NEED HELP ASAP PLS Underline Answer 1. Which metal is the most reactive? How do you know this?

2. Rank the metals in order of increasing reactivity.

3. Give the chemical equations for each single replacement reaction that took place.

4. Was Fe3+ reduced? If so, what metal(s) acted as reducing agents?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?