What do scientists use molecular clocks to estimate?

a. the age of fossilized remains found in an archeological dig.

b how long it will take for a molecule to break down into individual atoms

c how long ago various groups of organisms diverged evolutionarily from one another

d the rate at which a chemical reaction will occur at a given temperature and pressure

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

Iknow #2 is d. i just need to know why

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)