Archie wanted to find out if Jughead's crown was made of pure gold (Betty and Veronica were able to remove the crown while he was sleeping and brought it to Archie.) First, he measured its mass: 432.0g. Next he measured its mass when the crown was underwater: 352 g. What is the volume of the crown?

Which fact represents evidence for the big bang theory?

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

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