## Forensics C

samlan16
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### Re: Forensics C

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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boomvroomshroom
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### Re: Forensics C

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?

samlan16
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### Re: Forensics C

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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samlan16
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### Re: Forensics C

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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pikachu4919
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### Re: Forensics C

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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samlan16
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### Re: Forensics C

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.`
Correct! Please post the next question.
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pikachu4919
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### Re: Forensics C

How can one make sure a flame test result is or isn't actually yellow?
Carmel HS (IN) '16
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Nationals 2016 ~ 4th place Forensics

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samlan16
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### Re: Forensics C

How can one make sure a flame test result is or isn't actually yellow?
`Look at the flame with cobalt blue glass to filter out any orange/ yellow light from the flames.`
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pikachu4919
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### Re: Forensics C

How can one make sure a flame test result is or isn't actually yellow?
`Look at the flame with cobalt blue glass to filter out any orange/ yellow light from the flames.`
Carmel HS (IN) '16
Purdue BiolE '20
Nationals 2016 ~ 4th place Forensics

Not throwin' away my shot!
MY CABBAGES!

pikachu4919's Userpage

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samlan16
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### Re: Forensics C

Suppose that you are given a powder which burns red in a standard propane flame. What is the cation in that compound?
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