What happens in destructive distillation of coal when lime water is used instead of water??? Please tell me

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *