A gas at 1.66 atm is expanded from 1.85 L to 3.62 L. What is the new pressure? Using Boyle's Law (P1 x V1) = (P2 x V2)

There are main groups in the modern periodic table of elements

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?

Which polymers are most closely related? a. protein and nucleic acids b. cellulose and starch c. nucleic acids and starch d. nucleic acids and cellulose