Scientists should control most possible variables in experiments to get the most valid and correct data. If many variables are included in experiments it is more difficult to interpret what is causing a different outcome.
1.8x10^24 atoms is How many atoms are in 1.50 moles of fluorine gas
35 Celsius minus the average 20 Celsius. going to be 15. let me know if u need anything else.
Answer:
activation energy hope this is right