Which statement correctly explains why a fuel cell is a voltaic cell? it is composed of one oxidation half-reaction. it is composed of one reduction half-reaction. it transfers electrons from oxidation reactions to reduction. it requires either an anode or a cathode but not both. hurry up plzz! thx for ! for 50 points as well!

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

What energy is it when you flip on a switch on a lamp