19. some redox reactions are also classified as which of the following?
(points : 3)
acid-base

synthesis

single-displacement

decomposition

question 20. 20. if ions change places and a gas is formed, then what type of reaction is indicated?
(points : 3)
double-displacement

synthesis

decomposition

single-displacement

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?

Find the mass, in grams, of 5.00*10^23 molecules of f2

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line