Coefficient of "1" is understood. choose option "blank" for the correct answer if the coefficient is "1." bcl3; + h2o → h3bo3 + hcl

The balanced equation is:

BCl3 + 3H2O → H3BO3 + 3HCl

The coefficients are : 1, 3, 1, 3

Explanation:

The equation for the reaction is given below :

BCl3 + H2O → H3BO3 + HCl

The above equation can be balanced as follow:

There are 3 atoms of Cl on the left side and 1 atom on the right. It can be balance by putting 3 in front of HCl as shown below:

BCl3 + H2O → H3BO3 + 3HCl

There are a total of 6 atoms of H on the right side and 2 atoms on the left. It can be balance by putting 3 in front of H2O as shown below:

BCl3 + 3H2O → H3BO3 + 3HCl

Now we can see clearly that the equation is balanced as the atoms of the different elements present on both sides of the equation are equal.

The coefficients are : 1, 3, 1, 3

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.