Yes, 13 degrees Celsius is considered cool or chilly but not extremely cold. It may require a light jacket or sweater for some people, depending on their sensitivity to temperature.
Yes. Both carbon atoms have 6 protons. However, the 12C atom has 6 neutrons while the 13C atom has 7 neutrons :)
Proton decoupling in 13C NMR spectroscopy is achieved by irradiating the sample with radiofrequency pulses that flip the nuclear spins of the protons, effectively decoupling them from the carbon nuclei. This eliminates the splitting caused by proton-carbon coupling, resulting in a simpler and easier-to-interpret 13C NMR spectrum.
The nuclear notation of an atom with 6 protons and 7 neutrons would be written as carbon-13, denoted as 13C. This indicates the total number of protons and neutrons in the nucleus of the atom.
Carbon-13 is a heavy isotope of carbon having a mass number of 13 (with 6 protons, 6 electrons and 7 neutrons). It makes up about 1.109% of all natural carbon on http://www.answers.com/topic/earth-1930-film.
If the element in question is carbon, it has 6 protons, whether it's 12C, 13C, 14C, or any of its other 12 known isotopes.
13ºC = 55.4ºF
With a what : )?
13C or -13C depending on the order of subtraction
18C warmer than -13C is 5C.
8c
The compound has three unique 13C NMR signals.
13C
7
13c
13c
13C is 55.4F
no one ever nows