Which of these chemical equations is correctly balanced?

a. mno4 + 2 c2h2o4 mn + 2 co2 + 4 h2o

b. mno4 + 3 c2h2o4 mn + 6 co2 + 4 h2o

c. mno4 + 4 c2h2o4 mn + 8 co2 + 4 h2o

d. mno4 + 6 c2h2o4 mn + 12 co2 + 12 h2o?

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground, its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy