Ulangan Harian Stoikiometri Kelas X

Quiz
•
Chemistry
•
10th Grade
•
Medium
Ghina Yusriya Mardiyah
Used 51+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu unsur X mempunyai dua isotop di alam, yaitu X-63 dan X-65. Jika massa atom relatif X adalah 63,5; maka kelimpahan isotop X-65 di alam adalah....
10%
20%
25%
50%
75%
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bila massa suatu atom C-12 adalah 1,99 x 10-23 gram dan Ar X = 60, maka massa rata-rata 1 atom X adalah....
9,95 x 10-23 gram
1,19 x 10-22 gram
3,02 x 10-22 gram
2,39 x 10-24 gram
3,98 x 10-24 gram
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jumlah atom besi di dalam sepotong besi yang mempunyai massa 112 gram adalah.... (Ar Fe = 56)
6,02 x 1024 atom
6,02 x 1022 atom
3,01 x 1022 atom
3,01 x 1023 atom
1,204 x 1024 atom
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bila massa gas CO2 adalah 11 gram, maka volume gas CO2 pada keadaan STP adalah.... (Ar C = 12, O = 16)
5,6 liter
0,25 liter
1 liter
1,12 liter
4 liter
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bila gas hidrogen memiliki massa 1 gram, maka volume gas hidrogen yang diukur pada suhu 25 dan tekanan 1 atm adalah....
10 liter
12,2 liter
15 liter
11,8 liter
12 liter
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dalam suatu ruangan terdapat gas NO yang memiliki volume 5,6 liter. Jika diketahui Ar dari masing-masing unsurnya, massa gas NO adalah.... (Ar N = 14, O = 16)
4 gram
1 gram
0,5 gram
5 gram
7,5 gram
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu senyawa mengandung 23,3% unsur Co; 25,3% Mo; dan 51,4% Cl. Rumus empiris senyawa tersebut adalah…
Co3Mo2Cl12
Co3Mo2Cl11
Co4Mo2Cl11
Co2Mo3Cl12
Co2Mo3Cl11
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