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A copper wire of length 1.317m and diameter 3.26 x 10-4 m is blackened and placed along the axis of an evacuated glass tube.
The wire is connected to a battery, a rheostat, an ammeter, and a voltmeter, and the current is increased until, at the moment the wire is about to melt, the ammeter reads 12.8A and the voltmeter reads 20.2 V.
Assuming that all the energy supplied was radiated and that the radiation from the glass tube is negligible, calculate the melting temperature of copper.
tris pentaflourophenylborane commonly known as barf is a polymerization initiator used in the manufacture of plastics.
the first-order rate constant for the reaction of methyl chloride ch3cl with water to produce methanol ch3oh and
What will happen to the retention time if the temperature of the column is increased. Calculate the following peak areas from your GC chromatogram.
Ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 856 g of ammonia gas using air as your source of nitrogen gas
What is the volume of a sample of chlorine gas with a density of 0.0032 g/cm3 and a mass of 1.45 g?
some kcl is dissolved in water 25degc where it completely dissociates. the vapor pressure of pure water at 25degc is
If an enzyme-catalyzed reaction proceeds at 25% maximal velocity at 5 mM substrate concentration, calculate the Km of the enzyme.
What is the maximum number of unpaired electrons an atom can have in this series? Will thsi be a new record for atoms in the periodic table?
Discuss two ways that ammonium compounds decompose when they are heated. What chemical reaction is involved in the thermal decomposition of ammonium persulfate?
Calculate the mass of ascobic acid in the whole tablet( use mass of whole tablet) c) Calculate the %error in the mass of ascobic acid in one whole tablet
a solution of ammonia and water contains 3.10times1025 water molecules and 5.60times1024 ammonia molecules. how many
Calculate the pH of an HCl solution if 16.5 mL of this HCl solution is titrated with a 0.454 M NaOH and it took 5.65 mL of the NaOH to reach the equivalnce point.
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