a sample of mercury changes phase from solid to liquid.

using the symbol for mercury (hg), which option correctly shows this phase change?

hg (g) → hg (s)

hg (l) → hg (s)

hg (s) → hg (g)

hg (s) → hg (l) i really really really need asap

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

The boiling point of liquids is very high what does it indicate

What happens when the temperature of a solution increases?