Correct! Please post the next question.pikachu4919 wrote: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.
Forensics C
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samlan16
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Re: Forensics C
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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?
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Re: Forensics C
pikachu4919 wrote: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
yep! your turn!samlan16 wrote:pikachu4919 wrote: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 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.
MY CABBAGES!
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Nationals 2016 ~ 4th place Forensics
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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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Re: Forensics C
samlan16 wrote:Suppose that you are given a powder which burns red in a standard propane flame. What is the cation in that compound?
Li +
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Re: Forensics C
Correct!yellow_squirtle wrote:samlan16 wrote:Suppose that you are given a powder which burns red in a standard propane flame. What is the cation in that compound?Li +
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Re: Forensics C
Light travels from air into a glass fragment with an angle of incidence of 42 degrees. The angle of refraction at the end of the fragment is 18 degrees.
Calculate the index of refraction of the glass. Round to the nearest hundredth.
Calculate the index of refraction of the glass. Round to the nearest hundredth.
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Re: Forensics C
yellow_squirtle wrote:Light travels from air into a glass fragment with an angle of incidence of 42 degrees. The angle of refraction at the end of the fragment is 18 degrees.
Calculate the index of refraction of the glass. Round to the nearest hundredth.
asinθ1=bsinθ2 b=asinθ1/sinθ2 =asin42°/sin18° a=1.00 ∴ b=2.17
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yellow_squirtle
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Re: Forensics C
Correct.samlan16 wrote:yellow_squirtle wrote:Light travels from air into a glass fragment with an angle of incidence of 42 degrees. The angle of refraction at the end of the fragment is 18 degrees.
Calculate the index of refraction of the glass. Round to the nearest hundredth.asinθ1=bsinθ2 b=asinθ1/sinθ2 =asin42°/sin18° a=1.00 ∴ b=2.17
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