A scientist has a 98,3 g sample of silicon, How many silicon atoms are in the sample? A.1.72 x 1023 atoms
B. 2.11 1024 atoms
c. 1.69 x 1025 atoms
D.6.92 x 1025 atoms

Ido not understand. 

12 is probably the typical age for a first kiss but i think its to young.

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

True is ur answer : )