How many molecules of Cl2 are contained in a 181-gram sample? A. 1.54x10^24
B. 7.73 x 10^27
C. 1.09 x 10^26
D. None of these

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles

Element before carbon on the periodic table

What is the thermodynamic driving force for dissolving a solid in a liquid if it is an endothermic process (which reduces the entropy of the surroundings)? 1. the combustion of propane. 2. the increase of the entropy of the system. 3. increased temperature of the system and surroundings. 4. the decrease of the entropy of the system. 5. the increase or decrease of the entropy of the system?