What volume of Oz is produced at STP when 89.7 g of Alo, decomposes? 1. 2A1,03
2. 4A1 + 302
3. O 19.7L
4. 0 26.01
5. 0 29.6 L
6. O 13.22

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

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?