Answer:
The van't Hoff factor for sodium chloride in X is 1.9 .
Explanation:
Mass of liquid x = 950 g = 0.950 kg
When 282 g of glycine are dissolved in 950 g of a certain mystery liquid X.
Depression in freezing point of the solution
Molality of the solution = m
The van't Hoff factor for glycine (non ionic) in liquid X= i =1
The value of molal depression constant for liquid X:
..(1)
Now 282. g of sodium chloride are dissolved in the same mass of X.
Depression in freezing point of the NaCl solution
Molality of the NaCl solution = m'
The van't Hoff factor for NaCl(ionic) in liquid X= i'
i = 1.9007 ≈ 1.9
The van't Hoff factor for sodium chloride in X is 1.9 .
Answer:
the answer is O²- hopefully
<span>Glass breaking because this is because only the appearance of the glass changes, but the chemical composition does not.
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Only when heat is transferred from the system to its surroundings does a closed system suffer a decrease in entropy.
Only when heat is transferred from the system to its surroundings does a closed system suffer a decrease in entropy. Every internally reversible operation in a closed system generates entropy. Entropy remains constant in an adiabatic and internally reversible process of a closed system. Isolated systems' entropy cannot diminish.
When a system is not isolated but is in contact with its surroundings, the entropy of the open system may drop, requiring a balancing rise in the entropy of the surroundings. During a process, the entropy of an isolated system constantly increases, or in the case of a reversible process, remains constant (it never decreases).
To learn more about entropy please visit -
brainly.com/question/13146879
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Answer:
their density is only lighter than water because of the air inside. without the air you would sink even if you were holding it firmly.
Explanation: