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alexira [117]
4 years ago
7

Which of the following is a homogeneous mixture?

Chemistry
2 answers:
nexus9112 [7]4 years ago
4 0
The answer is soil, the stem homo- means same.
inn [45]4 years ago
4 0

Answer: the answer is salt water.

Explanation: homogenerous means you can't see the different substances of the mixture, they appear to be one substance.

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The vapor pressure of ethanol is 400 mmhg at 63.5°c. its molar heat of vaporization is 39.3 kj/mol. what is vapor pressure of et
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Answer:- The pressure of ethanol would be 109 mmHg.

Solution:- This problem is based on Clausius clapeyron equation--

ln(\frac{P_1}{P_2})=(\frac{\Delta Hvap}{R})(\frac{1}{T_2}-\frac{1}{T_1})

Given, T_1 = 63.5 + 273 = 336.5 K

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Let's plug in the values in the equation and do the calculations.

ln(\frac{400}{P_2})=(\frac{39300}{8.314})(\frac{1}{307.9}-\frac{1}{336.5})

ln(\frac{400}{P_2}) = 1.30

On taking anti ln to both sides...

\frac{400}{P_2} = e^1^.^3^0

\frac{400}{P_2} = 3.67

P_2 = 400/3.67

P_2 = 109 mmHg

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