Stacy made the following table to compare the functions of plant and animal structures, but she is missing a row title. Which of
1 answer:
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Answer:
Titration
Explanation:
The best technique which can be used to determine the number of moles of the HCl in the sample is titration.
The given amount of HCl solution must be titrated with known concentration of the base like NaOH.
The volume of NaOH required must be noted also.
According to the reaction,
At equivalence point
Moles of = Moles of
Considering:-
Moles of
Thus, in this way, moles of HCl can be determined.
Answer:
Approximately .
Explanation:
Look up the density of carbon tetrachloride,
, and glycerol:
- Density of carbon tetrachloride: approximately
.
- Density of glycerol: approximately
.
Let denote the gravitational field strength. (Typically
near the surface of the earth.) For a column of liquid with a height of
, if the density of the liquid is
, the pressure at the bottom of the column would be:
.
The pressure at the bottom of this carbon tetrachloride column would be:
.
Rearrange the equation for
:
.
Apply this equation to calculate the height of the liquid glycerol column:
.