
Quiz Formatif Ar dan Mr
Authored by Dwie Annisa
Chemistry
10th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 15 pts
Diketahui massa rata-rata atom X adalah 2,66 × 10-23 gram dan massa 1 atom C-12 = 1,99 × 10-23 gram. Tentukanlah massa atom relatif (Ar) unsur X tersebut!
15,76
16,01
16,04
15,04
16,76
2.
MULTIPLE CHOICE QUESTION
1 min • 15 pts
Oksigen terdiri atas 3 isotop yaitu isotop 16O dengan kelimpahan 99,7%, 17O dengan kelimpahan 0,04%, dan 18O dengan kelimpahan 0,2%. Tentukanlah massa atom relative oksigen!
15,99
15,98
15,89
15,97
15,90
3.
MULTIPLE CHOICE QUESTION
1 min • 15 pts
Jika massa 1 atom C-12 diketahui sebesar 1,9 × 10-26 kg, sedangkan massa 1 atom Na diketahui sebesar 3,6 × 10-26 kg, maka massa atom relatif
22,73
22,5
22,3
23,05
23,01
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Massa 1 atom C-12 = 12 sma
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Apabila massa atom relatif Fe=56, S=32, O=16. Maka massa molekul relatif dari senyawa Fe2(SO4)3 adalah ....
104
152
192
248
400
6.
MULTIPLE CHOICE QUESTION
1 min • 15 pts
Massa Atom Relatif H adalah 1
True
False
7.
MULTIPLE CHOICE QUESTION
1 min • 15 pts
Diketahui massa atom relatif Na = 23, H=1, O=16, C=12, dan N=14 serta beberapa rumus senyawa berikut.
(1) NaOH
(2) CH3COOH
(3) Na2CO3
(4) NH4OH
(5) NaCl
Diantara senyawa tersebut, yang mempunyai massa molekul 60 ditunjukkan oleh nomor ...
(1)
(2)
(3)
(4)
(5)
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