Propene gas is bubbled through some bromine water . a) Describe the colour change that would occur in the bromine water . b)Write a balanced symbol equation for this reaction . c)What type of chemical reaction is this an example ?​

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 same side of the moon always faces earth because the

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon