Supaya reaksi a Al2S3 + b H2O + c O2 → d Al(OH)3 + e S menjadi reaksi setara, maka harga koefisien reaksi a, b, c, d, dan e berturut-turut adalah .....
Stokiometri _XI 3

Quiz
•
Chemistry
•
11th Grade
•
Hard
emmimosa arunmba
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
2, 6, 3, 4, dan 6
1, 3, 2, 2, dan 3
2, 6, 4, 2, dan 3
4, 6, 3, 4, dan 12
2.
MULTIPLE CHOICE QUESTION
45 sec • 10 pts
Diketahui reaksi NaOH + HCl → NaCl + H2O. Yang merupakan pereaksi adalah .....
NaOH dan H2O
HCl dan H2O
NaCl dan H2O
NaOH dan HCl
3.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
Sebanyak 11,2 gram serbuk besi (Fe) dipanaskan secara sempurna dengan 6,4 gram serbuk belerang (S), sesuai reaksi:
Fe + S → FeS
Senyawa besi(II) sulfida (FeS) yang terbentuk sebanyak .....
6,4 gram
11,2 gram
12,8 gram
17,6 gram
4.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Massa dari 1,204 × 1022 molekul NH3 (Ar N = 17 dan H = 1) adalah .....
0,17 gram
3,40 gram
1,70 gram
0,34 gram
5.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Massa dari 4,48 liter gas X2 pada keadaan standar (STP) adalah 14,2 gram. Massa atom relatif unsur X tersebut adalah ....
71
142
35,5
105,5
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Volume dari 8 gram SO3 (Ar S = 32 dan O = 16) pada suhu 30 °C dan tekanan 1 atm (R = 0,082) adalah ....
1,24 liter
6,12 liter
5,24 liter
2,48 liter
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Jika diketahui Ar Ca = 40, C = 12, O = 16 dan bilangan Avogadro = 6,02×1023, maka 50 gram CaCO3 mempunyai jumlah molekul .....
3,10 × 1023
6,02 × 1022
3,01 × 1021
1,204 × 1023
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