How many atoms are there in 1.3 x 10^22 molecules of n(o)2

1 molucule of NO₂, have 1 atom of N, and 2 atoms of O, therefore, 1 molecule of NO₂ have 3 atoms.

1 molecule of NO₂3 atoms
1.3  * 10²² molecules    x

x=(1.3 * 10²² molecules * 3 atoms) / 1 molecule of NO₂=3.9 * 10²² atoms.

in 1.3 * 10²² molecules of NO₂ there are 3.9 * 10²² atoms.

Ibelieve its a because an empirical formula usually has a ch in it your options are a or b

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