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What amino acid has a phenyl group as its R group?
The R-group in the phenylalanine amino acid is: CH2-benzene ring
Why are there more safety precautions with r410a than with other popular refrigerants like r22 and r404a?
The pressure of R-410A is significantly higher than other refrigerants R-22 and R-404A. This does not mean that R-410A, or equipment containing R-410A is unsafe. It does mean that technicians must use AC equipment; cylinders and service tools have been re-engineered to handle these higher pressures.
What is a saturated ketone?
A saturated ketone is one which has saturated alpha, beta carbons etc.. (by this I mean saturated with hydrogens, there are no double bonds). The opposite, a conjugated ketone, is one which has double bonds in its substituents or R groups (such as an aromatic ring system or alkene). For example, benzil is a conjugated ketone while acetone is a saturated ketone. Source: Organic Chemistry student
What are the structural formula for alcohols?
Roh, where "R" is a hydrocarbon, could be straight chain branched chain or a ring or rings. A good organic chemistry text or google search will give examples I do not know how to draw here.
What does R C I on gold jewelry mean?
More than likely it means it was made by Rci Jewelry Corp
What does R 925 in a ring mean?
925 is found on silver jewelry, and it means 0.925 grams (of silver). The R is meaningless.
What does R 925 mean on a ring?
Its a makers mark..Ross Simons has alot of R stamped jewelry
WHAT DOES R 925 china mean on a ring?
it means that the ring/bracelet is gold plated sterling silver.
What does a hallmark R mean on a ring?
The "R" is not meaningless. It is the makers mark or hallmark and it can mean a huge difference in value. Unfortunately, I need to know the same thing. minenis marked "Sterling .925 R" and know what everything but the R stands for. what is your piece of jewelry? Please let me know if you find out!
What does the letters r c z mean inside a ring?
What rcz mean inside ring
Why do you get gas when you eat rice?
Cz u r stoopid
What does R J or A R J stamped into a gold ring mean?
Im not sure, but i have a ring stamped with an ARJ as well. It is a silver ring and i believe there is also a stamping of a face as well.
What is 925 on jewelry mean?
r answer: Earn +20 pts Q: What is 925 mean on jewelry? Write your answer...
What does 'IUINIUI' inscribed on a ring mean?
'IUINIUI' does not have a specific meaning in any known language or symbol system. It is possible that it could be a personal inscription or a design element without a specific literal meaning.
What does R 925 on the back of a small photo frame mean?
Occasionally you will find older photo frames made of sterling silver. It is possible this frame is silver. The R could be a manufacturer's mark. I would bring it to a jeweler to see if it is silver. 925 usually means sterling, 92.5% pure.
Calculate volume of ring?
let the outer radius of the ring be R inner radius r n cross sectional radius be y then the volume of the ring will be (pi)y2 X (pi)(R-r)/2 i.i the cross sectional area multiplied by the length of the ring when it was a line the length is taken at the midpoint of the thickness of the ring = (R-r)/2
What does 925 R mean stamped on ring?
Gold-plated Sterling Silver. Not sure how to tell the carat of the gold, tho.Open in Google Docs ViewerOpen link in new tabOpen link in new windowOpen link in new incognito windowDownload fileCopy link addressEdit PDF File on PDFescape.com
