Potassium permanganate is used for purifying drinking water, because
a. it is a sterilising agent
b. it dissolves the impurities of water
c. it is a reducing agent
d. it is an oxidising agent

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.