What is the density of a gas at STP that has a molar mass of 50.0 g/mol? Student A wrote some preliminary notes: PV = nRT; n = m/M; and d = m/V

known: unknown

T = 273 K d = g/cm3

P = 1 atm

R = 0.08125 atm

M = 50.0 g/mol

n = 1 mol

If PV = nRT and n = m/M, then, density = PM/RT

What is the density of the gas?

It is important to wear proper protective equipment in lab even when not actively performing experiments because accidents can affect any researcher, even one not working on an experiment. select the best answer from the choices provided

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?

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