(need 12) project due monday! what are things we use in everyday life that contain minerals ( list the minerals) < 3

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

What is the chemical name of the compound ti2o3?

What is the percent by mass of sodium in na2so4?