
Penugasan Kimia
Authored by Nevi Nurzaman
Chemistry
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Sejumlah logam besi dipijarkan dengan 3,2 gram belerang menghasilkan 8,8 gram senyawa besi(II) sulfida. Berapa gram logam besi yang telah bereaksi?
5,6 gram
5,7 gram
5,8 gram
5,9 gram
6 gram
2.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Jika di dalam senyawa FeS perbandingan massa Fe : S = 7 : 4, maka untuk menghasilkan 4,4 gram senyawa FeS diperlukan Fe dan S berturut-turut sebanyak!
massa Fe dan S berturut-turut adalah 2,9 gram dan 1,7 gram
massa Fe dan S berturut-turut adalah 2,8 gram dan 1,8 gram
massa Fe dan S berturut-turut adalah 2,8 gram dan 1,6 gram
massa Fe dan S berturut-turut adalah 2,9 gram dan 1,6 gram
massa Fe dan S berturut-turut adalah 2,8 gram dan 1,8 gram
3.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Setiap 2 liter gas nitrogen tepat habis bereaksi dengan 3 liter gas oksigen menghasilkan 1 liter gas oksida nitrogen. Jika volume diukur pada suhu dan tekanan yang sama, tentukan rumus molekul oksida nitrogen tersebut.
N4O6
N3O12
N2O6
N2O3
N4O3
4.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Nilai bilangan okidasi dari Cr didalam K2CrO4 adalah . . .
a. 4
b. 5
c. 6
d. 7
e. 8
5.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Nilai bilangan okidasi dari S didalam Na2SO3 adalah . . .
a. 4
b. 5
c. 6
d. 7
e. 8
6.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Jika reaksi diatas disetarakan makan koefisien a, b, dan c berturut-turut adalah . . .
a. 4, 1, 1
b. 4, 1, 2
c. 4, 1, 3
d. 4, 1, 4
e. 4, 1, 5
7.
MULTIPLE CHOICE QUESTION
15 mins • 10 pts
Jika reaksi tersebut disetarakan maka nilai koefisien a, b dan c adalah . . .
a. 8, 1, 2
b. 8, 2, 1
c. 16, 1, 8
d. 16, 2, 2
e. 8, 1, 1
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