
Chap 3: Konsep mol, formula dan persamaan kimia
Authored by Michelle Ting
Chemistry
1st - 4th Grade
25 Questions
Used 8+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah nama bagi sebatian FeBr2?
Ferum brominda
Ferum (II) bromida
Ferum (III) bromida
Ferum bromin
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nombor proton bagi atom R ialah 14 dan jisim atom relatifnya ialah 28.
Penyataan manakah yang betul tentang R?
Jisim bagi 1 atom R ialah 28 g
Jisim molar bagi R ialah 28 g mol-1
14 g R mengandungi 6.02 x 1023 atom
Atom R mempunyai 14 proton, 14 elektron dan 28 neutron
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Persamaan berikut mewakili satu tindak balas.
Cu(OH)2 + 2HNO3 --> Cu(NO3)2 + 2H2O
Apakah bahan-bahan tindak balas dalam persamaan ini?
Kuprum (II) nitrat dan air
Kuprum (II) nitrat dan asid nitrik
Kuprum (II) hidroksida dan asid nitrik
Asid nitrik dan air
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuprum
Argentum
Ferum
Magnesium
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Suatu oksida bagi unsur X mempunyai formula empirik X2O3. 2.24 g unsur X bertindak balas lengkap dengan 0.96 g oksigen.
Berapakah jisim atom relatif bagi X?
[Jisim atom relatif bagi O = 16]
112
56
25
17
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Ammonium sulfat digunakan sebagai baja.
Berapakah peratusan nitrogen mengikut jisim dalam ammonium sufat?
[Jisim atom relatif: H =1; N=14; O =16; S =32]
10.6 %
12.3 %
13.3 %
21.2 %
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
12.5 g zink karbonat dipanaskan semasa satu eksperimen dijalankan. Hasil tindak balas ialah zink oksida dan karbon dioksida.
Hitungkan isipadu gas karbon dioksida yang terbebas pada keadaan bilik.
[Jisim atom relatif: C =12; O =16; Zn =65 ; 1 mol gas menempati 24 dm3 pada keadaan bilik]
2.4 dm3
1.2 dm3
0.6 dm3
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