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A 7.45 g sample of solid LiOH is completely dissolved in 120.00 g of water at 23.25°C contained in a calorimeter with a heat capacity of 11.7 J/°C. The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
2) Calculate the concentration of an aqeuous solution of Ca(OH)2 pH of 12.05.
9.780 grams of gaseous mixture contains ethane ,C2H6 and propane ,C3H8. it needs 1.120mol of oxygen when complete combustion to form CO2 and H2O. Compute the mass percent of C2H6 in the original mixture.
Calculate the half cell potential for the reduction of Pb(II) to metallic Pb(I) in a saturated Lead(II) sulfate solution
the energy is 18.44 kj/mol and for the methyl group in equatorial position the energy was 8.66 KJ/mol based on this information which is more stable and why?
Draw the Lewis Dot structure for the following, then determine the molecular structure, hybridization, bond angle and if it is polar or non-polar. N2H2.
Calculate K for 2 NO(g) + O2(g) 2 NO2(g) from the observation that when equilibrium is established at 500 K, there are 0.190 moles NO2, 2.65 X 10-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
The Ksp value for Copper (II) Iodide , Cu(IO3)2 is 1.4 x 10^-7 at 25 C calculate its solubility at this temperature.
if 2.67 mL of 0.205 M KOH is required to completely neutralize 25.0mL of a CH3COOH solution, what is the molarity of the acetic acid solution?
The heat of formation of MnO is -385 kj/mol and that of Al2O3 is -1670 kj/mol. What is the heat of the reaction in kj
calculate the PH of a solution made by adding 5.00gram of sodium hydride,NaH,to enough water to make 0.900 litre of solution?
Calculate the heat released when 2.82 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.in kJ
When the nuetron to proton ratio in a raditoactive isotope is higher than that required for stability, it main gain greater stability by emitting
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