Touching a hot iron: conduction, radiation, or convection?

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

What is a number added in front of a formula in order to balance the equation

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely