If there are no selections than i would say a thick atmosphere and an unusual large moon.<span />
Answer:
To know if a reaction/experiment is exothermic or endothermic depends on the temperatures of the two liquids you are trying to mix. First before mixing your liquids take the temperature of both of them and write it down. then mix both liquids together to get your reaction and take the temperature of both mixed together. write it down. Did the temperature of your liquids increase or decrease? this question will determine weather the reaction was endothermic or exothermic. Endothermic meaning the temperature got cooler and Exothermic meaning the temperature got hotter/warmer
EX. | starting temperature- 72 F | ending temperature- 82 F | Exothermic
EX 2. | starting temperature- 72 F | ending temperature- 69 F | Endothermic
Explanation: I hope this helped you :)
Atomic radius decrease as electrons are added to a shell because as number of electrons increase number of protons also increase. it increases the interionic force as positive charges increase . thus it pulls the shells towards nucleus of atom leading to decrease in size of atomic radius.
HOPE IT HELPS YOU '_'
I assume C₃H₃O.
Hope I helped! Tell me if I'm wrong!
