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What volume of air is required to burn 5.0 liters of methane when both are the same temperature and pressure?
if 41.2 g of water at 18.7C are mixed with 27.6 g of water at 38.4 C what will be the temperature of the mixture. (Assume that no thermal energy is lost to the surroundings)
Calculate the deltaG in kJ for this reaction at 37 oC to the nearest tenth of kJ. Only include the numerical part of your answer, do not include units
A sample consisting of various gases contains 3.4 10-6 mole fraction of radon. This gas at a total pressure of 33 atm is shaken with water at 30°C. Calculate the molar concentration of radon in the water.
Lactic acid, C3H6O3, is a monoprotic acid that is available in solid form. Determine the concentration of an unknown solution of sodium hydroxide
At a certain temperature, the root mean square speed of CH4 molecules is 1610 km/h. what is the root mean square speed of CO2 molecules at the same temperature ?
How you will protect an underground pipe line from corrosion and what are biodegradable polymers or what are conducting polymers
Draw the splitting pattern of the following substructures assuming that the vicinal hydrogen atoms have different chemical shifts.
Sodium azide (NaN3) is sometimes added to water to kill bacteria. Calculate the concentration of all species in a 0.010 M solution of NaN3. The Ka value for hydrazoic acid (HN3) is 1.9 * 10-5.
A polypeptide chain is a linear polymer of L-amino acids. when a polypeoptide chain adopts its mature 3D structure, it does so because of the van der Waals intermolecular forces of hydrogen bonding, dispersion forces, dipole/dipole and ion/dipole,..
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
When 35.0 g of an unknown nonelectrolyte is dissolved in 220.0 g of benzene, the solution boils at 83.2°C. Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
A sample of gas is extracted from the air space above the water. Using a gas chromatograph, it is determined that the mass concentration of the chloroform in air is 89 mg/L. Determine the value of the Henry's Law constant in units of M atm.
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