Do a quick conversion: 1 grams H3PO4 = 0.010204583427424 mole using the molecular weight calculator and the molar mass of H3PO4. Molar Mass: 97.9952. Mass Na3PO4 formed = 0.833 mol X 163.9 g/mol = 137 g Na3PO4 work out the limiting reagent. d. How many H atoms are there in 2.5 mol H3PO4.2.5pt The third column labeled Mass of Washers m subscript w (kilograms) has entries 0.0049, empty. What is the molar mass of H3PO4? See also our theoretical yield calculator for chemical reactions (probably your next stop to finish the problem set). Example Reactions: • PH3 + 2 O2 = H3PO4 • 3 KOH + H3PO4 = K3PO4 + 3 H2O • H3PO4 + 5 HCl = PCl5 + 4 H2O • H3PO4 + 3 NH3 = (NH4)3PO4 • H3PO4 + NaOH = NaH2PO4 + H2O How many oxygen atoms are in one unit of H3PO4? Start with a liter of solution which is 1000 mLx 1.680 g/mL gives a mass of 1680 g. mass H3PO4 = 1680 g solution x 85 parts H3PO4/100 parts solution = 1430 g H3PO4. Mass H3PO4 remaining = 18.3 g H3PO4 remaining. Calculations: Formula: H3PO4 Molar Mass: 97.9937 g/mol 1g=1.02047376515021E-02 mol Percent composition (by mass): Element Count Atom Mass %(by mass) mole H3PO4 = 1430 g H3PO4 x 1 mole H3PO4/98 g H3PO4 = 15 moles. moles of H3PO4 = 25.4 g x a million mol/ninety 8 g = 0.259 mol H3PO4 Kg of solvent = (100g - 25.4 g) = seventy 4.6 g = 0.0746 kg Molality = moles of solute/kg of solvent = 0.259 mol/0.0746 kg solvent Molality = 3.47m From its MSDS sheet it is 1.680g/mL. H3PO4 is a strong acid and corrosive. Mass H3PO4 consumed = 2.50 mol NaOH X (1 mol H3PO4 / 3 mol NaOH) X 97.99 g/mol = 81.7 g H3PO4 consumed. Now there is 15 moles of H3PO4 in the initial liter so it is 15M H3PO4! Can someone give me a step by step to the solution? The one that produces the least H3PO4 is the limiting reagent. The other product of the reaction is water. H3PO4 is a colorless viscous liquid at room temperature. c. How many moles of PO43-ions are present in 2.5 moles of phosphoric acid, H3PO4? A 5.00 mL sample of an aqueous solution of H3PO4 requires 55.0 mL of 0.258 M NaOH to convert all of the H3PO4 to Na2HPO4. The molar mass of H3PO4 (phosphoric acid) is: 97.993 grams/mol. Complete the following calculations for H3PO4.4 pts (1pt each) a. Solution The molar mass of H3PO4 is 97.99 g. The percent by mass of each of the elements in H3PO4 is calculated as follows: %H=(3(1.008 g) H/ 97.99 g H3PO4)*100%= 3.086% Molar mass of *2H3PO4 is 195.9904 g/mol Convert between *2H3PO4 weight and moles To do this work out how much H3PO4 you would get if all of each reagent individually were to fully react. P4O10 + 6H2O ----> 4 H3PO4. b. 1. - 13159451 ams) has entries 4.9, 14.7. molar mass of H3PO4 IS 97.99g/mol. moles H2O = 12.0 g / 18.016 g/mol = 0.66607 mol. I don't know what to do with this, I tried: (.005 L)(x M) = (.055 L)(0.258 M) And I got 2.838 mol/L But the answer is wrong apparently. moles P4O10 = mass / molar mass = 10.00 g / 283.88 g/mol = 0.035226 mol. 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