Consider the chemical reaction: 2H2O(l)→2H2(g)+O2(g)
How many moles of H2O are required to form 1.5 L of O2 at a temperature of 326 K and a pressure of 0.992 atm ?

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

cutt.ly/XzW3SUN

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above