Which initial substance remained in excess
The reaction 2Al + 3MnO ----> Al2O3 + 3Mn proceeds till the limiting substance is consumed. A mixture of 220g Al and 400g MnO was heated to initiate the reaction. Which initial substance remained in excess and by how much?
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A 75.0 kg patient is running a fever of 105°F and is given an alcohol rub to lower the body temperature. If the specific heat of the human body is approximately 0.830 kcal/kg°C and the heat of vaporization of the alcohol is 203 kcal/kg, de
2.86 g of a mixture of butene C4H8 and butane C4H10 is burned in excess O2 to give 8.8g CO2 and 4.14g of H2O. What are the weight percents of butene and butane in the mixture.
You know that Mg(s) dissolves in dilute HCl but Cu(s) doesnot. What would happen if you dipped the Cu(s) electrode into0.1 M Mg(NO3)2 solution?What would happen if you did the reverse and dipped the Mg(s)electrode into 0.1 M Cu(NO3)2 solut
A container contains oxygen, neon and helium whose partial pressures are 100 torr, 300 torr and 200 torr respectively. What is the mole fraction of neon?
Aniline (C6H5NH2, Kb = 4.3 x 10^-10) is a weak base used in the manufacture of dyes. Calculate the value of Kn for neautralization of aniline by vitamin C (ascorbic acid, C6H8O6, Ka = 8.0 x 10^-5). Does much aniline remain at equilibrium?
An aqueous solution of glycerol C3H8O3 is 48% glycerol by mass. Calculate the molality of the glycerol solution. (*Please show work so I can understand how to work it.)
Determine the molar concentration range of the iron(II)-bathophenanthroline complex that can be analyzed directly with a spectrophotometer, using a 1cm cuvette.
A "miracle" lotion, which is sold under the label of FixitAll, is a mixture containing both zinc oxide (ZnO) and iron oxide (form unspecified). A 1.4882 gram sample of the dried lotion was dissolved in HCl and diluted to a volume of exactly 286.24
A 0.2527-g sample of a mixture of Mg(OH)2 and Al(OH)3 was treated with 50.00 mL of 0.225 mol L?1 HCl(aq). The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl.
2-bromobutane reacts with potassium hydroxide in ethanol at 50degrees Celsius to yield 2-butene, 1-butene, and 2-butanol. How can you change the reaction conditions to make the reaction yield more2-butanol? 2-butene?
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