Pls help i’m boutta fail science
Which of the following chemical equations is unbalanced?
A) N2 + 2H2 -> 2NH3
B) 2H2 + O2 -> 2H2O
C) P4 + 5O2 -> P4O10
D) 4Na + O2 -> 2Na2O
help is very much appreciated

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.