How much energy does it take to melt 2 kg of ice? (Refer to table of
constants for water.)
1 mol
O A. 2 kg x 1000 g/kg x
x 4.186 kJ/mol = 465 kJ
18.02 g
O B. 2 kg x 1000 g/kg *
1 mol
18.02 g
*(-285.83 kJ)/mol = -31,724 kJ
O C. 2 kg > 1000 g/kg *
1 mol
x 6.03 kJ/mol = 669 kJ
18.02 g
O D. 2 kg x 1000 g/kg x
1 mol
18.02 g
x 40.65 kJ/mol = 4512 kJ
SUBMIT

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

What do you not know about it