A student accidentally left a bottle of ammonia unclosed in the corner of a laboratory. After a few minutes the entire laboratory smelled of ammonia. Which process has occurred? Diffusion
Distillation
Evaporation
Brownian motion

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.

What is dhmo? hint: you find it everywhere something is wet..