Search results
Results from the WOW.Com Content Network
The phosphorus content increases from about 0.5% by mass in infancy to 0.65–1.1% by mass in adults. Average phosphorus concentration in the blood is about 0.4 g/L; about 70% of that is organic and 30% inorganic phosphates. [ 134 ]
Molar mass: 30.974 g·mol −1 Density: 2.34 g/cm 3: Melting point: 590 °C (1,094 °F; 863 K) Hazards ... Red phosphorus is an allotrope of phosphorus. It is an ...
Molar mass: 123.895 g·mol −1 Density: 1.82 g/cm 3: Melting point: ... White phosphorus, yellow phosphorus, or simply tetraphosphorus (P 4) is an allotrope of ...
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
The phosphate ion has a molar mass of 94.97 g/mol, and consists of a central phosphorus atom surrounded by four oxygen atoms in a tetrahedral arrangement. It is the conjugate base of the hydrogen phosphate ion H(PO 4) 2−, which in turn is the conjugate base of the dihydrogen phosphate ion H 2 (PO 4) −
Phosphorus-32 (32 P) is a ... reducing the atomic number by one while maintaining the mass number of 32. ... Its molar activity is 338.61 TBq/mmol ...
Phosphorus pentoxide is a chemical compound with molecular formula P 4 O 10 (with its common name derived from its empirical formula, P 2 O 5). This white crystalline solid is the anhydride of phosphoric acid .
Molar mass: 81.99 g/mol Appearance white solid deliquescent: Density: ... Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.