Respostas

2014-04-08T11:37:37-03:00
X    ------ 6.10²³ moléculas
0.152 g -------------1,20.10²¹ moléculas,

x = 76g

a MM molar
N2Ox ~> 76g

N= 14
O = 16

14 + 14  + 16X = 76

16X = 48

X  =3






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