An unknown salt was dissolved in 1.97g of water. The temperature of the water decreased from 24.8C to 21.4C when 8mol were dissolved. What is the heat of solution in kJ/mol?

law of conservation of matter

the answer is 303.15 or 303

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )