Which of the following is an example of a chemical name using prefixes? O A. Carbon dioxide
O B. Magnesium sulfate
O C. Iron(ll) carbonate
O D. Potassium chloride

What are transitions between a liquid and gas called? identify which way they are transitioning

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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?