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Carbon-13 has a non-zero spin quantum number of 1 / 2 , and hence allows the structure of carbon-containing substances to be investigated using carbon-13 nuclear magnetic resonance. The carbon-13 urea breath test is a safe and highly accurate diagnostic tool to detect the presence of Helicobacter pylori infection in the stomach. [4] The ...
1.460 029 725 243 13 × 10 44: C 110 H 222: n-decahectane 111 4.018 657 241 905 09 × 10 44: C 111 H 224: n-undecahectane 112 1.106 339 625 432 22 × 10 45: C 112 H 226: n-dodecahectane 113 3.046 369 875 968 51 × 10 45: C 113 H 228: n-tridecahectane 114 8.389 999 420 170 75 × 10 45: C 114 H 230: n-tetradecahectane 115 2.311 132 659 301 18 × ...
This is a partial list of molecules that contain 3 carbon atoms. Chemical formula Synonyms CAS number; C 3 Al 4: ... 108-13-4 C 3 H 6 N 2 S: ethenylthiourea: 1483-58 ...
Foraminifera samples. In geochemistry, paleoclimatology, and paleoceanography δ 13 C (pronounced "delta thirteen c") is an isotopic signature, a measure of the ratio of the two stable isotopes of carbon— 13 C and 12 C—reported in parts per thousand (per mil, ‰). [1]
Three-carbon molecules are based on a skeleton made from three carbon atoms. They may be in a chain, or cycles. C3 hydrocarbons are usually gases, they are inflammable, and may be harmful to humans and the environment. [1] The CAS registry number for three-carbon hydrocarbons is 68606-26-8. Hydrocarbons that include three atoms are: Propane C 3 ...
Homonuclear 13 C-13 C coupling is normally only observed in samples that are enriched with 13 C. The range for one-bond 1 J(13 C, 13 C) is 50–130 Hz. Two-bond 2 J(13 C, 13 C) are near 10 Hz. The trends in J(1 H, 13 C) and J(13 C, 13 C) are similar, except that J(1 H, 13 C are smaller owing to the modest value of the 13 C nuclear magnetic
Carbon (6 C) has 14 known isotopes, from 8 C to 20 C as well as 22 C, of which 12 C and 13 C are stable.The longest-lived radioisotope is 14 C, with a half-life of 5.70(3) × 10 3 years. . This is also the only carbon radioisotope found in nature, as trace quantities are formed cosmogenically by the reactio
3 C3. 4 C4. 5 C5. 6 C6. 7 C7. 8 C8. 9 C9. 10 C10. 11 C11. 12 C12. 13 C13. 14 C14. ... This list is ordered by the number of carbon atoms in a carboxylic acid. C1 ...