The element chlorine (cl) has two isotopes: chlorine‑35 and chlorine‑37. approximately 75.5% of chlorine atoms have 18 neutrons and 17 protons, and the other 24.5% have 20 neutrons and 17 protons. using the isotopic composition provided, calculate the average atomic mass of chlorine. round your answer to the tenths place.

35.5 amu is the average atomic mass of chlorine

Explanation:

Fractional abundance of chlorine‑35 = 75.5%

Fractional abundance of chlorine‑37 = 24.5%

Average atomic mass is equal to summation of products of all isotopes masses into their fractional abundance.

Average atomic mass =  Σ(Mass of an isotope × fractional abundance)

Average atomic of chlorine :

35.5 amu is the average atomic mass of chlorine

i dont know

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.