Draw the curved arrow mechanism for the conversion of aniline into benzenediazonium ion, and draw the final product that forms after the benzenediazonium ion is treated with

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

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?