What is the percent of N in
NH3?
(H = 1.008 amu, N = 14.01 amu)

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.