
1 - KIMIA - XE9
Authored by FITRI MADINA
Chemistry
10th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Boron di alam mempunyai dua isotop, yaitu B-10 sebanyak 20% dan B-11 sebanyak 80%. Berapakah massa atom relatif (Ar) B?
10
10,5
10,8
11
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui atom Zn mempunyai isotop Zn-65 dan Zn-66. Jika Ar Zn = 65,4. Maka isotop Zn-66 di alam akan terdapat sebanyak …
20%
40%
60%
80%
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Massa rata – rata 1 atom unsur Q adalah 6,63 x 10-23 g, sedangkan massa 1 atom C-12 adalah 1,99 x 10-23 g. Massa atom relatif (Ar) unsur Q tersebut adalah …
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika massa 1 atom C-12 adalah 2 x 10-23 g dan massa rata – rata 1 atom X adalah 4 x 10-23 g. Berapa massa atom relatif X?
12
16
20
24
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Apabila massa Ne adalah 20,183. Berapakah massa atom relatif Neon?
20
20,5
21
22
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika diketahui Ar dari P = 31, C = 12 dan O = 16. Maka massa molekul relatif (Mr) dari P4 dan CO2 adalah …
31 dan 59
93 dan 44
124 dan 44
93 dan 28
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika diketahui Ar dari Na = 23 dan Cl = 35,5. Maka massa molekul relatif (Mr) dari NaCl adalah …
57,5
58,5
59,5
60,5
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