Massa Atom & Molekul Relatif
Quiz
•
Chemistry
•
10th - 12th Grade
•
Medium

Abdullah Rizky
Used 2+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
1. Jika diketahui massa atom unsur Fe = 55,847 sma dan massa 1 atom C-12 = 12,000 sma. Berapakah massa atom relatif Fe ?
55,846 sma
55,846 gram
55,847 gram
55,847 sma
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
1. Jika diketahui massa atom relatif (Ar) dari atom B adalah 36 dan massa 1 atom 12C adalah 12 sma. Tentukan massa rata-rata 1 atom B dalam satuan sma ?
37 sma
35,5 sma
36 sma
35 sma
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
1. Jika diketahui Ar Fe =56 sma dan massa atom 12C = 2 x 10-23. Tentukanlah massa rata-rata 10 atom besi ?
93 x 10-23
9,3 x 10-23
93 x 10-22
9,3 x 10-22
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Oksigen di alam terdiri dari 3 isotop dengan kelimpahan berikut:
16O 17O 18O
99,76 % 0,04 % 0,20 %
Hitunglah massa atom rata-rata (Ar) dari unsur Oksigen tersebut !
17 sma
17 gram
16 sma
16 gram
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
1. Tembaga memiliki dua isotop yaitu 63Cu dan 65Cu. Jika Ar rata-rata Cu = 63,5. Tentukan % kelimpahan isotop 63Cu dan 65Cu ?
persentase isotop 63Cu = 75% dan persentase isotop 65Cu = 25%
persentase isotop 63Cu = 25% dan persentase isotop 65Cu = 75%
persentase isotop 63Cu = 70% dan persentase isotop 65Cu = 30%
persentase isotop 63Cu = 50% dan persentase isotop 65Cu = 50%
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
1. Hitunglah nilai yang terkadandung dalam massa molekul relatif (Mr) dari senyawa Ca(OH)2 (Ar Ca =40, Ar O = 16, Ar H = 1) ?
75
76
74
78
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
1. Hitunglah nilai yang terkadandung dalam massa molekul relatif (Mr) dari senyawa Aluminium Sulfat Al2(SO4)3 (Ar Al = 27, Ar S = 32, Ar O = 16 ) !
344
346
342
345
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