Answer : The freezing point of a solution is 
Explanation : Given,
Molal-freezing-point-depression constant
= 
Mass of urea (solute) = 29.82 g
Mass of solvent = 500 g = 0.500 kg
Molar mass of urea = 60.06 g/mole
Formula used :

where,
= change in freezing point
= freezing point of solution = ?
= freezing point of solvent = 
i = Van't Hoff factor = 1 (for urea non-electrolyte)
= freezing point constant = 
m = molality
Now put all the given values in this formula, we get


Therefore, the freezing point of a solution is 
They are classified by similar properties and number of valence electrons and energy levels
Answer:
A
Explanation:
A Equations showing which elements are oxidized and which are
13% of total energy ( net energy ) is obtained from renewable sources and about 46% of it comes from hydroelectric power plants.
Start studying Pressure - Volume Relationships in Gases (Boyle's Law). Learn vocabulary, terms ...Select<span> all that apply. V2 = k/P2 V2 = P1V1/P2 ... What </span>two variables<span> are </span>held constant when testing Boyle's Law in a manometer<span>? Temperature hope this helps
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