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Problem- Calculate the final temperature of a mixture of 150.0 g of ice initially at -14.0C and 371.5 g of water initially at 91.5C
Solve the above problem and provide steps with explanation
Explain what is the pH of a solution made by adding 0.30 mol of acetic acid and 0.30 mol of sodium acetate to sufficient water to make 1.0 L of solution? Ka = 1.8 x 10-5
The standard enthalpy of formation of SiH4(g) is +34.3 kJ. The standard enthalpy of formation reaction is below. Si(s) + 2 H2(g) SiH4(g) What is the enthalpy change for the following reaction?
Explain what are the concentrations of HSO4-,SO42-, and H+ in a 0.20 M KHSO4 solution? H2SO4 is a strong acid, Ka forHSO-4 = 1.3x10-2) Compute the pH for each of these solutions: a) 0.10 MNH3, b) 0.050 M pyridine
The temperature of an ideal gas is raised from15.0 deg C to 38.0 deg C at constant pressure. The final volume of gas is 2.79 L. Explain what was the initial volume of gas
Also indicate whether the equilibrium partial pressure of HCl increases, decreases or remains the same: Action. The Temperature is increased: Some NH3 is added: The equilibrium mixture is transferred to a larger vessel
what refinements had to be made in daltons atomic theory to account for gay-lussacs results on the combining volume of
An airbag in?ates in less than 50 msec by the reaction of NaN3 to produce Na and nitrogen gas at 25 ?C. NaN3 → Na + N2 The volume of the airbag is about 30 liters, and it is ?lled to a pressure of 1.4 atm.
While 4.33g of a nonelectrolyte solute is dissolved in water to make 205mL of solution at 21 C, the solution exerts an osmotic pressure of 891torr.
A saturated solution of magnesium hydroxide (Mg(OH)2) in equilibrium with undissolved solid is prepared at 25 degree celcius. The pH of the solution is 11.03. Calculate the value of the Ksp
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream
A certain reaction has an activation energy of 70.0 kj/mol and a frequency of factor A1=7.80*10^12 M^-1 s^-1. what is the rate constant, k of this reaction at 24.0 degrees celcius.
10.00 mL of a hydrochloric acid solution was titrated with a 0.1270-M solution of barium hydroxide. If the end point was reached when 28.09 mL of the barium hydroxide solution was added, what is the molarity of the hydrochloric acid solution
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