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hoa [83]
3 years ago
5

What does the prefix trans-indicate?​

Chemistry
1 answer:
Mariana [72]3 years ago
3 0

It means to change, and form means shape. So to transform is to change shape.

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The vapor pressure of ethanol is 30°C at 98.5 mmHg and the heat of vaporization is 39.3 kJ/mol. Determine the normal boiling poi
Gelneren [198K]

Answer : The normal boiling point of ethanol will be, 348.67K or 75.67^oC

Explanation :

The Clausius- Clapeyron equation is :

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

where,

P_1 = vapor pressure of ethanol at 30^oC = 98.5 mmHg

P_2 = vapor pressure of ethanol at normal boiling point = 1 atm = 760 mmHg

T_1 = temperature of ethanol = 30^oC=273+30=303K

T_2 = normal boiling point of ethanol = ?

\Delta H_{vap} = heat of vaporization = 39.3 kJ/mole = 39300 J/mole

R = universal constant = 8.314 J/K.mole

Now put all the given values in the above formula, we get:

\ln (\frac{760mmHg}{98.5mmHg})=\frac{39300J/mole}{8.314J/K.mole}\times (\frac{1}{303K}-\frac{1}{T_2})

T_2=348.67K=348.67-273=75.67^oC

Hence, the normal boiling point of ethanol will be, 348.67K or 75.67^oC

3 0
3 years ago
Mass = 25g, Volume = 5mL. What is the density? *
Fantom [35]

Answer:

5ml

Explanation:

m/v

25/5=5

means 25÷5=5

6 0
3 years ago
A covalent bond is best described as ______(A) a bond between two polyatomic ions.(B) a bond between a metal and a nonmetal.(C)
nekit [7.7K]

Answer:

Option C. the sharing of electrons between atoms

Explanation:

Covalent bond is a type of bond in which the reacting element share their valence electrons in order to attain the noble gas configuration.

4 0
3 years ago
Temperature zone occurs between tropical and polar zones
scoundrel [369]
Yes, that's correct. It's the tepid latitude.
6 0
2 years ago
On the periodic table, in which period is copper?
Firdavs [7]

Answer:

At the top of Group 11 above silver and gold.

Period 4

Explanation:

3 0
2 years ago
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