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
Re: Forensics C
Posted: October 19th, 2015, 5:59 pm
by pikachu4919
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?
Re: Forensics C
Posted: October 19th, 2015, 6:47 pm
by Magikarpmaster629
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.
Re: Forensics C
Posted: October 20th, 2015, 10:55 am
by pikachu4919
Magikarpmaster629 wrote:
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!
Re: Forensics C
Posted: November 1st, 2015, 3:52 pm
by justgreene
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!