Calculate the time it takes for a reactant to reach 1% of its initial
mole content in a constant volume batch reactor if ra = -kca, k = 0.23 min-1.
plot the concentration profile, ca(t).
b) what assumptions were made in the application of the general mole balance equation for
the case of (a) the batch reactor, (b) cstr and (c) pfr?

D)can be increased in a closed system

D.na is the answer hope this

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