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In human anatomy, the penis (/ ˈ p iː n ɪ s /; pl.: penises or penes; from the Latin pēnis, initially "tail" [1]) is an external male sex organ (intromittent organ) that serves as a passage for excretion of urine and ejaculation of semen.
Monobromopentanes are bromopentanes containing one bromine atom, with the formula C 5 H 11 Br.. There are three isomers of unbranched monobromopentane: 1-Bromopentane
Ammonium is a modified form of ammonia that has an extra hydrogen atom. It is a positively charged molecular ion with the chemical formula NH + 4 or [NH 4] +.It is formed by the addition of a proton (a hydrogen nucleus) to ammonia (NH 3).
pH values can be measured in non-aqueous solutions, but they are based on a different scale from aqueous pH values, because the standard states used for calculating hydrogen ion concentrations are different. The hydrogen ion activity, a H +, is defined [21] [22] as:
Hydrogenoxalate or hydrogen oxalate (IUPAC name: 2-Hydroxy-2-oxoacetate) is an anion with chemical formula HC 2 O − 4 or HO−C(=O)−CO − 2, derived from oxalic acid by the loss of a single proton; or, alternatively, from the oxalate anion C 2 O 2− 4 by addition of a proton.
Phenylmagnesium bromide is a strong nucleophile as well as a strong base.It can abstract even mildly acidic protons, thus the substrate must be protected where necessary. It often adds to carbonyls, such as ketones, aldehyde
An example of a subunit, human hemoglobin.The protein's α and β subunits are coloured red and blue.. A tetramer (/ ˈ t ɛ t r ə m ər /) (tetra-, "four" + -mer, "parts") is an oligomer formed from four monomers or subunits.
The following notable deaths occurred in 2024. Names are reported under the date of death, in alphabetical order. A typical entry reports information in the following sequence: