In which main energy level does the 's' sublevel first appear? K (first main energy level) L (second main energy level) M (third main energy level) N (fourth main energy level)

Did all of the potential energy transfer to kinetic energy?

At standard temperature and pressure, a 0.50 mol sample of H2 gas and a separate 1.0 mol sample of O2 gas have the same (A) average molecular knetic energy (B) average molecular speed (C) volume (D) effusion rate (E) density

How many grams of naoh are needed to make 750 ml of a 2.5 (w/v) solution?

Carbon Dioxide reacts with ammonia NH3 and water producing ammonium bicarbonate (ammonium hydrogen carbonate.) How many kilograms of ammonium bicarbonate, ammonium hydrogen carbonate, are produced if 4575 L of ammonia is reacted at STP?

What is the best description of the energy stored in a stretched or compressed object.

23.9 km + 15 km Calculate this problem and report the answer with the correct number of significant figure

An atom of element A has 108 protons. What would the elements atomic number be?

What is a scientific variable

What kind of reactions are redox reactions a. reactions involving substituting different isotopes b. reactions involving losing and gaining electrons c. reactions involving protons transferring between atoms d.

Determine the number of atoms in 1.75 ml of mercury. (the density of mercury is 13.5 g/ml.)