an5gelikesax
an5gelikesax
19-09-2016
Chemistry
contestada
how many atoms are there in 8.91 g si?
Respuesta :
Willchemistry
Willchemistry
27-09-2016
Atomic mass Si = 28.0855 u.m.a
28.0855 g --------------- 6.02x10²³ atoms
8.91 g ------------------- ?? atoms
8.91 x ( 6.02x10²³) / 28.0855 =
1.90x10²³ atoms of Si
hope this helps!
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