015, 9:39 am

elephantower wrote:
Cornstarch
Yep!
So...what are your events again?

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Re: Forensics C

Post by elephantower » March 13th, 2015, 8:52 pm

Geomaps, Proteins, IAT, 4n6.
[S/N]
N/A = didn't compete

2013:
Geologic Mapping: 1, 2
Designer Genes: 3, :(
Astronomy: N/A, :(
2014:
Geologic Mapping: 1, N/A
Protein Modelling: 1, N/A
It's About Time: 1, N/A
Forensics: 9, N/A
2015:
Geologic Mapping: 1, ?
Hydrogeology: 1, ?
It's About Time: 1, ?
Forensics: 10, ?

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Re: Forensics C

Post by boomvroomshroom » March 14th, 2015, 10:15 am

elephantower wrote:Geomaps, Proteins, IAT, 4n6.
I do Geomaps, Forensics, Astronomy, and Fossils. I only comment in It's About Time and Protein because I find them interesting topics, but I don't actually compete in them. (Studied for them but stopped because of scheduling conflicts.)

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Re: Forensics C

Post by samlan16 » March 14th, 2015, 11:30 am

Here's one: find the Rf of black ink comprised of red ink that traveled 2.4 cm and blue ink that traveled 2.9 cm.
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Re: Forensics C

Post by boomvroomshroom » March 14th, 2015, 8:14 pm

samlan16 wrote:Here's one: find the Rf of black ink comprised of red ink that traveled 2.4 cm and blue ink that traveled 2.9 cm.
Rf would be 0.8 and 0.967.

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Re: Forensics C

Post by samlan16 » March 15th, 2015, 4:26 pm

boomvroomshroom wrote:
samlan16 wrote:Here's one: find the Rf of black ink comprised of red ink that traveled 2.4 cm and blue ink that traveled 2.9 cm.
Rf would be 0.8 and 0.967.
Whoops, I meant 3.0 cm. Correct.
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Re: Forensics C

Post by boomvroomshroom » March 15th, 2015, 6:37 pm

Oh, okay! Cool, so I guessed right. :)

Okay, so...on a mass spec, what do you call a) the rightmost peak, and b) the tallest peak?

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Re: Forensics C

Post by samlan16 » March 17th, 2015, 11:13 am

boomvroomshroom wrote:Oh, okay! Cool, so I guessed right. :)

Okay, so...on a mass spec, what do you call a) the rightmost peak, and b) the tallest peak?
Rightmost= molecular ion mass; tallest= relative molecular mass/ relative formula mass
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Re: Forensics C

Post by samlan16 » July 31st, 2015, 8:55 am

Well, it's been a while since anyone posted on this question marathon, so...

How can you tell the difference between sodium carbonate and sodium bicarbonate?
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Re: Forensics C

Post by pikachu4919 » August 1st, 2015, 2:54 pm

samlan16 wrote:Well, it's been a while since anyone posted on this question marathon, so...

How can you tell the difference between sodium carbonate and sodium bicarbonate?
they have different pH values. Na2CO3's is 10 and NaHCO3's is 8.
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