Answer:
The percentage of gold(by mass) in the jewelry is 61.52%.
Explanation:
Mass of the jewelry ,M= 9.85 g
Mass of the gold in jewelry =
Mass of the silver in jewelry =
Volume of the jewelry =
Volume of the gold in jewelry =
Density of gold
Volume of the silver in jewelry =
Density of gold
..(1)
..(2)
On solving equation (1)and(2) we get:
and after that values of
The percentage of gold(by mass) in the jewelry:
The percentage of gold(by mass) in the jewelry is 61.52%.