Evaluasi Stoikiometri
Quiz
•
Chemistry
•
10th - 12th Grade
•
Hard
Siti Fatimah
Used 3+ times
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35 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Hukum perbandingan tetap menyatakan bahwa ….
Massa zat sebelum dan sesudah reaksi adalah tetap
Molekul merupakan partikel terkecil suatu senyawa
Dalam suatu senyawa perbandingan massa unsur-unsur penyusunnya selalu tetap
Perbandingan massa unsur-unsur penyusun senyawa selalu berubah-ubah
Perbandingan massa materi yang mnyusun campuran selalu tetap
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pernyataan yang paling sesuai tentang hukum Lavoisier adalah ….
Jumlah molekul sebelum dan sesudah reaksi selalu sama
Volume gas sebelum dan sesudah reaksi selalu sama
Perbandingan massa unsur penyusun senyawa selalu tetap
Massa zat sebelum dan sesudah reaksi selalu sama
Perbandingan massa unsur penyusun senyawa berubah-ubah
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Jumlah mol 3,01x1023 atom argon adalah ...
0,1
0,5
1,5
2,0
3,0
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Jika sepotong besi dibiarkan di udara sehingga semua menjadi karat besi, maka massa karat besi ….
Sama dengan massa besi semula
Lebih kecil dari massa besi mula-mula
Lebih besar dari massa besi mula-mula
Setengah massa besi mula-mula
Seperempat massa besi mula-mula
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pada pembakaran sempurna 1 liter gas Cx Hy (T.P) dihabiskan 3 liter gas oksigen (T.P) dan dihasilkan 2 liter gas karbon dioksida (T.P).
Cx Hy (g) + O2(g) → CO2(g) + H2O(l) (belum setara) Rumus molekul gas Cx Hy itu adalah ….
CH2
C2H4
C2H2
C2H6
C3H6
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Perbandingan massa karbon dan oksigen dalam senyawa CO2 adalah 3 : 8. Pada pembakaran 12 gram suatu senyawa karbon dihasilkan 22 gram CO2. Unsur karbon dalam senyawa tersebut adalah ….
23%
27%
50%
55%
77%
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Unsur X dan Y membentuk dua jenis senyawa berturut-turut mengandung 40% dan 50% unsur X. Jika massa unsur X dalam kedua senyawa itu sama, maka perbandingan massa unsur Y dalam senyawa I : senyawa II adalah ….
1 : 2
1 : 3
2 : 3
2 : 1
3 : 2
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