The recruitment, selection, employment, and training of apprentices during their apprenticeship shall be without discrimination because of race, color, religion, national origin, or sex. Job Readiness. Applicants must be: 1  physically able to perform the work of the trade.  be prepared to work at extreme heights.
Best Answer: neutrons + protons = 23 ... Sodium Mass Number ... Na Mass Number ... Sodium (Na) Sodium has an atomic number of 11 and a mass of about 23g ... aprox ...
A hydrogen nucleus is a proton, and the mass of a proton is 1.67Ã10â27kg. The most recent value for the radius of a proton is 8.41Ã10â16m. The mass of a hydrogen atom is 1.67Ã10â27kg. The radius of a hydrogen atom, calculated using self-consistent field functions, is 53 pm or 53Ã10â12m. V=(43)Ïr3=(43)Ï(53Ã10â12m)3=6.24Ã10â31m3. Ï=mV=1.67Ã10â27kg6.24Ã10â31m3=2.7Ã103kg/m3=2.7 kg/dm3.