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Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol.
How much potassium nitrate has to dissolve in water to absorb 114 kJ of heat?
In a titration experiment, a 12.5 mL sample of 0.0500 M KOH neutralized 14.7 mL of HNO3 solution. Calculate the molarity of the HNO3 solution.
2000°C the equilibrium constant for the reaction is Kc = 2.4 103. 2 NO(g) N2(g) + O2(g) If the initial concentration of NO is 0.150 M, what are the equilibrium concentrations of NO, N2, and O2.
Suppose you have a stoppered ?ask containing CO2 gas at room temperature and pressure. If the volume of your stoppered ?ask is 300.0 mL, the pressure in the room is 770 mm Hg, and the temperature in your work area is 22.0°C, how many moles of CO2 ..
Describe the nature and characteristics of PCB s. Why are they of importance to an EH&S or FS professional who encounters them when.
if 7.o moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end.
What is the estimated quantity of energy released in the combustion of methanol?
how much energy is required to vaporize 48.7 g of CH2Cl2 at its boiling point if its Hvap = 31.6 kg/mol
A pure gas sample at room temperature (25 C) has an average molecular speed of 682 m/s. What is the identity of the gas.
when NaOH is added to this solution, a white precipitate forms. Using an equation, provide the identity of the white precipitate and explain its formation.
Consider the reaction: 2 K(s) + 2 H2O(l) -> 2 KOH(aq) + H2(g), DH = ? The heat released when 24.9g of K reacts with excess water is 124 kJ. Determine the enthalpy change, DH, for the above equation as written
The rate of a chemical reaction can sometimes be determined by measuring the change in mass of the reaction flask and its contents with time
Hydrogen is produced when methane(CH4) reacts with water. The other product is CO2. Using 80.0g of methane and 16.3g of water, how many liters of H2 can be produced at STP? what is the limiting reactant?
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