ASESMEN PENILAIAN HARIAN

Quiz
•
Chemistry
•
11th Grade
•
Hard
Astutik Astutik
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
1. Unsur renium (Re) mempunyai dua jenis isotop dialam, yaitu 185Re dan 187Re. Kelimpahan isotop 187Re sebesar 62,65% dan massanya 186,956 amu. Jika massa rata-rata atom Re adalah 186,207 amu, maka massa isotop 185Re adalah…
A. 186,676 amu
B. 186,487 amu
C. 185,940 amu
D. 184,950 amu
E. 184,316 amu
2.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
2. Jika diketahui Ar K = 39, Ca = 40, Na = 23, Mg = 24, Ni = 59, O =16 dan S =32.Diantara senyawa berikut yang memiliki massa molekul relatif terbesar adalah…
A. K2SO4
B. CaSO4
C. Na2SO4
D. MgSO4
E. NiSO4
3.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
3. Jika 3,01 x 1022 atom unsur Z, massanya 6gram maka massa atom relative unsur Z adalah…
A. 10
B. 15
C. 30
D. 60
E. 120
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Aluminium larut dalam asam klorida membentuk aluminium klorida dan gas hydrogen. Persamaan reaksinya sebagai berikut: 2Al (s) + 6HCl (aq) → 2AlCl4 (aq) + 3H2 (g)
Jika massa aluminium 5,4gram dan Ar Al = 27, maka volume gas H2 yang terbentuk pada keadaan standar adalah…
A. 1,12 liter
B. 2,24 liter
C. 3,36 liter
D. 4,48 liter
E. 6,72 liter
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5. Kadar Fe2O3 dalam suatu bijih besi adalah 85%. Banyahnya besi yang terdapat dalam 1ton bijih tersebut adalah… (Ar Fe =56, dan O =16)
A. 850 kg
B. 560 kg
C. 280 kg
D. 112 kg
E. 56 kg
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6. Sebanyak 300 mL larutan NaCl mengandung 1,806 x 1022 partikel. Kosentrasi larutan NaCl tersebut sebesar… M
A. 0,05
B. 0,10
C. 0,15
D. 0,20
E. 0,25
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7. Sebuah wadah yang mempunyai volume 250mL pada suhu 25oC dan tekanan1.520mmHg mampu menampung 0,348gram suatu gas. Gas yang dimaksud adalah…
Ne (Ar =10)
B. N2 (Mr =28)
C. CH4 (Mr =16)
D. NH3 (Mr =17)
E. H2S (Mr =34)
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