stokiometri
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
AGUSTINA, M.Pd.
Used 49+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Angka koefisien reaksi merupakan perbandingan:
1. Masa zat-zat yang bereaksi
2. Volume gas-gas yang bereaksi
3. Mol-mol zat yang bereaksi
4. Molekul zat-zat yang bereaksi
1, 2, 3, 4
1, 2, 3
1, 3,4
2,3,4
1, 2,4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Untuk pembakaran 4 mol gas butana secara
Sempurna menurut reaksi
C4H10 (g) + O2 (g) à CO2 (g) + H2O (g)
diperlukan gas oksigen sebanyak :
6,5 mol
8 mol
16 mol
26 mol
32 mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 12,04 . 1021 atom Mg direaksikan dengan HCl menurut reaksi
Mg(s) + 2HCl(aq) ® MgCl2(aq) + H2(g), maka jumlah molekul HCl yang diperlukan agar semua atom Mg habis bereaksi adalah…
24,08.1021
12,04.1021
24,08.1023
12,08.1023
24,08.1024
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 32 gram kalsium karbida (CaC2) dilarutkan dalam air menghasilkan gas asetilena(C2H2) menurut reaksi :
CaC2(s) + 2H2O(l) ® Ca(OH)2(s) + C2H2(g)
Jumlah partikel gas asetilen yang terbentuk adalah…. (Ar : Ca=40, C=12)
3,01 x 1022 molekul
6,02 x 1022 molekul
3,01 x 1023 molekul
6,02 x 1023 molekul
3,01 x 1024 molekul
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
"Dalam sistem tertutup, Massa zat sebelum dan sesudah reaksi akan tetap". Pernyataan tersebut merupakan bunyi hukum?
Hukum Kekekalan Massa
Hukum Perbandingan Tetap
Hukum Avogadro
Hukum Dalton
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapa nilai volume yang diukur pada suhu kamar (27°C dan 1 atm) ?
2,44
24,4
2,24
22,4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapa jumlah atom/partikel dari 0,5 mol atom Na ?
3,01 x 10^23
3,01 x 10^16
30,1 x 10^12
30,1 x 10^23
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