Answer:
24.9mL of the stock solution are required
Explanation:
To solve this question we have to find, as first, the moles of HCl that we need to prepare the desire solution. These moles are taken from the stock solution as follows:
<em>Moles diluted solution:</em>
500.0mL = 0.5000L * (0.613mol / L) = 0.3065 moles HCl
As these moles comes from the 12.3M HCl solution, the volume that we need of the stock solution is:
<em>Volume stock solution:</em>
0.3065 moles HCl * (1L / 12.3moles) = 0.0249L 12.3M HCl =
<h3>24.9mL of the stock solution are required</h3>
Physical Properties
Sucrose has a monoclinic crystal structure.
When subjected to high temperatures (over 186oC), this compound decomposes, yielding caramel.
Its solubility in water at a temperature of 20oC is 203.9g/100mL.
The standard enthalpy of combustion corresponding to sucrose is 5647 kJ. mol-1.
Answer:
Physical properties of matter are properties that can be measured or observed without matter changing to an entirely different substance.
Additional examples of physical properties include:
odor
boiling point
ability to conduct heat
ability to conduct electricity
ability to dissolve in other substances
Moles of ,
Moles of acetic acid ,
Mole fraction of water :
Therefore, mole fraction of water in this solution is 0.645 .
Hence, this is the required solution.