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Fireworks Combined
Fireworks Show - Art in the Sky
A fireworks show is an excellent opportunity to appreciate pyrotechnics in all their glory. Fireworks come in a huge variety of shapes, colours, and designs, and can be used both by individuals and by professionals to create beautiful displays. There are public shows for holidays and events, as well as private shows that anyone can do. Here, we'll take a look at some of the different types of fireworks that are used, as well as how you can put on your own fireworks display at home.
Commercial fireworks are generally only used by professionals, and in most cases it is not legal (or financially feasible) for an individual to purchase them. There are several different grades of fireworks for most countries, and there are regulations to keep just anyone from owning and firing pyrotechnics that are powerful enough. However, there are plenty of fireworks that are legal almost everywhere, and these can be used to create a fireworks show in your own back yard. For example, roman candles, firecrackers, bottle rockets, and other smaller types of fireworks are available for anyone to purchase, and can be combined to create a modest show. They can be used to celebrate holidays or special occasions, or just for fun.
Commercial grade fireworks are also produced by companies to create a larger fireworks show, typically during public celebrations and holidays. These fall into a number of different styles. For example, most shells will produce a spherical scattering of stars (the points of light you see) either with or without tails trailing after them. They can go straight out or droop and fall creating an effect similar to a weeping willow. Some do not ignite until they are about to fall, creating an effect similar to a waterfall. There are also fireworks that are designed to split into smaller stars after detonating, creating a crossing pattern, or to spit out sparks as they rise and split. The number of different types of fireworks is staggering, as they are used all over the world for many types of celebrations.
Depending on the particular laws in your area, a good fireworks show may or may not be easy to do on your own. Knowing the regulations and following them is always a good idea, but if you are legally allowed to perform with fireworks then they can certainly be a lot of fun and beautiful to see.
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Chemistry Homework Help Please! Will give 10 points!?
The incandescent white of a fireworks display is caused by the reaction of phosphorus with O2 to give P4 O10.
a) Write the balanced chemical equation for the reaction.
Ans: i figured out its 4P + 5O2 ---> P4 O10
b) How many grams of O2 are needed to combine with 6.85g of P (phosphorus)?
I can't figure this one out and would really appreciate your help.
Calculate moles of P
moles P = 6.85g / 30.97g/mol
moles P = 0.222moles P
Calculate moles of O2
moles O2 = moles P * 5mol O2 / 4mol P
= .0222mol P * 5mol O2 / 4 mol P
moles O2 = 0.278mol O2
Calculate the mass of O2
mass O2 = 0.278mol O2 * 32.0g/mol
mass O2 = 8.90g O2
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