The one u clicked is the the right one
We assume that the method that made use of urea was able to recover all of the recoverable substance. The method in question is the method that makes use of water.
The total amount of substance is 43 mg/dl. The recovered amount is 25 mg/dl. The percent recovery is
(25 mg/dl / 43 mg/dl) * 100 = 58.14%
I believe the correct answer would be the third option. It is the burette that is the apparatus that is used in titration. It is the best apparatus to use since you can easily control the amount you add to the sample solution. Also, you can easily read off the volume that was added.
When we put Boyle's law<span>, Charles' </span>law<span>, and Gay-Lussac's </span>law<span> together, we come up with the </span>combined gas law<span>, which shows that: Pressure is inversely proportional to volume, or higher volume equals lower pressure. It is expressed as:
</span><span>Pbutane x Voriginal/Troom = Pstandard x Vfinal/Tstandard
It seems that the given values is not complete the pressure of butane is not given and also we cannot calculate for it since there is no more than two data about the water.</span>
Answer: The bigger the atom the lesser the ability of the atom to hold on to its valence electrons. Atomic radius can be looked at as the distance between the nucleus and the outermost energy level.
Explanation: hope this helps :)
