Forensics C

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Re: Forensics C

Post by lilacs10 »

yup. looks good
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Re: Forensics C

Post by SilverBreeze »

1. Cracks in a sheet of glass from hole A stop at hole B. Which was made first?
2. What is the chemical formula of sodium bicarbonate?
3. What is Rh factor?
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Re: Forensics C

Post by jaspattack »

SilverBreeze wrote: ↑Tue Feb 18, 2020 5:52 pm 1. Cracks in a sheet of glass from hole A stop at hole B. Which was made first?
2. What is the chemical formula of sodium bicarbonate?
3. What is Rh factor? 
1. Hole B
2. NaHCO3
3. Rh (rhesus) factor is a specific antigen found on the outside of red blood cells. Its presence is indicated by a plus or minus sign after the ABO blood type of an individual (e.g AB+ or O-)
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Re: Forensics C

Post by SilverBreeze »

jaspattack wrote: ↑Tue Feb 18, 2020 6:28 pm
SilverBreeze wrote: ↑Tue Feb 18, 2020 5:52 pm 1. Cracks in a sheet of glass from hole A stop at hole B. Which was made first?
2. What is the chemical formula of sodium bicarbonate?
3. What is Rh factor? 
1. Hole B
2. NaHCO3
3. Rh (rhesus) factor is a specific antigen found on the outside of red blood cells. Its presence is indicated by a plus or minus sign after the ABO blood type of an individual (e.g AB+ or O-)
All correct. Your turn!
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Re: Forensics C

Post by jaspattack »

1. What's the difference between low density and high density polyethylene?
2. What are the three steps of PCR?
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Re: Forensics C

Post by CPScienceDude »

I guess I'll start taking part of this. . . 
1. LDPE has more strands of polymer while HDPE's strands are more condensed. 
2. Denaturation, annealing, and extension of the DNA.
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Re: Forensics C

Post by jaspattack »

CPScienceDude wrote: ↑Tue Feb 18, 2020 7:28 pm I guess I'll start taking part of this. . . 
1. LDPE has more strands of polymer while HDPE's strands are more condensed. 
2. Denaturation, annealing, and extension of the DNA.
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Re: Forensics C

Post by CPScienceDude »

1. In the mass spec below, what is the Molecular ion peak?
2. What is the Base peak?
3. Is a mass spec a presumptive or a confirmatory test?
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Re: Forensics C

Post by SilverBreeze »

CPScienceDude wrote: ↑Wed Feb 19, 2020 5:10 pm 1. In the mass spec below, what is the Molecular ion peak?
2. What is the Base peak?
3. Is a mass spec a presumptive or a confirmatory test?
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1. 98 (maybe 99, but I think 98?)
2. 83
3. confirmatory
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Re: Forensics C

Post by CPScienceDude »

SilverBreeze wrote: ↑Wed Feb 19, 2020 6:42 pm
CPScienceDude wrote: ↑Wed Feb 19, 2020 5:10 pm 1. In the mass spec below, what is the Molecular ion peak?
2. What is the Base peak?
3. Is a mass spec a presumptive or a confirmatory test?
Image
1. 98 (maybe 99, but I think 98?)
2. 83
3. confirmatory
looks good!
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