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A solution of copper sulphate CuSO4 was electrolyzed between copper electrodes. Copper of 6.4 grams was deposited on the cathode. determine the value of Faraday used If the electrolysis was carried out for eighty minutes with a current of four amperes flowing.
What are the frequency and energy of a photon with a wavelength of 900 nm. Report your answers to three significant digits.
A gas occupies a volume of 380. ml at 135 °C? At what temperature will the volume of the gas be equal to 535 ml?
Use Charles's law to calculate the volume the gas will occupy if the temperature is increased to 170.5^circ C while the pressure is held constant.
Describe the mixture before it is centrifuged. Be specific using scientific words that aplly such as homogeneous or heterogeneous
NaOH is a strong electrolyte and CH3-OH is a nonelectrolyte. how does their dissociation in water differ
Consider the four equations of states(EOS) below describing PVT behavior of gases. Let a and b be constants. EOSI : PV = RT EOSII: (P-a)V = RT EOSIII: P(V-b) = RT EOSIV: P = RT/(V-b) - a/V (a) Prove for EOSI that both U and H are functions of T on..
grams of a sulfate-containing unknown with excess barium chloride. If 0.6500 grams of barium sulfate is produced, what is the percentage sulfate in the unknown?
The reaction between nitric oxide (NO) and hydrogen is thought to proceed via the following mechanism. Do not make any assumptions about which step is rate determining
The pH of an aqueous solution containing only a monoprotic weak acid has a pH of 4.1. What is the concentration of hydronium ion, H3O+, in the solution? (a)2 x 10?3 M (b)2 x 10?4 M (c)8 x 10?4 M (d)8 x 10?5 M (e)0.61 M
the standard electrode potentials calculate the standard free energy (kJ) for the given reaction.
what is the maximum number of grams of [Co(NH3)6]Cl3 that can be produced?
Why are monochromators (prism or grating monochromators) used in scanning instruments as opposed to absorption filters
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