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Your data of the density of sodium chloride solutions should have produced a straight line when plotted. How could this plot be used to determine the density of any concentration of sodium chloride
Ammonium nitrate decomposes explosively upon heating to form nirtogen gas, oxygen gas, and sterm. Assume ideal behavior for gas mixture.
Consider the reaction of (CH3)3CO- with iodomethane or 1-chlorobutane. Will the reaction rate increase, decrease, or remain the same if the concentration of iodomethane is increase? Explain.
What error would be introduced into the determination of the density of the irregularly shaped metal pellets if you had not stirred/shaken the pellets to remove adhering air bubbles? Would the dens
If 47.2 g of N2O4 is introduced into an empty 1.84 L container, what are the partial pressures of NO2 and N2O4 after equilibrium has been achieved at 45C?
The degradation of limestone by acidic rainwater follows 1st order kinetics with a t1/2 of 4500 days. Calculate the amount of limestone left after an incredibly unlikely 4 years of continuous acidic
The half-life of strontium-90, 90Sr, is 25 years. This means that half of any given quantity of 90Sr will disintegrate in 25 years.
A mixture of 0.10 mol of NO, 0.2 mol of H2, and 0.10 mol of N2 is placed in a 1.0-L vessel at 300 K.At equilibrium [NO] = 0.062 M. Calculate the equilibrium concentrations of H2, N2, and H2O.
What is the boiling point (at 1.000 atm pressure) of a solution of 1.50 mol of NaCl dissolved in 1.00 kg of water, assuming complete dissociation of the ions in solution?
The rate constant for a certain chemical reaction is 0.00250 L mol-1 s-1 at 25.0 C and 0.0125 L mol-1 s-1 at 50.0 °C. What is the activation energy for the reaction, expressed in kJ mol-1?
A study of the system was carried out. A system was prepared with [QH3] = [O2] = 3.61 M as the only components initially. At equilibrium, [Q2O4] is 0.572 M.
Elemental boron (as a gas) is produced in one industrial process by heating diboron trioxide with magnesium metal, also producing magnesium oxide as a by-product. Write the unbalanced chemical equa
In a first order reaction with only one reagent, the reaction was started with a concentration of reactant equal to 0.0800 M. After exactly two hours, the concentration had fallen to 0.0400 M. What
It is indicated that the filter will be used to isolate a band centered at 720 nm. Assuming a refractive index of 1.35 for the dielectric layer, what thickness would you recommend?
The decomposition of an aldehyde solution in carbon tetrachloride is a first order reaction with a rate constant of 1.20 x 10-3 min-1. If we start with [aldehyde] = 0.0500 M, what will the concentr
Verify your estimate by calculating the concentration of CO2 gas that is in the equilibrium with solid CaO and solid CaCO3 at 25C.
The enthalpy change for converting 10.0 g of ice at -50.0 °C to water at 50.0 °C is __________ kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, re
A tube containing hydrogen gas is attached to a device that supplies energy to the atoms. Some of the atoms have electrons that have gained enough energy to move to the 5th energy level. What is th
Sodium chloride is also formed but is soluble in water. Why would you use filtration to isolate the barium sulfate rather than evaporation or recrystallization?
One mole of a monatomic ideal gas is held at a constant temperature of 300K while the volume is changed reversibly form 1.01 to 10.01 L. Find heat, work, energy, enthalpy, and entropy changes for th
Given 600 grams of Sb4O6 is reacted with excess carbon and 490 grams of antimony is obtained, what is the percent yield for the reaction?
The heat of fusion of water is 6.02 kJ/mol. How much heat is required to convert 18.0 g of ice at -10 °C to water at 20 °C?
According to the following reaction, how many moles of ethane (C2H6) will be formed upon the complete reaction of 28.8 grams of hydrogen gas with excess ethylene (C2H4)?
The enthalpy of combustion of C12H22O11is -5652, A 2.5 g sample of lactose was burned in a calorimeter that contained 1350g of water. The heat capacity of the calorimeter is 1630 J/C, and the initi
Assuming no deviation from Raoult's Law, what is the vapor pressure of a solution of 0.750 mol of n-pentane and 1.000 mol of n-hexane?