A car speeds up from 50 mph to 64 mph in 2 hours. Calculate the car's acceleration rate.
Formula for acceleration is Acceleration = Change in velocity
Time

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.

Which compound should undergo substitution of the bromine by phenolate anion? draw the structure of the organic product?