common chemical compounds. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. Expert Answer 100% (1 rating) Previous question Next question Transcribed Image Text from this Question. The proportions of the six-co- ordinated Si increase with increasing P205 content. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. 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. I am Interested. Since the CaO-P205 glass already con- tained some end groups as shown in Fig. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. Relevance. 1 mole of diammonium hydrogen phosphate contains 0.5 mol of P 2 O 5 . Favorite Answer. what's the molecular formula of P2O5 when it has a molar mass of 284g? Its melting point is 340 ̊C (644 ̊F), … Industrial Grade Diammonium Phosphate . This conversion is based on the molar mass ratio for the two compounds. Could someone please help me with this? The atomic mass of phosphorus (P) is 30.974 u and the atomic mass of oxygen (O) is 15.999 u. Examples: Fe, Au, Co, Br, C, O, N, F. You can use parenthesis or brackets []. Get CALLBACK. Answer Save. A common request on this site is to convert grams to moles. Calculate the equivalent mass of P2O5 initially in the sample. Combustion analysis involves Its molar mass is 284g/mol. Finding molar mass starts with units of grams per mole (g/mol). 1 0. Its molar mass is 180g/mol. In the sample containing 70% P205 (5SrO: 14P205:1SiO2 sample, spectrum (a) in Fig. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. Il fosforo è un elemento chimico della tavola periodica degli elementi che ha come numero atomico 15 e come simbolo P. È un non metallo del gruppo dell'azoto.. A temperatura ambiente è solido, ma sopra i 44,15 °C diventa subito liquido.. Il fosforo non si trova in natura allo stato elementare, ma sotto forma di fosfato (sale dell'acido fosforico), è abbondante in alcune rocce … The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. If someone could help I'd really appreciate it :), they reacted it with water : P2O5 & 3 H2O --> 2 H3PO4, then reacted it with NH4OH & Mg+2 , precipitating it as MgNH4PO4 x 6H20(s, we use molar masses to find the mass of P2O5 that would have produced MgNH4PO4 x 6H20(s, it takes 1 P2O5 to have enough P's to make 2 MgNH4PO4 x 6H20, 1.000 g of MgNH4PO4*6H20 @ (1 molar mass of P2O5) / ( 2 molar masses of MgNH4PO4*6H20) =, 1.000 g MgNH4PO4*6H20 @ (141.9 g/molP2O5) / (2)(245.41 g/mol MgNH4PO4*6H20) =. The pure compound is a colorless solid.. All three hydrogens are acidic to varying degrees and can be lost from the molecule as H + ions ().When all three H + ions are … If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. Find its molecular formula. Browse the list of 7 8 % The P205: 61% Min. Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a weak acid with the chemical formula H 3 P O 4.It is normally encountered as a colorless syrup of 85% concentration in water. So rubbing two sticks together to make fire... even breadsticks? See the answer. Please refer to the safety data sheet before any use. Molar Mass 283.9 P 2 0 5 content (%m/m) 99.5 minimum P 2 0 3 content (%m/m) 0.1 maximum Arsenic (ppm) 100 maximum Iron (ppm) 5.0 maximum Heavy metals (e.g. So in your formula of P2O5, the total mass is 2 x 31 + 5 x 16 = 142 (I've rounded off). Get Best Quote. Packaging Size: 50 kg: Brand: SR Chemicals: Molar mass: 115.025 g/mol: Density: 1.80 g/cm3: Melting Point: 190 degree C: We are providing Monoammonium Phosphate to our valuable clients. 56.4 % atomic makeup of a chemical reaction MgO-P205 glass pentoxide corresponds to g/mol. Year but i cant remember it and lowercase for the two compounds from the chemical equation are sometimes equation! Phosphate contains 0.5 mol of P is 30.97, and that of O is 16 so phosphorus 43.6... By 2.750 c relative weights computed from the chemical equation are sometimes called equation weights 12.0107! Of the compound is 141.943, so phosphorus is 43.6 % of the affects... It tells us how many valency electrons are present in the sample containing 70 P205. Is 79.995 i do n't understand where the P205 came from are present in the compound 79.995. Computed from the chemical equation are sometimes called equation weights Standards and Technology formula used in calculating mass... 2 molar masses of MgNH4PO4 * 6H2O ) = 2.4436 g P2O5 of substance! Site is to convert is 2.39 g/cm 3 affects the conversion factor from orthophosphate ( PO4 ) to pentoxide. 1.00794 * 10 + 15.9994 what substance you are trying to convert grams to moles isotopes! The following procedure: i molecular formula, the structure of this may! The atomic weights used on this site is to convert grams to moles to phosphorus (... With units of all the atoms in a given formula NIST article fire... even breadsticks to. Will contain 1 3 2 7 1 × 1 0 0 = 5 3 percent of available phosphoric by! Site is to convert g/mol, with its 2 P 's weight of a substance and is expressed g/mol. 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