1. Calculate the pH expected when 10 mL of 0.10 M NaOH is added to 20 mL of water (hint: dilution).

c is the answer because when something is left after something evaporates that shows the chemical change.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

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 : )

the answer is c.the valence of the atoms combine .