7.62 x 10^23 molecules of CO2 are contained in a tire. How large is the tire (in liters)?

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)

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

What type of reaction is zn + cucl2 → cu + zncl2?