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Two moles of neon contain 12,044281714.10e23 atoms.
500
0,125 L neon is equivalent to 0,0056 moles.
1 mole = 20.18 g of Neon = 6.023 x 1023 atoms of neon (A neon molecule has only one atom) So, 39 moles = 39 x 6.023 x 1023 atoms = 234.897 x 1023 atoms of neon
0.21 mol
Neon's got an atomic number of 20, so if you had 40 grams of neon gas you'd have around two moles of it. But neon LIGHT? Light's weightless, dude.
0.251 moles neon (6.022 X 1023/1 mole Ne) = 1.51 X 1023 atoms of neon -------------------------------------
Neon is a gaseous element. "1 neon" doesn't make much sense; you can have, for example, "1 liter of neon" or "1 kg of neon".
Helium, neon, and hydrogen are all gases at standard temperature and pressure.
49
50psi
Neon lights are usually with neon or other inert gases at a low pressure, where when voltage gets through they shine.