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Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision: qV =26.434 kJ/g. When a 2.088 g sample of C6H5COOH(s) was burned in a particular bomb calorimeter, the temperature increased by 11.77 oC. In a second experiment, a 1.217 g sample of a compound with the formula C6H14O(l) was burned in the same calorimeter. The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 and 286 kJ mol 1
Based upon your answer to Part a, do you think a significant amount of salt would form from mixing quimolar amounts of benzoic acid and 4-nitroaniline? Explain your reasoning.
The first mechanism includes sodium acetate to yield beta-penta-acetate and the first mechanism includes zinc chloride (Lewis acid) to form an oxonium ion to yield the alpha-penta-acetate product. Any help to draw out the mechs would be much appre..
For a reaction of hydrogen with iodine, the rate constant is 2.45*10^-4 L mol-1 s-1 at 302 C and 0.950 L Mol-1 s-1 at 508 C.
Calculate the molality of a hydrochloric acid solution that is 26.4% by mass and has a density of 1.19 g mL^-1
A chemist wants to make 5.5L of a 0.280M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use
A 1L flask is filled with 0.25 mol N2and 0.65 mol H2 at 20 oC. These gases react to make NH3, heating up the flask to a temperature of 45 oC.
Natural K consists of 2 stable isotopes 39K(93.10%) and 41K(6.88%) and one radioactive isotope 40K (0.0118%, t1/2 = 1.27x109 years).
Write the ionic equation for the reactions. Write the net ionic equations for the reactions, A.) LA2(CO3)3 (s)+HCL (aq)= LaCl3 (aq) + CO2 (g) + H20
Excitation of the 3s electron from Mg+ to a 3p orbital occurs at 280.0 nm. The probability of filling a 3p orbital relative to the 3s orbital is 3/1. Assuming that the total Mg+ population in a given atomization source is 3.5 x 10^18 ions at any g..
One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is constant at 74°C. Weights are removed suddenly from the piston to give the following sequence of three pressures.
A hypothetical element Z has two stable isotopes: Z-46 = 46.046 u 64.08% Z-51 = 50.826 u 35.92% What is the average atom weight of the element?
what is the molarity of a potassium permanganate solution if 25.0 ml of it reacts with 10.0 ml of .0100 M sodium sulfite under acidic condictions.
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