Which of these reactions is a combustion reaction? a. burning wood b. decomposition of water c. production of food by plants with the of the sun's energy d. rotting of fruits and vegetables

How much would the freezing point of water decrease if 4 mol of nacl were added to 1 kg of water (kf=1.86 degrees c/(mol/kg) for water and i=2 for nacl a- 7.44 degrees c b- 14.88 c 3.72 d 1.86