1 0.042 Mg sinomain... I
20.0659 Ma
30.0923×10 A
0.042 ug = ? g Meda
2
-6
= 0.042 x 10
-2 -6
= 4.2×10×10
-8
0.042 Mg
= 4.2×10
g
S
0.0659 = 1 1
6
= 0.0659×10
6
= 6.59 × 10 × 10
4
0.0659 M2= 6.59×10
มีเท่
มีตาข่าย A
0.0123 = A
im
-2 -9
= 1.23× 10 × 10
-11
7.23×10
