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Charles flew the balloon for fifteen miles and stayed in the air for a total flight time of 45 mins. the balloon was made of silk coated with a thin layer of natural rubber and had a diameter of 27ft. he generated the hydrogen gas needed to lift the balloon by mixing a large amount of iron with aqueous sulfuric acid. if he used 1000 lbs. of iron and excess sulfuric acid, how many liters of hydrogen gas were made?
What would be the expected J-coupling (in Hertz) for the two non-aromatic trans-alkenyl protons
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.200 M sodium benzoate. How much of each solution should be mixed to prepare this buffer
in a batch reactor the decomposition of species a follows n-th order kinetics as a-gtb rk cnthe conversion of a
Assume for the purposes of this problem that, to be an alcohol (-ol) or an amine (-amine), the hydroxyl or amino group must be bonded to a tetrahedral (sp3 hybridized) carbon atom. Write the structural formula of a compound with an unbranched chai..
Calculate the amount of heat liberated (in kJ) from 399 g of mercury when it cools from 73.0°C to 12.0°C.
What proportions of ethanol and water should be mixed in order to produce 100 cm3 of a mixture containing 50 percent by mass of ethanol.
A student determines the iron(II) content of a solution by first precipitating it as iron(II) hydroxide, and then decomposing the hydroxide to iron(II) oxide by heating.
Identify the element oxidized and reduced in the following redox rxn. Also indicated the number of electrons lost/gained by each atom.
Mixed 1.15g of Na2HPO4 (MW=142g/mol) and 2g NaH2PO4 (MW=138 g/mol) in 1L of water. What is the concentration of your buffer and what is the pH
A certain reaction has an activation energy of 63.62 kJ/mol. At what Kelvin temperature will the reaction proceed 4.50 times faster than it did at 347 K
a car radiator coolant, loses 999J of heat. What was the initial temperature of the ethylene glycol if the final temp is 32.5 degrees C
temperature of 15.4°C is placed flat on a sheet of iron weighing 21.3 g and at a temperature of 46.6°C. What is the final temperature of the combined metals?
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