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| 1. |
What is kg-mole ? Find out the total number of electrons in a kg-mole of O_(2). |
| Answer» Solution :One kg-MOLE (or simply called one kilomole, i.e., kmol) is the MOLECULAR mass of the substance expressed in kilograms. In CGS system, one gram mole of a substance contains Avogadro's number of particles `(6.022xx10^(23))`. In MKS system, one kg-mole of a substance contains Avogadro's number of particles but its value is `6.022xx10^(25)`. THUS, 1 kg-mole of `O_(2)` will contain `6.022xx10^(26)` molecules and hence `16xx6.022xx10^(26)` ELECTRONS (as one molecules of `O_(2)` contains 16 electrons). | |