Not sure how to write this question so I will add an image
2 answers:
Explanation:
1) When phosphoric acid reacts with calcium hydroxide neutralization reaction takes place in which calcium phosphate is formed along with formation of water.
The balanced chemical equation is give as:
2) When calcium oxide acid reacts with phosphorus pentoxide addition reaction takes place in which calcium phosphate is formed.
The balanced chemical equation is give as:
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Answer:- Density is 10.5 grams per mL and the substance is Silver(Ag).
Solution:- Mass of jewelry is given as 132.6 g. Initial volume of water in the graduated cylinder is 48.6 mL and the volume becomes 61.2 mL when this jewelry is submerged in the cylinder.
So, the volume of the jewelry = 61.2 mL - 48.6mL = 12.6 mL
We know that,
Let's plug in the values in the above formula to calculate the density:
So, the density of the jewelry is .
The substance from which the jewelry is made could easily be identified by comparing the calculated density with the density values given for different substances in the density table.
Looking at the density table, 10.5 grams per mL is the density for silver. So, the jewelry is made up from Silver.