Which energy transformation occurs when an
electrolytic cell is in operation?
(1) chemical energy → electrical energy
(2) electrical energy → chemical energy
(3) light energy → heat energy
(4) light energy → chemical energy

An object of mass 10.0 kg and volume 1000 ml and density 10 g/ml sinks in water who’s density is 1.0 g/ml. what is the mass of the water which has been displaced in kilograms

Agust of wind blowing east pushes against a ball. when will the wind do work on the ball? when the ball moves to the east when the ball moves to the north when the ball stays in one place when the ball moves north or south

Two moles of potassium chloride and three moles of oxygen are produced from the decomposition of two moles of potassium chlorate, kcos3(s). write the balanced equation. how many moles of oxygen are produced from 12 moles of potassium chlorate