Tentukan massa NaOH dalam 100 ml larutan NaOH 1 M! (Mr NaOH = 40 g/mol)

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Tentukan massa NaOH dalam 100 ml larutan NaOH 1 M! (Mr NaOH = 40 g/mol)

M =?
n = frac{m}{Mr}
m = Mr. n
n = M.V
V = 100 ml => 0,1 L
n =  0,1×1
n= 0,1
m = 40. 0,1
m = 4 gram

M=g/mr * 1000/v
 1 = g/40 * 1000/100
 1 = g/40 * 10

40= 10 G

G= 4 gram