How many moles of carbon are needed to react with 5.44moles of so2

When light strikes a plane mirror, images form in locations where light does not actually reach. it only appears to the observer as though the light were coming from this position. what type of image is formed?

Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.