samlan16 wrote:
Also, it appears that daydreamer0023 has not been on the forums in the past 2 weeks or so, so here's the next question (and not nearly as deadly): What are the medullary indices of human, horse, dog, and cat hair?
human: ~0.1 - 0.25
horse: ~0.6 - 0.75
dog: ~0.5 - 0.6
cat: ~0.7 - 0.9
All depends on location of the hair on the specimen
Carmel HS (IN) '16 Purdue BioE '21? reevaluating my life choices
Nationals 2016 ~ 4th place Forensics
"It is important to draw wisdom from different places. If you take it from only one place, it becomes rigid and stale." -Uncle Iroh
About me || Rate my tests! Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.
You test an unknown powder. It doesn't dissolve in water. What test would you perform next on this unknown powder in your quest to determine what it is and why?
Carmel HS (IN) '16 Purdue BioE '21? reevaluating my life choices
Nationals 2016 ~ 4th place Forensics
"It is important to draw wisdom from different places. If you take it from only one place, it becomes rigid and stale." -Uncle Iroh
About me || Rate my tests! Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.
pikachu4919 wrote:SINCE NO ONE HAS POSTED A QUESTION,
You test an unknown powder. It doesn't dissolve in water. What test would you perform next on this unknown powder in your quest to determine what it is and why?
If it is not soluble, then it could be CaSO4, CaCO3, Cornstarch, or MgSO3. These all have different pH (except for CaSO4 and cornstarch), so doing a pH test would almost certainly yield the answer.
Ladue Science Olympiad (2014ish-2017)
A wild goose flies over a pond, leaving behind a voice in the wind.
A man passes through this world, leaving behind a name.
pikachu4919 wrote:SINCE NO ONE HAS POSTED A QUESTION,
You test an unknown powder. It doesn't dissolve in water. What test would you perform next on this unknown powder in your quest to determine what it is and why?
If it is not soluble, then it could be CaSO4, CaCO3, Cornstarch, or MgSO3. These all have different pH (except for CaSO4 and cornstarch), so doing a pH test would almost certainly yield the answer.
Nice job! Your turn!
Carmel HS (IN) '16 Purdue BioE '21? reevaluating my life choices
Nationals 2016 ~ 4th place Forensics
"It is important to draw wisdom from different places. If you take it from only one place, it becomes rigid and stale." -Uncle Iroh
About me || Rate my tests! Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.
Since no one has posted a question, I'll do the honors. Describe the process of mass spectrometry - be sure to include how the different ions are measured and how those measurements are read. Good luck!
