The following reaction shows the products when sulfuric acid and aluminum hydroxide react. 2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H20
The table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory.
Initial Mass and Yield
Sulfuric Acid Aluminum Hydroxide
Initial Amount of Reactant
40 g
15 g
Theoretical Yield of Water from Reactant
14.699
10.38 g
What is the approximate amount of the leftover reactant?
11.73 g of sulfuric acid
o o
10.33 g of sulfuric acid
11.12 g of aluminum hydroxide
13.67 g of aluminum hydroxide

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it means there are 3 atoms of oxygen

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.