
ASTS 1 2024
Authored by Susri Alfuadi
Chemistry
11th Grade
Used 5+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perbandingan massa karbon dengan massa oksigen dalam CO2 adalah 3 : 4. Berapakah massa masing-masing unsur yang terdapat dalam 28 gram gas karbon dioksida?
C = 12 gram, O = 16 gram
C = 16 gram, O = 12 gram
C = 10 gram, O = 18 gram
C = 18 gram, O = 10 gram
C = 14 gram, O = 14 gram
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada reaksi:
PCl3(g) + Cl2(g) → PCl5(g)
Perbandingan volume PCl3 : Cl2 : PCl5 adalah....
1 : 2 : 1
1 : 2 : 3
1 : 1 : 1
1 : 1 : 2
2 : 1 : 1
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Bila dua unsur, S dan O, dapat membentuk dua senyawa, yaitu SO2 dan SO3, bagaimanakah perbandingan massa unsur O pada senyawa pertama dan senyawa kedua? (Ar S = 32 dan O = 16).
2 : 3
3 : 2
1 : 1
1 : 2
2 : 1
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berikut adalah hasil percobaan reaksi antara tembaga (Cu) dengan belerang (S) menghasilkan tembaga sulfida.
1 : 2
1 : 3
2 : 1
3 : 1
2 : 3
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dua liter suatu gas hidrokarbon (CxHy) dibakar sempurna memerlukan 6 liter gas oksigen dan menghasilkan 4 liter gas karbon dioksida dan uap air. Rumus kimia gas hidrokarbon tersebut adalah.....
CH4
C2H6
C2H8
C2H5OH
C2H4
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada suhu dan tekanan tertentu, 5 liter gas CO2 mengandung 6,02 × 1023 molekul. Pada suhu dan tekanan yang sama, berapakah volume dari 3,01 × 1024 molekul gas NH3?
0,25 liter
2,5 liter
25 liter
10 liter
50 liter
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Delapan liter campuran gas metana (CH4) dan propana (C3H8) yang dibakar memerlukan 25 liter gas oksigen. Volume CH4 dan C3H8 masing-masing adalah ... liter
5 dan 3
3 dan 5
4 dan 4
6 dan 2
2 dan 6
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