How do you write the formula for potassium hydroxide

How many miles of water are produced if 5.43 mol pbo2 are consumed

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

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?