Exposure to white phosphorus should not exceed 0.1 mg/m 3 (8-hour time-weighted average per 40-hour work week). Yahoo ist Teil von Verizon Media. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100. The reason is that the molar mass of the substance affects the conversion. Mass Percent: Phosphorus: P: 30.973761: 1: 100.000% ›› Calculate the molecular weight of a chemical compound. It depends on the isotopes. common chemical compounds. phosphorus' atomic mass,it's weight,is 30.974 the atomic number on the other hand is 15 Bemerkungen: 1 Digit = niederwertigste Stelle, d.h. 2,435 +/- 3 Digits bedeutet 2,432 … 2,438; Die »CAS Registry Number« ist die dem Element Phosphor vom Chemical Abstracts Service zugewiesene Schlüsselnummer, die das Auffinden von Fachartikeln über dieses Element in allen nach dem CAS-System strukturierten Publikationen und Datenbeständen erleichtert. Phosphorus is a chemical element which comes in two forms, red and white one. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. Sign in. Lv 7. Chemical symbol for Phosphorus is P. Number of protons in Phosphorus is 15. Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. Red phosphorus is a non-toxic solid which we all have in our kitchens, on the edges of our matchsticks. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. Finding molar mass starts with units of grams per mole (g/mol). Enter a chemical formula: Browse the list of common chemical compounds. State of Phosphorus is Solid at standard temperature and pressure ›› More information on molar mass and molecular weight. Lv 4. Melting point of Phosphorus is 44 (P4) °C and its the boiling point is 280 (P4) °C. Dazu gehört der Widerspruch gegen die Verarbeitung Ihrer Daten durch Partner für deren berechtigte Interessen. Phosphorus is a chemical element which comes in two forms, red and white one. White phosphorus is highly toxic, and it can cause burns when contacting human skin. Source(s): mass number phosphorus: https://biturl.im/wbC6c. Number of electrons = 15. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance. Damit Verizon Media und unsere Partner Ihre personenbezogenen Daten verarbeiten können, wählen Sie bitte 'Ich stimme zu.' The person who answered before me has given the mass of the stable isotope P31. Sie können Ihre Einstellungen jederzeit ändern. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. 0 0. Dies geschieht in Ihren Datenschutzeinstellungen. Chemical symbol for Phosphorus is P. Number of protons in Phosphorus is 15. 5 … Atomic number = 15 = number of electron = number of protons. 0 0. maussy. Convert grams Phosphorus to moles  or  moles Phosphorus to grams. This element is crucial for all living things on our planet since it supports energy generating processes. Melting point of Phosphorus in Kelvin is 317.3 K. Abundant value of Phosphorus is 1050 mg/kg. Phosphorus boiling point is 280 (P4) °C. How do you think about the answers? Deborah. Iwould rather say its mass number is 31 beiin g made of 15 protons and 16 neutrons. This site explains how to find molar mass. 31 = 15 + number of neutrons. Atomic weight of Phosphorus is 30.973762 u or g/mol. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. Number of neutrons = 31-15 = 16 To complete this calculation, you have to know what substance you are trying to convert. aus oder wählen Sie 'Einstellungen verwalten', um weitere Informationen zu erhalten und eine Auswahl zu treffen. These relative weights computed from the chemical equation are sometimes called equation weights. Phosphorus. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. 8 years ago. You can sign in to vote the answer. of a chemical compound, More information on Mass number = 31 = number of protons + number of neutrons. This chemical element has got its name after the Greek expression meaning brighter than light since this element glows in the dark by slow ‘burning’ light. molar mass and molecular weight. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical … Calculate the molecular weight White phosphorus should be kept under water (as it is dangerously reactive in air) and should be handled with forceps, as contact with the skin may cause severe burns. Boiling point of Phosphorus in Kelvin is 550 K. Phosphorus melting point is 44 (P4) °C. Industrially, phosphorus and its compounds can be used as fertilizers, steel production, producing detergents, household goods, soft drinks, poison for rodents, and so on. A common request on this site is to convert grams to moles. Wir und unsere Partner nutzen Cookies und ähnliche Technik, um Daten auf Ihrem Gerät zu speichern und/oder darauf zuzugreifen, für folgende Zwecke: um personalisierte Werbung und Inhalte zu zeigen, zur Messung von Anzeigen und Inhalten, um mehr über die Zielgruppe zu erfahren sowie für die Entwicklung von Produkten. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. In nature, phosphorus can be found as an element of various compounds like phosphate rocks and other minerals. Browse the list of Atomic weight of Phosphorus is 30.973762 u or g/mol. » Boiling Point » Melting Point » Abundant » State at STP » Discovery Year About Phosphorus . We use the most common isotopes. Melting point of Phosphorus is 44 (P4) °C and its the boiling point is 280 (P4) °C. Number of protons = 15. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. Phosphorus is very poisonous, 50 mg constituting an approximate fatal dose. at 0℃ and one atmosphere pressure.