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Explain if you have an equimolar mixture. If not, discuss how you would achieve equimolar condition. Show calculations if necessary.
Air bags in automobiles inflate when sodium azide, NaN3, rapidly decomposses to its component elements: 2NaN3(s)-----2Na(s)+3N2(g). a)how many moles of N2 are formed by the decomposition of 2.50 mol
If 1000.0 mL of 1.5M sodium hydroxide is mixed with 1000.0mL of 1.5M hydrochloric acid, after the reaction is complete, what are the concentrations of all the ions remaining in the solution
explain why pure water does not conduct electricity and what happens when a strong electrolyte is dissolved in it
C6H6 gas is burned in the presence of excess oxygen. What volume of liquid water could be condensed from combustion of 12.0 moles of Benzene (C6H6)? Assume density of water 1.0 g/mol.
What is the specific heat constant if 621 g of Metal A raises the temperature of water by 3.20°C and releases 1.20 kJ of heat
if a 5.0ml aliquot (portion) of the above solution was taken and diluted to 500.0mL. What is the concentration of this new solution
how would you prepare 2.500 liters of 1.500 M nitric acid from a stock solution of concentrated (16.05 M)
What is the mole fraction of 1.98 m Fe(NO3)3 (aq). The molar mass of Fe..=241.9g/mol and the molar mass of H2O is 18.02 g/mol
when do we use melting point depression method to determine molecular mass vs. other methods such as tiltration and quantitative precipitation
A reaction mixture contains 0.41 M I2, 0.27 M Br2 and 3.5 M IBr. Which of the following statements is TRUE concerning this system. I2(g) + Br2(g) 2 IBr(g) Kc = 1.1 × 102
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [HCl]eq = 0.13 M, [HI]eq = 5.6 × 10-16 M, [Cl2]eq = 0.0019 M.
a 25.0g sample of calcium chloride is dissolved in water to give 6.52 * x10^2 ml of solution. What is the concentration of the resulting solution in calcium, and what is the total ion concentration
Some chambers used to grow bacteria that thrive on co2 have a gas mixture consisting of 95% co2 and 5% o2 what is the partial pressure of each gas if the total pressure of each gas if the total pres
The reaction below reaches equilibrium in a closed reaction vessel. The enthalpy change for the forward reaction is +135 kJ/mol. Does the mass of Na 2 CO 3 increase, decrease or stay the same if the
K = 0.040 for the reaction below at 450C. If the reaction starts with .20M Cl2 and .20M PCl3 what concentration of PCl5 will be present at equilibrium PCl5(g) <----------> PCl3(g) + Cl2(g)
At 40oC, Kc=0.0303 for the reaction below. H2 + Cl2 --> 2 HCl In an experiment carried out at 40oC, the initial concentrations were [H2]=[Cl2]=[HCl]=2.25 mol/L. What is the equilibrium concentrat
What is the value of the reaction quotient (Qc ) for the reaction below if a 2.75-L flask contains 0.0282 mol NO2(g) and 0.612 mol N2O4(g) at 25°C
Write the formula for ionic compound formed from acetate anion ch3coo and each cation. Na, Ba, Al, Ni
By what factor does the reaction rate increase at 25oC when the catalyst is used. Assume that the Arrhenius pre-exponential factor, A, is the same for the catalyzed and uncatalyzed reactions.
For the elementary process below, the activation energy is 27 kJ/mol and the enthalpy change is -20 kJ/mol. What is Ea for the reverse process, in kJ/mol
A zero-order reaction has a constant rate of 4.60×10?4 M/\rm s. If after 70.0 seconds the concentration has dropped to 6.50×10?2 M, what was the initial concentration
An absorption measurement of this ASA solution at 275 nm in a UV-vis spectrometer with a 1.00 cm cell was 0.78. The solvent had an absorbance of 0.01 at 275 nm. Measurement of a 4.05x10-4 M ASA stan
A 2.476 g sample of a monoprotic acid was dissolved in wate. it took 21.36 mL of a 0.1577 M NaOH solution to neutralize the acid. calculate the molar mass of the acid.
Calculate the value of the equilibrium constant for the reaction that occurs when solid sodium oxalate is dissolved in water.