Q. The bond dissociation energies of X, Y, and XY are in the ratio of 1: 0.5 : 1. ∆H for the formation of XY is -200 kJ mol-1. The bond dissociation energy of X, will be. (1) 200 kJ mol-1
(2) 100 kJ mol-1
(3) 400 kJ mol-1
(4) 800 kJ mol-1

Sound is a disturbance that travels through a medium as a

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

What can change the speed of sound as it travels through the ocean? a. salinity only b. density and salinity c. salinity and distance from land d. density and distance from land