Avery flexible helium-filled balloon is released from the ground into the air at 20. ∘c. the initial volume of the balloon is 5.00 l, and the pressure is 760. mmhg. the balloon ascends to an altitude of 20 km, where the pressure is 76.0 mmhg and the temperature is −50. ∘c. what is the new volume, v2, of the balloon in liters, assuming it doesn't break or leak?

38.05 L

Explanation:

To solve this problem use the formula:

                   V1P1T2 = V2P2T1 V2 = V1P1T2/P1T1

where

V1: 5.00 L

P1: 760 mmHg

T1: 20 +273 : 293K  (remember to convert ºC to K)

V2: ?

P2: 76 mmHg

T2: -50 + 273 : 223 K

V2= 5.00L * 760 mmHg * 223 K /( 76 mmHg *293 )

V2 38.05 L

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.