Calculati cantitatea de substanta ce se contine in 100g: a)SO2 b)H2SO4; c)Cu(NO3)2

When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

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?