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The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 552 grams of ice initially at -11°C to liquid water at 89°C?
dust falls on chicago at a rate of 65mg m-2 day-1. major metallic elements in the dust include al mg cu zn mn and pb5.
Calculate pH of a solution of L-glutamic acid in which the ionic species with net charge=-1 is 5 times greater than that of the isoelectric structure
water is flowing through the pipeline, and (b) also when air at atmospheric pressure and 20oC with a density of 1.20 kg/m3 is flowing in the pipeline.
a steel cylinder holds 150.0 mol argon gas at 25 degrees c and a pressure of 9.53mpa. after some argon has been used
Pure gold has a density of 19.32 g/cm3. How large would a piece of gold be if it had a mass of 318.97 g
Which will experience the greater effective nuclear charge, the electrons in the n=3 shell in Ar or the n=3 shell in Kr. Which will be closer to the nucleus. Explain.
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm . What is the radius of a gallium atom
Describe exactly how you will prepare 100 mL of 4M KCL. This solution is an "Ionic Strength Adjuster" solution and is usually labeled "ISA"
Liquid butane C4H10 , the fuel used in many disposable lighters, has delta Hfinal=-147.5 kj and a density of 0.579 g/ml . Use Hess's law to calculate the enthalpy of combustion in kJ/mol.
What is the rate constant of a first-order reaction that takes 8.50 minutes for the reactant concentration to drop to half of its initial value?
a mixture of three moles of oxygen o2g and six moles of hydrogen h2g is placed in a sealed evacuated container made of
The dow process isolates magnesium from molten MgCL2. How many moles of electrons are required to convert 54.7g of magnesium
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