Stoikiometri - Terjago Education

Quiz
•
Chemistry
•
10th Grade - University
•
Hard
Fariz Bakti
Used 1+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Logam aluminium dapat bereaksi dengan larutan HCl menghasilkan larutan AlCl3 dan gas H2. Berapa gram H2 yang terbentuk dan jumlah molekul hidrogen dari 9 gram aluminium?
(Ar Al = 27, H = 1)
1 gram dan 6,02 x 1023 molekul
1,5 gram dan 6,02 x 1023 molekul
1 gram dan 3,01 x 1023 molekul
1,5 gram dan 3,01 x 1023 molekul
Semua pilihan yang lain salah
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada saat korek api gas dinyalakan, reaksi yang terjadi adalah sebagai berikut.
C4H10(g) + O2(g) → CO2(g) + H2O(l)
Jika pada reaksi tersebut dihasilkan 88 gram gas CO2, hitunglah massa C4H10 yang bereaksi!
(Ar C = 12, O = 16, H = 1)
29 gram
31 gram
38 gram
40 gram
Pilihan yang lain salah
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Gambar di atas merupakan salah satu mineral mika bernama muscovite dengan rumus senyawa KAl2(AlSi3O10)(OH)2. Hasil analisis sampel muscovite menunjukkan kandungan Si sebanyak 0,42 gram. Massa sampel (senyawa) yang dianalisis adalah....
(Ar H = 1, O = 16, Al = 27, Si = 28, K = 39)
1,96
1,97
1,98
1,99
Semua pilihan lain salah
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah molaritas larutan yang dibuat dengan melarutkan 5,85 gram NaCl (Ar Na = 23, Cl = 35,5) dalam 500 mL air?
0,1 M
0,2 M
0,3 M
0,4 M
0,5 M
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tentukan RE senyawa yang mengandung 75% karbon dan 25% atom hidrogen! (Ar C = 12, H = 1)
CH4
C2H8
C2H4
C2H6
Informasi di soal kurang lengkap
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika 4,88 gram barium klorida berhidrat (BaCl2.xH2O) dipanaskan, maka tersisa 4,16 gram padatan. Bagaimanakah rumus kimia senyawa hidrat tersebut?
(Ar Ba = 137, Cl = 35,5, H = 1, dan O = 16)
BaCl2 . H2O
BaCl2 . 2 H2O
BaCl2 . 3 H2O
BaCl2 . 4 H2O
BaCl2 . 5 H2O
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tembaga(II) sulfat berhidrat dipanaskan, ternyata berat padatan yang tersisa 64%. Tentukan rumus kimia senyawa tersebut!
(Ar Cu = 63,5, S = 32, H = 1, dan O = 16)
CuSO4 . 6 H2O
CuSO4 . 5 H2O
CuSO4 . 4 H2O
CuSO4 . 3 H2O
CuSO4 . 2 H2O
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