Which electron configuration represents the electrons of an atom in an excited state?

(1) 2-8-1 (3) 2-8-17-6 (2) 2-8-6 (4) 2-8-18-5

What is the value for º for the following reaction, given the standard entropy values? Al2O3 (s) + 3H2 (g) → 2Al (s) + 3H2O (g) -35 J/mol·K +35 J/mol·/K +179 J/mol·K -179 J/mol·K

When a single celled organism copies its own DNA and splits into two new daughter organisms it is called binary fission external reproduction fragmentation regeneration

What is a neutron and what charge does it have

What is gravitational energy

What CaSO₄.1/2 H₂O is alo know as Plaster of Paris?

How to calculate average concentration

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

How are amounts of hydrogen and oxygen gas made from the electrolytic decomposition of water related to the chemical formula of water?

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction: 2H2O2 (l) → 2H2O (l) + O2 (g) ΔH = - 196 kJ Calculate the value of q (kJ) in this exothermic reaction when 3.

What is the concentration of hydronium in each of the following cases: [OH-] = 10-12 M? [OH-] = 10-2 M?