Which equation correctly relates the radiant energy (E) of a quantum of light, the frequency of the radiation (f), and Planck's constant (h)? * A. E = hf
B. E = h/f
C. E = h/f^2
D. E = hf^2

Which term refers to a property that depends only on the amount of a substance? ©@

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.