Easy chemistry I'm terrible at chemistry x﹏x Tetraphosphorous hexaoxide is formed by the reaction of phosphorous (P4) with oxygen gas. If the reaction of 54.6 g of P4 with 28.6 g of O2 produces 21.0 g of P4O6, calculate the percent yield for the reaction.

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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?