True. Each contour line on a topographic map represent a certain elevation; the closer they are, the steeper the surface is. All points on a contour line are the same elevation.
Al 1s²2s²2p⁶3s²3p¹ - 3e⁻ → Al³⁺ 1s²2s²2p⁶
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Answer : The number of plates and plate height is, plates and respectively.
Explanation : Given,
Retention time = 407 s
Width of a base = 13.0 s
Length = 12.2 m
First we have to calculate the number of plates.
Formula used :
where,
N = number of plates
= retention time
w = width of a base
Now put all the given values in the above formula, we get:
plates
Now we have to calculate the plate height.
Formula used :
where,
H = height of plate
L = length
N = number of plates
Now put all the given values in the above formula, we get:
Thus, the number of plates and plate height is, plates and respectively.