gillianc059
gillianc059
02-10-2020
Chemistry
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Convert 28 grams Na to moles Na
Respuesta :
dvnl
dvnl
02-10-2020
moles = mass/molar mass
Mass of Na given = 28 grams
Molar mass of Na = 22.989 grams/mol
So, 28 grams of Na = 28/22.989 = 1.218 moles Na ≈ 1.2 moles Na
Since the mass was given to two significant digits, the number of moles is approximated to two significant digits as well, that is, about 1.2 moles.
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