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For a particular reaction, ?H° is 55.4 kJ and ?S is 94.1 J/K. Assuming these values change very little with temperature, over what temperature range is the reaction spontaneous in the forward direction?
According to the above expression how many moles of KHC8H4O4 are needed to neutralize 25.00 mL of 0.10 M NaOH
A compound is composed of elements C, H, and N. A 11.550-mg sample of the unknown compound was combusted, producing 31.332 mg of CO2 and 8.983 mg of H2O. What is the empirical formula for this compound
Calculate the normal boiling point of a 1.7m aqueous solution of the molecular compund sucrose.
For the following battery: Cd(s) | CdCl2(aq) || Cl-(aq) | Cl2(l) | C(s) Write the reduction half-reaction occuring at the C(s) electrode. (Include physical states of reactants and products.) From which electrode will electrons flow from the batter..
Calculate (a) the mass percentage, (b) the mole fraction, (c) the molality, (d) the molarity of H2SO4 in this solution.
The decay of radioactive elements follows first-order kinetics. Therefore, the rate of decay can be described by the same integrated rate equations and half-life equations that are used to describe the rate of first-order chemical reactions.
Hemoglobin is the protein that transports O2through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules
What is the pH of a solution of 0.050M formic acid(HCO2H, Ka=1.8*10^-4) and 0.035M sodium formate
what volume of carbone dioxide ,measured at STP,would result from the reaction of 9.786 kg of oxygen with excess pentane
What are the H3 O^+ and OH^- concentrations of solutions that have the following pH values? A. pH1 B. pH 13 C. pH 0 D. pH 1.24 E. pH 7.96
How many grams of naphthalene (C10H8) must be added to 25.00 g of CCl4 so that the vapor pressure of CCl4 over the solution is 483 mm Hg?
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M, what are the concentrations of NO, N2, and O2 when the reaction mixture reach..
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