*Response times vary by subject and question complexity. −97 kJ/mol 4. Hence mass of NaCl produced = 0.0019 x 58.45 = 0.111g. What mass of iodine, I2 (molar mass, 253.80 g/mol), must be used to prepare a 0.960 m solution if 100.0g of methanol, CH3OH, is used? For normal samples from earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight or the conventional atomic weight. Question: A) Number Of Moles Of I2 Used By The Vitamin C Solution B) Moles Of Vitamin C Reacting With The I2 (I.e. What is the molar mass of monoclinic sulphur. Calculate the molecular weight of polyisobutene if the density of solution is 0.88 g/mL. Molecular weight is actually an older term of “relative molar mass” or “molecular mass”, which is a dimensionless quantity equal to the molar mass divided by the molar mass constant defined by 1 g/mol. * See Answer *Response times vary by subject and question complexity. InChIKey. moles of KMnO 4 = 23.7 g KMnO 4 x (1 mol KMnO 4 /158 grams KMnO 4) moles of KMnO 4 = 0.15 moles KMnO 4; Now the liters of solution is needed. The balanced equation must now be used to convert moles of Fe(s) to moles of H 2 (g). View Answer. Keep in mind, this is the total volume of the solution, not the volume of solvent used to dissolve the solute. Want to see this answer and more? Want to see the step-by-step answer? −52 kJ/mol Questions are typically answered in as fast as 30 minutes. Calculate the mass of each of the following samples. The molar mass of I2 is 253.80 g/mol, and the molar mass of NI3 is 394.71 g/mol. Iodine 5. 1580772 Molar mass of I2 is 253. Iodine numbers are often used to determine the amount of unsaturation in fatty acids. The molar mass of i2 is 253.80 g/mol, and the molar mass of ni3 is 394.71 g/mol. The molar mass of iodine is 126.90447 grams/mole. how many moles of i2 will form 3.58 g of ni3? View Answer. In such a conversion, we use the molar mass of a substance as a conversion factor to convert mole units into mass units (or, conversely, mass units into mole units). Bromine 2. (a) 0.600 mol I2 (molar mass of I2 = 253.80 g/mol) ---- g (b) 2.78 mol PbS (molar mass of PbS = 239.3 g/mol) ----g (c) 6.80 mol C4H10 (molar mass of C4H10 = 58.14 g/mol) ----g Students explained why I 2 is solid at room temperature, but Br 2 is a liquid in part (d). What is the molar mass of the uranium fluoride? If the components of air are N 2 78%, O 2 21%, A r 0.9% and C O 2 0.1 % by volume, the molar mass of air would be (nearest integer): MEDIUM. The simplest type of manipulation using molar mass as a conversion factor is a mole-mass conversion (or its reverse, a mass-mole conversion). Then Match This Molar Mass To The Molar Mass Of The Halogens: F2, Cl2, Br2 And I2) 1. See Answer. (2)(126.9... See full answer below. The molar mass of I2 is 253.80 g/mol, and the molar mass of NI3 is 394.71 g/mol. Now, move on the next step – which is to calculate the molar enthalpy change. Therefore the molar mass of I2 is 2 times that, or 253.8. Chlorine 4. The exact term of the above molecular weight is “molar mass”, which is based on the atomic mass of each element. This example is prepared with "enough water" to make 750 mL … Under comparable conditions, gaseous I2 effuses at the rate of 15.0 mg/h. Calculations: Formula: Ki/I2 Molar Mass: 41.098 g/mol 1g=.02433208428634 mol Percent composition (by mass): Element Count Atom Mass %(by mass) Germanium . A sample of uranium fluoride is found to effuse at the rate of 17.7 mg/h.? 2. 0.765 1.31 78.6 4,720. This will be the starting point of our calculations.