Depend on the geological area
Answer:
5.01%
Explanation:
Density of vinegar = mass/volume
Mass of 10.00 mL = density x volume
= 1.006 x 10 = 10.06 g
From the equation of reaction:
1 mole pf CH3COOH requires 1 mole of NaOH for neutralization.
mole of NaOH = molarity x volume
= 0.5062 x 0.01658
= 0.008392796 mole
0.008392796 mole of NaOH will therefore require 0.008392796 mole of CH3COOH.
mass of CH3COOH = mole x molar mass
= 0.008392796 x 60.052
= 0.504 g
Percentage by mass of acetic acid in the vinegar = 0.504/10.06 x 100%
= 5.01%
The percent by mass of acetic acid in the vinegar is 5.01%
The balanced chemical reaction would be
<span>fecl2 + 2naoh = fe(oh)2(s) + 2nacl
Initial amounts of the reactants are given, so, we need to determine which of the reactants is the limiting reactant and use this amount to determine what is asked. However, what is being asked is how many of the FeCl2 is used in the reaction, showing that it is NaOH that is the limiting reactants. Thus, we just use the initial amount of NaOH and relate the substances by the chemical reaction as follows:
6 mol NaOH ( 1 mol FeCl2 / 2 mol NaOH ) = 3 mol FeCl2
Therefore, 3 moles of FeCl2 is used up and 3 moles of FeCl2 is also left after the reaction.</span>
The statement that best explains the error in Hannah's flowchart is that Sound travels to your ear after sound waves are created.
A flowchart is a diagrammatic structure showing a series of activities that takes place in a complex activity.
From the given question, Hannah creates a flowchart that involves the process or series of steps that leads to hearing the sound energy produced by vocal cords.
- The statement that best explains the error in Hannah's flowchart is that Sound travels to your ear after sound waves are created.
This is because as air moves past the vocal cords, the vocal cords vibrate due to the amplification of vocal resonance by vocal tracts resonators.
This process is followed by creating a recognizable voice in form of sound waves. Now, Sound travels to your ears after the sound waves are created to produce recognizable words.
Learn more about the flowchart here:
brainly.com/question/24735155