Diketahui massa 1 atom oksigen 2,70 x 10-23 g, berapakah Ar atom O jika massa 1 atom C-12 = 1,99 x 10-23 g...
PH Konsep Mol

Quiz
•
Chemistry
•
10th Grade
•
Medium
ENDANG NATALYA
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Unsur Cl mempunyai dua isotop di alam, yaitu 35Cl dan 37Cl dengan kelimpahan masing-masing 75,53% dan 24,47%. Massa atom 35Cl sebesar 34,97 dan massa atom 37Cl sebesar 36,67. Massa atom relatif Cl adalah...
33,47
34,35
35,46
36,64
37,53
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Unsur X mempunyai 2 jenis isotop yaitu 378X dengan massa 377,99 amu dan 383X dengan massa 382,98 amu. Apabila massa rata-rata unsur X adalah 379,64 amu, komposisi kelimpahan isotop unsur X tersebut adalah...
378X = 70,9% dan 383X = 29,1%
378X = 66,9% dan 383X = 33,1%
378X = 56,7% dan 383X = 43,3%
378X = 48,6% dan 383X = 51,4%
378X = 39,4% dan 383X = 60,6%
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Massa dari 1,204 x 1024 atom belerang adalah... (Ar S = 32)
16 gram
32 gram
64 gram
80 gram
160 gram
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Volume dari 4,25 gram gas NH3 pada suhu 250C dan tekanan 1 atm adalah...
2,24 Liter
2,4 Liter
5,6 Liter
6 Liter
8,96 Liter
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Massa dari 2,05 liter gas SO3 pada suhu 2270C dan tekanan 190 cmHg adalah...
4 gram
8 gram
10 gram
20 gram
40 gram
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jumlah molekul dari 1,48 gram Ca(OH)2 adalah... (Ar Ca = 40, O = 16, dan H = 1)
1,204 x 1021 molekul
1,204 x 1022 molekul
3,01 x 1022 molekul
6,02 x 1022 molekul
3,01 x 1023 molekul
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