Caffeine has only one formula: C₈H₁₀N₄O₂ There are, however many, many, many different sources of caffeine; more than 60 plants are known to contain caffeine naturally including coffee beans, tea leaves, and kola nuts.
There are many types of tea. Many teas contain caffeine which can be dangerous for some hyperthyroid patients.
Breakfast blend coffee typically has a similar amount of caffeine as other types of coffee. The caffeine content can vary depending on the brand and brewing method used.
regular, diet, caffeine free
Light roast coffee typically has the least caffeine content among all types of coffee roasts.
Decaf
Caffeine is composed of carbon (C), hydrogen (H), nitrogen (N), and oxygen (O) atoms. Its chemical formula is C8H10N4O2, which means there are 8 carbon atoms, 10 hydrogen atoms, 4 nitrogen atoms, and 2 oxygen atoms in one molecule of caffeine.
In the NMR spectrum of caffeine, you would expect to see five distinct peaks. This is due to the presence of five different types of hydrogen environments in the caffeine molecule. The unique arrangement of its methyl groups and the amine group contributes to this complexity in the NMR spectrum.
Lungo coffee does not necessarily have more caffeine compared to other types of coffee. The caffeine content in coffee is primarily determined by the type of beans used and the brewing method, rather than the specific type of coffee.
As far as I know there is only one kind of caffeine. It is, of course, in many things we consume. Coffee, tea, chocolate, soda drinks (many but not all) contain this substance. The reaction is typical: caffeine is a stimulant. It raised blood pressure, heart rate, can cause shaky hands and heart fluctuations in high doses. The health effects of longtime use are not clear however most studies have not linked caffeine to illness.
To answer your question on how many hydrogen atoms are there in caffeine, the scientific answer would be 10 atoms of hydrogen.
Many over-the-counter and behind-the-counter analgesics formulated specifically for headache contain caffeine. In the USA, probably the best known of these is Excedrin. Also, composition tablets known as "Tylenol #1" and "Tylenol #2" in the USA, and as "Compound 222" in Canada, contain caffeine in addition to aspirin and small dosages of codeine. Caffeine arguably works for to relieve certain headaches: those associated with caffeine withdrawal. The efficacy of caffeine in other headache types is controversial.
You can measure the caffeine content in different beverages using a method called chromatography. This involves separating the components of the beverage and then analyzing the caffeine specifically. Another method is using a caffeine meter or testing strips designed for measuring caffeine levels in liquids.