Molecular hydrogen, h2, is thought to be the most abundant molecule in interstellar space but is difficult to detect. which easily detected molecule occurs in space along with hydrogen, the measurement of which allows us to estimate the amounts of molecular hydrogen?

Carbon mono-oxide (CO)

Explanation:

Hydrogen exist with various molecules in space which includes carbon mono-oxide, hydroxide, ammonia, carbon(iv)oxide, silicon monoxide and other molecules . They combine in cold regions of space and exist as complex molecules. However hydrogen molecules do not emit radio energy . However CO molecules emit radio energy and hence are used to detect the presence of hydrogen.

sorry i was late, but i don't know what assignment your talking about, i'm in flvs as well, im in earth space science. but u are behind pace bc every class should be in the 3's or 4'

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.