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Estimate the ethylene glycol C2H6O2 mass in gram that should be added to 12.0 L of water to produce a solution for use in a car's radiator as antifreeze that freezes at -23.3oC. Assume the density of water to be 1.00 g/mL and Kf = 1.86oC .kg/mol.
A 50 ml sample of a commercial vinegar is titrated against a 1.00 M NaOH solution. what is the concentration of acetic acid present in the vinegar if 5.55 ml of the base was required for the titration
a 45.0 g aluminum block initally at 28.0 celsius absorbs 825 joules of heat. what is the final temperature of the
Calculating standard enthalpy change, heat, and mass of a reaction, Methanol (CH3OH) is used as fuel in race cars. Calculate the standard enthalpy change for the reaction, assuming H2O(g) as a product.
If an aluminum scuba tank contains compressed air at 2750 psi, what is the pressure in torr
Calculate ΔE for a system undergoing an endothermic process in which 15.6kJ of heat flows and where 1.4kJ of work is done on the system.
1.00 mole of an ideal gas (Cv,m=12.47 J mol-1 K-1) is initially at 300 K and in 10 L and is expanded to 20 L in two different ways described below. Compute w, q, deltaU, delta S, and delta S total for both of these two processes.
Find the concentration of Cu2+ in equilibrium with CuBr(s)and 0.10 M Br
At 22C(Celsius) an excess amount of a generic metal hydroxide M(OH)2 is mixed with pure water. The resulting equilibrium solution has a pH of 10.14. What is the Ksp of the salt at 22C
A buffer contains 0.40M base, B, and 0.25M of its conjugate acid, BH+, and has a pH = 8.88. What is the pH after 0.0020mol of HCl is added to 0.25L of this solution?
What is the mass, and the volume, of this seawater that contains 1.00 g of oxygen?
Salicylic acid C7H6O3 has been suggested as a calometric standard. Its heat of combustion is -3.023x10^3 kj/mol C7H6O3/ from the following data find out the heat capacity of a bomb calorimeter assembly.
what is the rate order with respect to (C12H12O11) b)what is the rate constant. Using the rate constant calculate the concentration of sucrose at 39, 80, 140, 210 minutes if the initial sucrose concentration was 0.316M and the reaction was zero or..
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