stokiometri

stokiometri

10th Grade

10 Qs

quiz-placeholder

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stokiometri

stokiometri

Assessment

Quiz

Chemistry

10th Grade

Practice Problem

Hard

Created by

AGUSTINA, M.Pd.

Used 49+ times

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10 questions

Show all answers

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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