stoichiometry

Zirconium is obtained industrially using the kroll process. The Kroll process is a pyrometallurgical process used initialy to produce titanium and later developed to produce zirconium. It is a high temperature process that combines zirconium (IV) chloride with magnesium metal to produce zirconium metal and magnesium chloride via ...continues

theoretical mass?

a)what is the theoretical mass of xenon tetraflouride that form when 130. grams of xenon is reacted with 100. grams of flourine? b) what is the % yeild if only 145 grams of xenon tetrafluoride is actually obtained?

Aqueous Solutions

The only possible ions in an aqueous solution are ion, barium, carbonate, chloride and nitrate. The following are observed: i) the original solution contains only dissolved species. ii) adding silver ion to the solution produces no precipitates. iii) adding sulfate ion to the original solution produces a white precipitate ...continues

Natural Products (Limonene)

Can you please help. There are some of these that I don't get and Others that I am unsure I took the right path. Please see attachment.

I have to show the relation between a common item and chemistry

I have proposed to show the relationship between chemistry and a basketball. My intent is to show the composition of basketballs from different time periods. My answer must be presented as a 10 minute class presentation. Help!!!

Empirical and molecular formulae of ethylene

1. Ethylene glycol is used as automobile antifreeze. 6.38g og this compound contains 2.47g of carbon and 0.620g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole. What are the empirical and molecular formulas of ethylene glycol? (observe significant digits)

STP and volume

1. The respiratory rate of a person is 20 breathes per minute. If every average breath is about 310cm^3 of air at 22C and 740mmHG, what volume of air in cubic meters and corrected to standard temperature and pressure conditions does a person breathe in one day?

Wavelength

The silver iodine bond energy is approx 255kJ/mol. (AgI is one of the active components in photograpgy sunglasses.) What is the longest wavelength of light capable of breaking the bond in silver iodine?

theoretical yield

What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction. V2O5(s) + 5Ca(l) --> 2V(l) + 5CaO(s)

Reaction

Chlorine gas can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid: MnO2(s) + 4HCl(aq) --> MnCl2(aq) + 2H2O(l) + Cl2(g) How much MnO2 should be added to excess HCl to obtain 275mL of chlorine gas at 5.0C and 650 mmHg?