#CHEMISTRY #F4
Atom X terdiri daripada 12 proton , 12 neutron dan 12 elektron . Tentukan susunan elektron bagi atom X .
Atom X terdiri daripada 12 proton , 12 neutron dan 12 elektron . Tentukan susunan elektron bagi atom X .
Anonymous Quiz
56%
2.8.2
20%
2.8.8
13%
2.8.4
11%
#CHEMISTRY #F4
Seorang saintis ingin memusnahkan mikroorganisma yang merosakkan buah strawberi dengan menggunakan radioisotop
Antara isotop berikut , yang manakah paling sesuai digunakan ?
Seorang saintis ingin memusnahkan mikroorganisma yang merosakkan buah strawberi dengan menggunakan radioisotop
Antara isotop berikut , yang manakah paling sesuai digunakan ?
Anonymous Quiz
20%
Kripton-85
41%
Kobalt-60
22%
Nitrogen-15
16%
Iodin-131
✨NOTES FOR TODAY #CHEMISTRY ✨
TINDAK BALAS EKSOTERMIK ;
→ Membebaskan tenaga haba
→ Tenaga bahan bahan tindak balas > hasil hasil tindak balas
TINDAK BALAS ENDOTERMIK ;
→ Menyerap tenaga haba
→ Tenaga bahan bahan tindak balas < hasil hasil tindak balas
TINDAK BALAS EKSOTERMIK ;
→ Membebaskan tenaga haba
→ Tenaga bahan bahan tindak balas > hasil hasil tindak balas
TINDAK BALAS ENDOTERMIK ;
→ Menyerap tenaga haba
→ Tenaga bahan bahan tindak balas < hasil hasil tindak balas
✨NOTES FOR TODAY #CHEMISTRY ✨
Atoms are very small and light. The mass of an atom is impossible to weigh with any tool.
Atoms are very small and light. The mass of an atom is impossible to weigh with any tool.
Anonymous Quiz
28%
31
40%
33
25%
41
8%
21
Anonymous Quiz
24%
26.22
46%
26.88
24%
26.99
6%
26.66
#CHEMISTRY #F4
How many moles if nitrogen are present in 600 cm³ of gas measured at room condition? (mol)
How many moles if nitrogen are present in 600 cm³ of gas measured at room condition? (mol)
Anonymous Quiz
19%
0.024
35%
0.0225
32%
0.025
14%
0.0024
#CHEMISTRY #F4
0.32g of metal X is combined with 0.36g of non-metal Y. What is the empirical formula for this compound?
(RAM: X=64; Y=35.5)
0.32g of metal X is combined with 0.36g of non-metal Y. What is the empirical formula for this compound?
(RAM: X=64; Y=35.5)
Anonymous Quiz
34%
XY2
35%
XY
26%
XY3
5%
Xy
Anonymous Quiz
71%
Ca
13%
C
5%
Co
11%
Cl
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Anonymous Quiz
38%
AgBr2
38%
AgBr
22%
Agbr3
2%
Agbr
Anonymous Quiz
15%
HCL3
37%
HCL
28%
HCl
20%
HCl2
Anonymous Quiz
7%
PBO
51%
PbO(II)
32%
PbO
10%
PBO(II)
Anonymous Quiz
27%
CoM
32%
CO
33%
CO(II)
8%
CO(I)