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A 6.74 kg mixed-mineral sample contains chromite (FeCr2O4) as the only chromium-bearing ore. The sample is subjected to an industrial process, using a ferrosilicon alloy as a reducing agent, which quantitatively converts all of the chromium into 13.1 kg of a ferrochrome alloy (stainless steel) which is 13.4% Cr by mass. What is the percentage of chromite (FeCr2O4) in the original sample?
Provide the FULL mechanisms for the reaction of these three alcohols : 1) 1- butanol 2) 2-butanol and 3) 2-methy-2 propanol with a Lucas reagent
Which statement best describes relationships in a modern periodic table? A.) Each transition element is placed in the column of the main group element that it most closely resembles.
A student performs a thermal decomposition experiment using 35.00 g of lithium iodate, LiIO3. The weight of the crucible decreases by 8.95 g after heating. The theoretical mass of oxygen in LiIO3 is 9.24 g. What is the percent error in the student's..
a particular flask has a mass of 17.4916 grams when it is empty. when has mass of the flask is 43.9616 grams filled
if a 50.0 liter container holds 45 moles of a gas at a temperature of 200 C what is the pressure inside the container
In a formal sense, the conversion of a carboxylic acid to an amide corresponds to which of the following. the combining of the fragments which remain after the loss of -OH from the carboxylic acid and -H from ammonia or an amine
the tetraethyl lead pbc2h54in a 25.00 ml sample of aviation gasoline was shaken with 15.00 ml of 0.02381 m i2. hint one
A 0.366-g sample of an unknown reducing agent required 30.0 mL of 0.100 N (normality) KMnO4 for titration. What is the equivalent weight of the reducing agent?
A solution is prepared by mixing 50.0 mL of 0.29 M Pb(NO3)2 with 50.0 mL of 1.9 M KCl. Calculate the concentrations of Pb2+ and Cl at equilibrium. Ksp for PbCl2(s) is 1.6 x10-5.
Question- In the making of isopentyl acetate, from isopentyl alcohol and acetic acid, what was the purpose of washing the organic layer with sodium bicarbonate, sodium chloride, and sodium sulfate?
What weight of A would be removed by four successive extractions with 25-mL portions of ligroin? How much ligroin would be required to remove 98.5% of A in a single extraction?
To this vessel 8.6787g of Ne are added in such a way that no butane escapes. The total pressure of the vessel (at the same temperature) is 1420 torr. Calculate the volume of the vessel and the mass of the butane.
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