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Titanium occurs in the magnetic mineral ilmenite (FeTiO3), which is often found mixed up with sand. The ilmenite can be separated from the sand with magnets. The titanium can then be extracted from the ilmenite by the following set of reactions:
FeTiO3(s)+ 3 Cl2 (g)+ 3 C(s) >>>> 3CO(g) + FeCl2 (s) + TiCl4 (g) + 2 Mg(s) >>>>> 2 MgCl2(l) + Ti(s)
Suppose that an ilmenite-sand mixture contains 23.2 % ilmenite by mass and that the first reaction is carried out with a 91.1 % yield.
If the second reaction is carried out with an 85.4 % yield, what mass of titanium can be obtained from 1.40 kg of the ilmenite-sand mixture?
Li is in row 2 of the periodic table, Na is in row 3, and K is in row 4. How do their row numbers affect how their electron configurations end.
Classify the following compounds and ions as strong acid, weak acid, strong base, weak base, or neutral. For each write the reaction(s) that justify your decision. If a substance is amphiprotic, show both reactions.
What is the net redox reaction that occurs when Ag comes into contact with acidic K2Cr2O7? Which metal is the most reactive?
A piston has an external pressure of 11.0 atm . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.620 liters.
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate.
If the volume of ocean water 5.4*10^20) contains 4.1 percent sodium chloride ("salt") by mass and the density of the water is 1.86 g/mL, calculate the total mass of sodium chloride.
The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air
when a 50.0-g nugget of pure gold is heated from 35.0 C to 50.o C, it absorbed 5200.0J of energy. find the specific heat of gold.
If there was 0.5011g of KClO3 in the original mixture, what is the true percent of KClO3?
Calculate the pH of a solution prepared by mixing 20mL of .20M NH3 with 40mL of .10M HNO3 (Kb for NH3= 1.8 x 10^-5)
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases
The acid-catalyzed addition of alcohols to alkenes occurs via a mechanism analogous to acid-catalyzed alkene hydration. The reaction occurs in 3 steps
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