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For a particular isomer of C8H18, the combustion reaction produces 5099.5 kJ of heat per mole of C8H18(g) consumed, under standard conditions.
C8H18(g)+25/2 O2(g) ?8CO2(g)+9H2O(g)
ΔH°rxn=-5099.5 kJ/mol
What is the standard enthalpy of formation of this isomer of C8H18(g)?
A nurse administered 4.90 mL of a radioisotope solution that has an activity of 155 μCi/mL . What total dose of the radioisotope did the patient receive?
consider the reaction shown below.4 ph3g p4g 6 h2gif in a certain experiment over a specific time period 0.0033 mol
Determine the concentration of H+ ions in a solution of HCl that was prepared b diluting 50.0 mL of concentrated (11.6 M) Hydrochloric acid to a final volume of 500mL?
The addition of iodide (NaI or KI) often catalyzes SN2 reactions o alkyl chlorides or bromides. explain how by showing reaction equations of what happens.
A person whose mass is m = 56.0 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the angle a = 22.1° with the horizontal.
how many molecules of glucose must be consumed to generate the ATP necessary to complete synthesis of these 53 protein molecules
Consider a scuba tank (12.0 L volume) initially at 1.00 atm that is subsequently filled to 200atm with oxygen (average M ~ 32.00 g/mol, Cp! = 29.355 j.mol^-1k^-1) behaving as an ideal gas. Assuming the tank is sitting in water at 298 K at an external..
A cell based on the reaction below has a standard potential of +0.42 V at 25°C. If all of the species are at standard conditions except [H+], at what pH will the cell have a potential of zero. H2O2(aq)+ 2 H+(aq) + 2 Cl-(aq)? Cl2(aq) + 2H2O(l)
Consider the cross-sectional area of the river is 20 m2 after all discharges. Calculate the flux at point characterized by the cross-sectional area.
Compute the pH after the addition of 0.0mL, 5.00mL, 18.0mL, 25.0mL, 38.0mL, 50.0mL and 65.0mL of 0.200 M NaOH (aq) to 50.00mL of 0.100 M malic acid, L-hydroxybutanedioic acid. pka1=3.459, pka2=5.097
Use the hederson hasselbalch equation to calculate the number of moles and grams of monobasic sodium phosphate (NaH2PO4) and dibasic sodium ( Na2HPO4) necessary to make one liter of solution.
Compute the concentration of a solution prepared by adding up enough water to 2.3 g of sucrose (C12H22O11) to make a total of 80 mL of solution.
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