ILL BRAINLIST U IF U GET THIS RIGHT! N GIVE U 5 STAR One of the isotops of neon, neon-22, has an atomic number of 10 and a mass number of 22. in order, how many protonsz electrons anf neutrons are present in its atom?

a) 12, 10, 22
b) 10, 10, 12
c) 12, 12, 10
d) 10, 12, 22

Can someone me with questions 12 and 13 plz.

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

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?