
soal Ar dan Mr kelas 10
Authored by Muhammad Ilham
Chemistry
10th Grade
Used 11+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika diketahui massa atom C-12 adalah 2 x 10-23 gram. Massa 1 atom unsur X = 2,67 x 10-23 gram. Maka massa molekul reatif dari unsur X adalah
16
18
20
22
32
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Klorin terdiri atas dua jenis isotop, yaitu Cl-35 dan Cl-37 dengan kelimpahan masing-masing berturut-turut adalah 75% dan 25%. Maka berapa massa atom relatif (Ar) dari klorin tersebut
36
35,8
35,6
35,5
35,4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika diketahui Ar dari Ba = 137, S = 32, O = 16, Mg = 24, dan H = 1. maka massa molekul relatif (Mr) dari BaSO4 dan MgSO4.7H2O adalah..
233 dan 232
233 dan 246
233 dan 320
238 dan 326
238 dan 346
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hitunglah massa 0,1 mol batu kapur (CaCO3) jika diketahui Ar Ca = 40, Ar C = 12 dan Ar O = 16).
5 gram
10 gram
15 gram
20 gram
25 gram
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika massa 1 atom X = p gram , massa 1 atom C-12 = q gram, maka Ar X adalah ....
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika diketahui massa atom relatif kalium ( K ) sebesar 39, massa rata - rata 1 atom K adalah ....
39 x 1/12 massa 1 atom C- 12
39 x massa 1 atom C- 12
1/12 x massa 1 atom C-12
12 x 39 massa 1 atom C - 12
39/12 x 1/12 massa 1 atom C- 12
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Massa atom relatif X adalah 2 kali massa atom-12 dan tiga kali massa atom Y. Jadi massa atom Y adalah ....
8
12
36
42
72
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