Answer:
The freezing point of the solution is 78.71 °C
Explanation:
Step 1: Data given
Freezing point for the pure solvent is 79.4 °C.
Molality = 0.1 molal
Freezing point depression = 6.9 °C/m
Step 2: Calculate freezing point of the solution
ΔT = i*Kb*m
⇒ with i = the van't Hoff factor: naphthalene = a non-electrolyte, which means that the van't Hoff factor for this solution will be 1
⇒ with Kb = the freezing point depression constant = 6.9 °C/m
⇒ m = the molality = 0.1 molal
ΔT = 1 * 6.9 * 0.1
ΔT = 0.69
Freezing point of the solution = 79.4 °C - 0.69 = 78.71 °C
The freezing point of the solution is 78.71 °C
Answer:
17.57kg of and its percentage yield is 81.0%
Explanation:
Through the reaction you can get the theoretical amount of that must be produced.
If the amount obtained is less than the theoretical amount, it means that the initial sample was not 100% pure. Now the actual amount obtained is compared with the theoretical amount using a percentage
=81.0%
Rutherford’s, Bohr’s, and the quantum models say that electrons behave as particles, electron is negatively charged and electrons behave both particles and wave respectively.
<h3>What Rutherford’s, Bohr’s, and the quantum models say about electron?</h3>
Bohr model states that electrons behave as particles, Rutherford's model proposed that the negatively charged electrons surround the nucleus of an atom whereas quantum model explains that the electron has both particle and wave behavior.
So we can conclude that Rutherford’s, Bohr’s, and the quantum models say that electrons behave as particles, electron is negatively charged and electrons behave both particles and wave respectively.
Learn more about electron here: brainly.com/question/860094
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Initial Conditions:
Volume= v1= 417 cm³
Temperature= T1 = 278 K
Final Conditions:
Temperature= T2 = 231K
Volume = v2 =?
Use the general gas equation;
P1*v1/T1 = P2*v2/T2
As, the temperature is constant;
So,
v1/T1 = v2/T2
417/278 = v2/231
v2= 346.5 cm³
Answer:
Option C. $1.79
Explanation:
From the question, were told that the total cost of 8 protein bar is $14.32.
Therefore, the cost of 1 protein bar will be = $14.32/8 = $1.79