Sam heated 4.00 g mercury (II) oxide (molar mass of HgO is 216.59 g/mol) to form mercury (molar mass of Hg is 200.59 g/mol) and oxygen (mola rmass of O2 is 32.00 g/mol). He collected 0.280 g oxygen. The balanced equation is shown below. 2HgO-> 2Hg + O2
What was the percent yield of oxygen
percent yield=actual yield/theoretical yield x 100%

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.