1. If the molar mass of Na2SO4•nH2O is 304.04 g/mol, what is the hydration number 'n'?
A. 8
B. 10
C. 9
D. 7
2. What is the formula for the compound copper (II) sulfate pentahydrate?
3.Hydrates are formed with compounds
A. covalent
B. ionic
C. None of these
D. metallic

The metal is named first

They are all solids.

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy