How many Liters of I2 are produced when 241.6 grams of KI are reacted with excess CuBr2?

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?

  the mississippians were considered to be  horticulturalists, which means they were

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?