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Suppose that the reaction is carried out at 300C and 3.00 atm. 1.00 grams of iron (III) nitride reacts. What volume of molecular hydrogen is required?
Why does the dehydration of beta-hydroxy ketone occur so readily to produce the alkene compared with all the unsuccessful effort to dehydrate an alcohol under basic conditions?
If the average molar mass of uranium in a reactor is 236.62, what percent of the fuel consists of the lighter isotope?
Many people think salt is added to water to increase the boiling poing so pasta will cook faster. How much salt would be needed to be added to 4L of water to raise the boiling point by 5 degrees
Assuming an ideal solution, what is the predicted freezing point of a 0.01 m (molality) aqueous solution of NaHPO4? Kf of water = 1.86 deg C/m.
Estimate the mass of water that must evaporate from the skin to cool a body by 0.30, if the mass of the body is 94 and its heat capacity is 4.0 .
Solid ammonium carbarnate dissociates as indicated. If at equilibrium PNH3 = .035atm, what is PCO2? In another experiment it is observed that PCO2 = .025atm, what is PNH3?
What mass of silver nitrate must be placed into a 500 mL volumetric flask, dissolved, and diluted to the mark with water?
A solid mixture of KCl, KNO3, and Ba(NO3)2 is 20.92 mass % chlorine, and a 1.000 g sample of the mixture. What are the mass percents of KCl, KNO3, and Ba(NO3)2 in the mixture?
Calculate the molecular weight of citric acid if 25.0 mL of a 0.750M sodium hydroxide solution were required to titrate 1.20g of citric acid.
The thermal decompositon of N205(g) to form N02(g) and o2(g) is a first order reaction. The rate constant for the reaction is 5.1 x 10-^-4 s^-1 at 318K. What is the half-life of this process?
For each 100.0 grams of phosphoric produced, what volume of hydrogen flouride gas is produced? Assume atmospheric temperature and room temperature.
How does the chromatographic seperation ability of thin layer chromatography compare to seperation (resolving) power of column chromatography?
Write and blance a reaction for Lithium. How many moles of H2 will be formed by the complete reaction of 6.23 moles of Li and excess water?
How much heat, in kJ, did the body have to supply to raise the temperature of the water to body temperature (37 C)?
Write a balanced molecular equation for the reaction between zinc metal, NaOH, and water to produce Na2[Zn(OH)4] and hydrogen gas.
2.55g napthalene dissolved in 30g of benzene. benzene freezes at 5.5C and resulting solution freezes at 2.13C what is the freezing point depression constant of benzene.
The density of toluene (C7H8) is 0.867 g/mL, and the density of thiophene (C4H4S) is 1.065 g/mL. A solution is made by dissolving 23.0 g of thiophene in 250.0 mL of toluene.
A solution of water kf=1.86 and glucose freezes at 1.75C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 C.
Isotonic saline solution, which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100. mL of solution
The normal boiling point of benzene is 80.1 C (Celsius) and the heat of vaporization is Hvap = 30.7 kJ/mole. What is the boiling point of benzene in C on top of Mt. Everest, where P (pressure) =
Which of the following equations represents the proper net ionic equation for the complete neutralization reaction between the strong base Ba(OH)2 (aq) and the weak acid H2S (aq)?
Its density is 3000 kg/m3 and the unit cell volume is 5.00 x 10-23 cm3. Calculate the molar mass (g/mol) of the element to three significant figures.
A certain substance X decomposes. It is found that 50% of X remains after 100 minutes. How much X remains after 200 minutes if the reaction order with respect to X is zero order?
How many milliters of boiling water are required to dissolve 20 grams of phthalic acid? If the solution is cooled to 14oC, How many grams of phthalic acid would recrystallize out?