CHEM 1A Lecture Notes - Ideal Gas Law, Molar Mass
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CHEM 1A Full Course Notes
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3/7 - density, molar mass, & ideal gas law density = mass / volume molar density = mols / volume. P / rt = n / v molar mass units = g / mol density of substance = g / l molar density = mol / l ex. T = 25 c density = 4. 24 g / l molar mass = Pv = nrt n / v = p / rt = 1. 05 atm / [(0. 0821 (l atm / mol k)) 298 k] = 0. 0429 mol / l need g / mol, have g / l g / l mol / l. = g / mol (4. 24 g / l) / (0. 0429 mol / l) = 98. 9 g / mol. C 98. 9g (0. 121)(1 mol / 12. 01 g) = 1 mol c. O 98. 9 g(0. 162)(1 mol / 16. 00 g) = 1 mol o. Cl 98. 9g (. 717)(1 mol / 35. 3 g) = 2 mol cl.
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