chemistry questions?

Question

if you could design a fireworks display, what salts would you use and why?
where do you observe colorful light emissions? what do they have in common?

Answer 1

Do a search on "flame tests"and "line emission spectra".

Answer 2

a million. From an ingredient view of a e book, you will see that there is two factors of the canopy and pages. this suggests that the thickness would desire to be: Thickness = 2 hundred * website length + 2 * cover length = (2 hundred*0.10mm)+(2*0.020mm) = 20.04 mm = 2.004 cm 2. quantity = length * width * top = 10cmx2cmx2xm = 40 cm^3 A 2cmx2cmx2cm block is of quantity 8 cm^3. in case you're taking the finished quantity of the metallic block and divide it with the aid of the quantity of each and every person block, you will desire to locate how many blocks you like: 40 cm^3/8cm^3 = 5 blocks Chemistry questions: - Evaporation is the certainly technique of taking a substance and changing is from liquid section to gasoline section. Boiling is the ingredient the place the tension exerted with the aid of the liquid fits the encircling tension, subsequently inflicting the substance to start evaporating. - the better tension you have, the tighter the air is packed, and the greater the capability of the molecules is contained and conserved. The capability of the molecules, at our point is indicative of warmth. subsequently, the greater tension exists, the warmer the contained product turns into... which permits speedier and much less difficult cooking (considering the fact which you are able to hold onto greater warmth for an prolonged quantity of time).