(image attached) what type of model is shown?
A) a structural formula
B) a chemical formula
C) a space-filling model
D) a ball-and-stick model

Option (A).

Explanation:

A). Structural formula

    Structural formula of a chemical compound represents a graphic structure of a molecule.

B). Chemical formula

    Chemical formula shows the chemical proportions of the atoms which constitute a molecule of the compound.

C). Space filling model

    Space filling model is a 3-D molecular model in which atoms are represented by the spheres whose radii are proportional to the radii of the atoms and distances between the atoms are proportional to the distances between the atomic nuclei.

D). A ball and stick model

    This model shows the 3-D positions of the atoms and the bonds between them.

    In this model atoms are represented by the spheres and bonds connected by the sticks.

Therefore, model shown is STRUCTURAL FORMULA.

Option (A) is the answer.

answer: h+ its less than oh

explanation:

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.