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A piece of copper wire is 25 feet long and has a diameter of 2.0mm. Copper has a density of 8.92g/cm^3.
(a) how many mols of copper are there in this wire?
(b) how many atoms of copper are there in this wire?
dissolved in the same volume of distilled water, how do you expect the conductivities of each solution to compare? Explain your reasoning.
An aqueous solution containing 7.29 g of an optically pure compound was diluted to 500.0 mL with water and placed in a polarimeter tube 15.0 cm long
How many aluminum atoms would have to be placed side by side to span a distance of 6.0 µm atoms (c) If the atom is assumed to be a sphere, what is the volume in m3 of a single aluminum atom
It is common to see the the strength of aspirin tablets listed in terms of the number of grains of ASA per tablet. using the conversion factor of 15.4 grains per gram ASA,
A certain first-order reaction (A->product) has a rate constant of 7.50×10-3 at 45 . How many minutes does it take for the concentration of the reactant, , to drop to 6.25 of the original concentration?
a mixture of gases containing .20 mol of SO2 and .2 mol of O2 in a 4.0L flask reacts to form SO3. If the temperature is 25C, what is the pressure in the flask after reaction is complete?
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added to 50.0mL of the acetate solution. The Ka for the conjugate weak acid of CH3CHOO- is 1.8 x 10^-5. Calculate the pH for this solution at equilibri..
There are significant differences between Bacteria and Eukaryotes in the manner in which genetic information becomes functional gene product
The nuclide As-76 has a half-life of 26.0 hours. If a sample of As-76 weighs 344 g, what mass of As-76 remains after 538 minutes.
calculate how many protons are required to pass through the xeno-FoF1-ATP synthase complex to synthesize one ATP.
if in a certain experiment over a specific time period 0.0045 mol ph3 is consumed in a 1.9 l container each second of
What is the volume of a gas at T=35.0C and P=675 torr if the same sample occupied 42.6L at T=-27.3C and P=1.000 atm.
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