Carbon-13

“‘Hey, we’ve got a problem here.’ The day was April 13, 1970. The voice was that of astronaut Jack Swigert, speaking from aboard the spacecraft Odyssey. Almost immediately, NASA’s Mission Control queried back: ‘This is Houston. Say again, please’” (Useem 114). The men wanted to get the point across that there was a major life or death problem going on. They spread the awareness in both the story and film of Apollo 13. Various stories with a movie or film made along with it most likely have some…

Apollo 13 Maria Awad Mr. Estes American History II, D-block 16 March 2016 On April 11, 1970, the spacecraft, Apollo 13 was launched to go to the moon. Its journey lasted about five days, 22 hours, 54 minutes and 41 seconds and traveled 622,268 miles. It landed April 17, 1970 in the Pacific Ocean (Chaikin, Kohl, and Bean 56). The spacecraft’s crew consisted of: James A. Lovell Jr. as the Commander, Fred W. Haise Jr. as the Lunar Module Pilot, and John L. Swigert Jr. as the Command Module…

tank. Their mission was a success even though it was a disaster that almost cost their lives. The Apollo 13 were doing a routine task which was to turn on the fans inside of the oxygen tanks. After that, the air tanks exploded while inflicting massive damage to the spacecraft, which was caused by faulty wiring in the oxygen tanks. One reason that it was a success was that the crew of Apollo 13 showed excellent teamwork and calmness during the disaster. They showed excellent teamwork and…

δ13C is a comparison between the ratio of carbon 13 and carbon 12 of the object of interest compared to a standard. The cause of the -20‰ of δ13C in the maple syrup is no cause for concern. The reason -20‰ of δ13C may have been a cause for concern is because there are some sugarwoods that will adulterate their maple syrup with corn syrup or cane sugar. Corn syrup, as well as cane sugar, have a higher δ13C content than maple syrup. Typically corn syrup and cane sugar have between -9‰ to -12‰…

the peak at around δ = 0.9 ppm.31 The proton of −CH2− groups of the fatty acid backbone and terminal methyl group attached proton show the peak between δ =1.20−1.59 ppm.30 The peak at δ = 5.4 ppm is attributed to the protons attached to the olefinic carbon atom (−CH=CH−) of fatty acid,28 this peak provides the evidence of the presence of fatty acid chain of SO in the HBA resin. The peak in the range δ =7.3−7.5 ppm associated with the aromatic protons attached to the benzene ring of phthalic…

the essay is carbon 14 isotope. Carbon is found in all living things and is the building block for organic material, there is carbon 12, 13 and 14 and they all have different properties. This isotope was discovered on February 27, 1940 by Martin Karmen and Sam Ruben and is the most radioactive out of all carbon isotopes. The relative abundance of it is >0.1% (trace amount) and its relative mass is 14.003241. It has 6 protons and 8 neutrons. This particular isotope is found in all carbon…

ionic-bonded oxide ceramics such as alumina. Structure of Silicon carbide Silicon carbide is a compound of silicon, a metalloid, and carbon, a nonmetal, and has a giant molecular lattice structure. It has a similar structure with diamond. Each carbon atom is joined tetrahedrally to four silicon atoms by strong covalent bonds, and each silicon atom is joined tetrahedrally to four carbon atoms by strong covalent bonds. This network is repeated and forms a giant molecule. Hence, Silicon carbide…

Main Group Elements Organometallic Compounds: The compounds which contain at least one direct metal to carbon covalent bond are known as organometallic compounds many of these are thermodynamically unstable and are pyrophoric. The meta may belongs to main group, transition metal, f group metal or a metalloid i.e. selenium, boron, arsenic, silicon, antimony, germanium, and tellurium and the carbon moiety may be alkyl, alkene, alkyne, carbonyl, cyclic, heterocyclic or aromatic.1 Historical…

known industrial processes produce materials which have dimensions in the nanometre size range. One example is the synthesis of carbon black by flame pyrolysis which produces a powdered form of carbon with a very high surface to mass ratio. This is usually highly agglomerated but has a primary particle size which can be of the order of 100 nm. Worldwide production of carbon black was approximately 6 million tonnes in 1993 (IARC,1996). Other common materials produced by flame pyrolysis or similar…

atomic theory? A Atoms make up compounds. B Atoms can be rearranged to form new elements. C Most atoms are metals. D Everything is made up of tiny particles called atoms. ____ 3. Diamonds and graphite are both made of carbon atoms. Why do they have different properties?…