Which model represents an element? O A. OB. O c. O D.
1 answer:
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Explanation:
It is known that the relation between pH and is as follows.
pH =
and,
Hence, first we will calculate the value of as follows.
=
= 4.75
Now, we will calculate the value of pH as follows.
pH =
=
= 4.75 + (-0.677)
= 4.07
Therefore, we can conclude that the pH of given solution is 4.07.
Since the beaker was heated we can asume that only magnesium cloride is left in the beaker, therfore the difference between the beaker with magnesium chloride and the empty beaker give the mass of magnisium chloride: