28) 3Mg + 22HNO₃ + 29H₂ --> 3(MgNO₃)₂ + 8NH₄NO₃ + 24H₂O Jawaban : (Tidak ada di opsi) 29) Ar Ca = 40 Mr CaCO₃ = 100 massa CaCO₃ = 40 kg massa Ca = 40/100 x 40 massa Ca = 16 kg Jawaban : C 30) Ar Fe = 26 Mr FeS = 58 persentase Fe dalam FeS = 26/58 x 100% = 44,8% Jawaban : D
Verified answer
STOIKIOMETRI28) 3Mg + 22HNO₃ + 29H₂ --> 3(MgNO₃)₂ + 8NH₄NO₃ + 24H₂O
Jawaban : (Tidak ada di opsi)
29) Ar Ca = 40
Mr CaCO₃ = 100
massa CaCO₃ = 40 kg
massa Ca = 40/100 x 40
massa Ca = 16 kg
Jawaban : C
30) Ar Fe = 26
Mr FeS = 58
persentase Fe dalam FeS = 26/58 x 100% = 44,8%
Jawaban : D