6.9
7.1
6.2
6.8
Correct answer is A
R.A.M = m\(_1 \alpha_1\) + m\(_2 \alpha_2\)
= 7(90/100) + 6(10/100)
= 6.3 + 0.6
= 6.9
Which of the following questions is correct about the periodic table?
The non-metallic properties of the elements tend to decrease across each period
The valence electrons of the elements increase progressively across the period
Elements in the same group have the same numbeer of electron shells
Elements in the same period have the number of valence electrons
Correct answer is B
No explanation has been provided for this answer.
From the diagram above, an ideal can be represented by
M
N
K
L
Correct answer is B
No explanation has been provided for this answer.
Which of the following properties is NOT peculiar to matter?
kinetic energy of particles increase from solid to gas
Random motion of particles increases from liquid to gas
Orderliness of particles increases from gas to liquid
Random motion of particles increases from gas to solid
Correct answer is D
No explanation has been provided for this answer.
0.40 mol dm-3
0.50 mol dm-3
0.05 mol dm-3
0.30 mol dm-3
Correct answer is B
No explanation has been provided for this answer.
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