
konsep mol, formula dan persamaan kimia
Quiz
•
Chemistry
•
4th Grade
•
Hard
KASTURI Moe
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berapakah bilangan atom litium yang mempunyai jisim yang sama dengan 2 atom nitrogen?
[Jisim atom relatif: Li = 7; N = 14]
2
4
6
8
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jisim atom relatif plumbum ialah 207. Antara pernyataan berikut, yang manakah benar?
[Jisim atom relatif: Na = 23]
0.01 mol plumbum berjisim 2.07 g
20.7 g plumbum mengandungi 6.02 x 1021 atom
1 mol plumbum mempunyai isi padu 24 dm3 pada keadaan bilik
Jisim satu atom plumbum adalah sama dengan jisim 7 atom natrium
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Antara bahan berikut, yang manakah mempunyai 3.01 x 1023 atom?
0.25 mol air
0.5 mol karbon
0.5 mol gas oksigen
0.3 mol gas hidrogen
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Apakah isi padu pada keadaan bilik bagi satu sampel gas ammonia, NH3 dengan jisim 5.1 g?
[Isi padu molar gas = 24 dm3 pada keadaan bilik]
7.2 dm3
12 dm3
14.4 dm3
18 dm3
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara berikut, yang manakah merupakan formula kimia yang betul bagi kuprum(II) iodida?
CuI
Cu2I
CuI2
Cu2I2
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1.2 g unsur Y berpadu dengan bromin untuk menghasilkan 6 g sebatian dengan formula empirik YBr2. Apakah jisim atom relatif bagi unsur Y?
[Jisim atom relatif: Br = 80]
20
36
40
56
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berikut ialah satu persamaan kimia:
H2SO4(ak) + 2KOH(ak) → K2SO4(ak) + xH2O(ce)
Apakah nilai x?
1
2
3
4
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