One mole of an ideal gas is held at standard conditions. at what kelvin temperature would the pressure be doubled?

The volume should be kept in constant condition.
Then we go 
and if P2 is equal to 2P1, we have 
which means that needed temperature is half of the initial temperature

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