Molar Mass Examples The number under oxygen is 15.999 (take a look at a periodic table online or in your textbooks). The molar mass of oxygen is 15.999 g/mol. What about the molar mass of a compound, not just an element? To find the molar mass of a compound, you need to add the ...
Divide the mass of the substance in grams by its molecular weight. This will give you the number of moles of that substance that are in the specified mass. For 12 g of water, (25 g)/(18.015 g/mol) = 0.666 moles. When dividing by two units that both use grams in their measurement ...
Calculate Molar Mass of CompoundCharlotte RennuitSasha D. Hafner
(g) Hence, from (e) and (f), calculate the mass of Z needed to liberate 1 mole of I2.102g Mass of Z =...[2] 相关知识点: 试题来源: 解析 102gMass of Z needed to liberate 1 mol of =() g =102 g 反馈 收藏
Molar Mass of HCl:36.46 g/mol ElementSymbolAtomsMass % HydrogenH12.8% ChlorineCl197.2% Molarity (M) = (moles of solute) ÷ (liters of solution). To calculate the number of moles of a solute, you need two pieces of information, which you may have to infer from other data. The first...
(ii)Mass of CO:and H2O evolved = 4.481 g-3.655 g=0.826 g(iii)Let the amount of carbon dioxide evolved by x mol.nco, =n,o =x mol×(44.0)+×(18.0)=0.826x=0.826/(44.0+18.0)=0.01332(iv)uarco, = 2nco,=2×0.01332=0.02665 molMass of NaHCO, =0.02665×(23.0+1.0+12.0+3×16.0)=...
Calculate the percent by mass of molybdenum and sulfur in Mo2S5. Calculate the molar mass of the compound Mg(NO3)2. What is the mass of 6.5 moles of sulfur? Calculate the molecular formula for a compound having a molar mass of 131.39 g/mol and an empirical formula of C2HCl3. ...
Answer to: Calculate molar mass of a diprotic acid. It reaches the endpoint of the titration with NaOH at 28 ml. The initial concentration of NaOH...
Calculate the enthalpy of formation of sucrose(C11H22O11)from the following data: (i)C12H22O11+12O2→12CO2+11H2O,ΔH=−5200.7kJmol−1 (ii)C+O2→CO2,ΔH=−394.5kJmol−1 (iii)H2+12O2→H2O,ΔH=H2O,ΔH=−285.8kJmol−1. ...
Molar mass of KMnO4= 39.1 g + 54.9 g + (16.0 g x 4) Molar mass of KMnO4= 158.0 g Use this number toconvertgrams to moles. moles of KMnO4= 23.7 g KMnO4x (1 mol KMnO4/158 grams KMnO4) moles of KMnO4= 0.15 moles KMnO4 Now the liters of solution is needed. Keep in mind, this...