I need to make a guy jelous so i need a fake boy. friend whos up for the job!/!?!?!?!?!?!?! NOT FOR MONEY SORRY

Which term best describes the form sound takes as it travels away from a drum (a- gas)(b-music) ( c-waves) (d-particles

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.