The pretend element, knoxium, Kx, has the following composition: 164Kx, 164.08 amu (60.44%)
165Kx, 165.11 amu (13.55%)
169Kx, 168.92 amu (%)
What is the average atomic mass of the "knoxium"?

164.08amu
165.48amu
166.04 amu

165.48 amu

Explanation:

First, you need to find the last percentage.

100% = 60.44% + 13.55% + x

100% = 73.99% + x

x = 26.01%

Now, multiply each mass by the respective percentage.

164.08 × 0.6044 = 99.17

165.11 × 0.1355 = 22.37

168.92 × 0.2601 = 43.94

Lastly, add the products together to find the average atomic mass.

99.17 + 22.37 + 43.94 = 165.48

The average atomic mass of "knoxium" is 165.48 amu

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .