Answer:
(a) 0.575 m;
(b) 0.527 m
Explanation:
Let's use the freezing point depression law in each of these cases.
(a) According to the law:
Rearrange the equation for molality, b:
NaCl is an ionic substance, 1 mole of it dissociates into 2 moles of ions, sodium ion and chloride ion, this means the van 't Hoff factor i = 2.
Here:
is the initial freezing point of water,
is the final freezing point of water.
For water:
Applying the equation
(b) Applying the same equation for the same salt and the same conditions, except a new freezing point, we would expect to obtain:
The answer is: 87
i have to type other letters so blah blah blah... i hope this helps you:)
Phototropism is one plant tropisms or plant movements as a reaction to an external stimuli for this case light. There are two types of phototropism namely the positive and negative. Negative phototropism is exhibited by plants that grows away from the light. Examples are Monstera, Philodendron and other tropical vines.