Acompound was analyzed and found to have the following percent of composition: nitrogen 11.64% and chlorine 88.36 %. determine the empirical formula for the compound ( in order to solve this problem consider the percentages as if they were masses of the respective elements and follow the process to find the empirical formula for the compound).

Which position represents spring in the southern hemisphere? a) b) c) d)

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

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?