
UAS XI

Quiz
•
Chemistry
•
10th Grade
•
Hard
Nabsiah Fitriani
Used 2+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Suatu unsur X mempunyai dua isotop stabil di alam, yaitu 20X dan 22X. Jika massa atom relatif X adalah 20,2, maka kelimpahan isotop 20X di alam adalah…
1%
10%
50%
60%
90%
2.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Massa molekul relatif suatu senyawa adalah....
Massa satu molekul senyawa
Perbandingan 1 molekul senyawa dengan massa 1 atom C-12
Perbandingan massa 1 molekul senyawa dengan massa satu atom C-13
Perbandingan massa 1 molekul senyawa dengan 1/12 × massa 1 atom C-12
Perbandingan massa satu molekul dengan 1/12 massa C-13
3.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Diketahui Ar H = 1, S = 32, dan O = 16, maka Mr H2SO4....
88
92
108
89
98
4.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Bila massa atom relatif Fe = 56, S = 32, O = 16, maka massa rumus relative Fe2(SO4)3 adalah…
104
192
152
248
400
5.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Di antara 1 gram berikut yang mengandung jumlah partikel paling banyak adalah…
H2O (Ar H = 1, O = 16)
NH3 (Ar N = 14, H = 1)
HCl (Ar H = 1, Cl= 35,5)
CH4 (Ar H = 1, C = 12)
CO2(Ar C = 12, O = 16)
6.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Jumlah molekul yang terdapat di dalam 4 gram CH4 (Ar C = 16, H = 1) adalah…
4 mol
2 mol
1 mol
1/2 mol
1/4 mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Perbandingan massa unsur dalam tiap senyawa selalu tetap. Pendapat ini dikemukakan oleh:
Avogadro
Boyle
Dalton
Proust
Lavoiser
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