Hello, this will be your first tasks in physics:

1. What weighs most: 1,00^1 kilogram of fresh water with high opacity or 2 times 500 gram crystalized dihydroxid from Europe, Italy, Toscana?

2. A coin is made of 90% Au and 10% Cu (weight in pr. cent)

The mass of the coin is 14,16 gram – what is the density of the coin?

Good luck! �