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IS aluminium prepared in thin metal leaves, with a thickness less than 0.2 millimetres (8 mils), thinner gauges down to 6 micrometre (0.2 mils) are also commonly used.
Pure iron, Fe, can be produced from an ore called hermatite, Fe2O3, by reaction with carbon at high temperatures. 2Fe2O3+3C ---> 4Fe+3CO2. If an iron company needs to make 25 tons of iron, how many tons of hematite much react
the heat of fusion of water is 6.008x103 jmol at its normal melting point of 272.15k. calculate the freezing point
if you add .454g of nitroglycerine to 100g of benzene at 25C, the vapor pressure of the solution is 94.85mmHg. Calculate the molar mass of nitroglycerine.
A 25.00mL portion of this solution required 17.56mL of hydrochloric acid(0.1396 mol/L) for complete neutralization. Calculate the percent of sodium carbonate in the mixture.
Calculate the de Broglie wavelength of an electron of an electron accelerated through a potential difference of (a) 100V and (b) 100kV.
Explain why does the wavelength of light emitted by CdSe nano particles shift from red to green as particle size is reduced. Explain what is this phenomena called.
A 0.01M solution of acid HAS, has a ka=1.6 x 10-10 and a concentration of NaAS of 1.29 x 10-3 molar; (a) what is the pH of this solution and (b) what is the pkb of the conjugate base of HAS
How many grams of amonnia are needed to react with 50.0 grams of potassium tetrachloroplatinate then calculate how many grams of cisplatin are formed from 50.0gm of potassium tetrachloroplatinate, if percent yield for the reaction is 75%.
What is the boiling point of a solution made by adding 6.79 g of magnesium chloride to 242.0 g of water?
Diagram the formation of an ether. Name the type of reaction and the ether you created.
Explain what mass in grams of carbon dioxide can be produced from the reaction of 16.65 g of propane with 52.66 g of oxygen? C3H8 (g) + 5 O2 (g) 3CO2 (g) + 4H2O (g)
while heating two different samples of water at sea level one boils at 102 c and one boils at 99.2 c. Calculate the percent error for each sample from the theoretical 100.0 c
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