Explanation:
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To solve this problem we will apply the concepts of Boiling Point elevation and Freezing Point Depression. The mathematical expression that allows us to find the temperature range in which these phenomena occur is given by
Boiling Point Elevation
Here,
= Constant ( Different for each solvent)
m = Molality
Freezing Point Depression
Here,
Constant ( Different for each solvent)
m = Molality
According to the statement we have that
From the two previous relation we can find the ratio between them, therefore
We already know the change in the freezing point, then
The temperature difference in the boiling point is 100°C (Aqueous solution), therefore
Therefore the boiling point of an aqueous solution is
Basically it is the difference in velocity divided by the time it takes to make that change.
Answer:
35 m
Explanation:
Given :
The distance of the path from the ground to the tree limb = 50 m
The angle between the path of flight of the bird towards the tree limb and the ground = 45 degrees
Therefore we can determine the height above which the bird perched above the ground by using the rules of the trigonometric ratios as;
We know that ,
= 35
Therefore, the bird perched on the tree limb at a height of 35 m.
Answer:
Direct variation suggests that two variables change in the same direction, when one variable decreases the other increases.