
Ar/Mr dan konsep mol
Authored by noor azizah
Chemistry
10th Grade
Used 111+ times

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15 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
30 sec • 1 pt
Jumlah mol air yang mengandung 2,408 x 1023 atom molekul air adalah…(L = 6,02 x 1023).
0,02 mol
0,04 mol
0,05 mol
0,2 mol
0,4 mol
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu senyawa memiliki massa molar (Mr)= 60 gram/mol. Massa 0,25 mol senyawa tersebut adalah…
10 gram
12 gram
15 gram
20 gram
24 gram
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jumlah mol dari 11, 2 Liter gas oksigen pada keadaan standar (STP). (Diketahui Vm = 22,4 liter/mol)
0.1 mol
1 mol
0.5 mol
2 mol
2,5 mol
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