A sealed plastic water bottle holds 500 g of water. The water is frozen and then allowed to melt during a picnic.
After the water melts, how much water is in the sealed bottle?
A. Less than 500 g
B. 09
C. Exactly 500 g
D. More than 500 g

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action