taybeene7
taybeene7
22-09-2016
Chemistry
contestada
5.40 g B determine the number of atoms
Respuesta :
Willchemistry
Willchemistry
27-09-2016
Atomic mass Boron ( B ) = 10.811 u.m.a
10.811 g -------------- 6.02x10²³ atoms
5.40 g ----------------- ?? atoms
5.40 x ( 6.02x10²³) / 10.811 =
3.0069x10²³ atoms
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