10 Judo Throws & 20 Dojo Drills: Judo training drills to help kids master judo techniques

10 Judo Throws & 20 Dojo Drills: Judo training drills to help kids master judo techniques

Kimia Jika diketahui massa atom relatif fe = 56, s = 32, o = 16, hitung massa besi yang terdapat dalam 4 gram fe2 (so4)3

Jika diketahui massa atom relatif fe = 56, s = 32, o = 16, hitung massa besi yang terdapat dalam 4 gram fe2 (so4)3

massa besi yang terdapat didalam 4 gram fe2 (so4)3 adalah 1,12gram

Pembahasan

DIKETAHUI

  • Ar Fe = 56
  • Ar S = 32
  • Ar O = 16
  • massa = 4 gram

DITANYAKAN

Massa besi = ____?

1. hitung Mr nya

Mr Fe2(So4)3 = 2 × Ar Fe + 3× Ar S + 12×Ar O

= 2×56 + 3× 32 + 12 ×16

= 400 g/mol

Massa besi = (2× Ar Fe / Mr )× Massa

= (2× 56/400)×4

= 0,28 ×4

= 1,12 gram

[answer.2.content]