Answer:
Mole fraction of methanol will be closest to 4.
Explanation:
Given, Mass of methanol = 128 g
Molar mass of methanol = 32.04 g/mol
The formula for the calculation of moles is shown below:
Thus,
Given, Mass of water = 108 g
Molar mass of water = 18.0153 g/mol
The formula for the calculation of moles is shown below:
Thus,
So, according to definition of mole fraction:
<u>Mole fraction of methanol will be closest to 4.</u>
The answer is (4) Add enough solvent to 30.0 g of solute to make 1.0 L solution. The molarity is calculated using volume of the solution. When solute dissolving, the total volume will change. So the final volume of solution need to be 1.0 L.
Answer:
Answer is explained below.
Explanation:
As (+) menthol and (-) menthol are enantiomers whose physical properties are same except optical activity so we can expect they have similar Rf values.
Whereas diastereomers have different physical properties and different Rf values.
For example when the (+) menthol , (-) menthol, isomenthol and neomenthol undergo TLC (thin layer chromatography) the
Rf values of.(+menthol) = .447
Rf (+isomenthol) = .395
Rf (+neomenthol)= .487
Rf (-menthol) = .434
The above data shows that (+) menthol and (-) menthol have almost same Rf values and vary a little i.e 0.447 and 0.437. So we can conclude them as enantiomers
Whereas (+) menthol or (+) neomenthol or (+) isomenthol i.e 0.447 , 0.395 and 0.487 have different Rf values. We can conclude them as diasteromers.
(+) menthol and (-) menthol - enantiomers
(+) menthol and (+) neomenthol- diastereomers
(-) menthol and (+) isomenthol - diastereomers
<h3>
Answer:</h3>
a) LiClO4 - Strong electrolyte
b) HClO -Weak electrolyte
c) CH3CH2CH2OH - Non-electrolyte
d) HClO3 - Strong electrolyte
e) CuSO4 -strong electrolyte
f) C12H22O11-Non-electrolyte
<h3>
Explanation:</h3>
- An electrolyte is a substance in an aqueous or molten form which is decomposed by passing an electric current through it. Electrolytes ionize to ions which are responsible for the conduction of electric charge.
- Non-electrolytes are substances that do not ionize into cations and anions and thus do not conduct. They include molecular compounds such as gases.
- Electrolytes may be weak or strong depending on the level of ionization.
- Weak electrolytes are those that undergo partial ionization while strong electrolytes completely ionize.
