Uestion 1(multiple choice worth 5 points) (08.01 mc) which of the following describes a characteristic of water that makes it cohesive in nature? it has a partial negative charge on hydrogen and a partial positive charge on oxygen. it has a linear molecular structure with h-o-h arranged in a straight line. it has a vast electronegativity difference between its constituent atoms. it requires a high amount of heat to raise or drop its temperature.

It has a vast electronegativity difference between its constituent atoms.  

Explanation:

This makes the O-H bond so polar that it can form strong hydrogen bonds (cohesive forces) with its neighbours.

A is wrong. The charge on H is δ⁺ and the charge on O is δ⁻.

B is wrong. A water molecule has a bent shape.  If it were linear, water would be nonpolar.

D is wrong. It is a statement of a physical property of water. It does not explain the cohesive forces in water.

C - It has a vast electronegativity difference between its constituent atoms.

Explanation:

може ли да зареждате повече информация, моля

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole