Answer:
Now she multiplies by 0.5556
Explanation:
Concave is not a type of mechanical wave because it doesn’t need a medium for propagation.
You would have to dig up 261 g of sylvanite.
Mass of sylvanite = 73.0 g Au × (100 g sylvanite/28.0 g Au) = <em>261 g</em> sylvanite.