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Problem- A 20.0 mL sample of a Cu2+ solution was diluted to 250.0 mL. A portion of this solution was found to have an absorbance of 0.15 under the same conditions that were used to generate the given absorbance vs. [Cu2+] graph. What was the concentration of Cu2+ ions in the original sample?
Your answer must be supported by illustrations, Please answer with work shown to receive points
Depict the Lewis structure of carbonate ion showing all possible resonance structures if there are any. Find out the formal charge of each atom.
a manufacturer of metal polishing compound which can polish SS items by buffing method. Currently am using Calcined Alumina Polishing grade as a main ingredient but i need much more polish.
the world's estimated annual gas reserves in 2006 were 6124 trillion ft3 .The world rate of annual use was 105.5 trillion feet3. How long these reserves will last if the rate of use continues?
My dilemma is that I'm unsure on how to find the actual limiting reactant, and what information I should use. There's too much given; but from my introspection, we only need 1-Octene and the Pt catalyst
Calculate the wavelength (in picometers) associated with hydrogen atom moving at a speed of 3.13 x 10^3 cm/s
Explain why you might expect that the dehydration of 1-butanol as well as 2-butanol would produce a similar composition of alkenes
Assuming that the total pressure of the gases is 1.52 atm and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each gas.
Oxygen gas, generated by the reaction 2KClO3(s) ? 2KCl(s) + 3O2(g), is collected over water at 27°C in a 3.78-L vessel at a total pressure of 730. torr. (The vapor pressure of H2O at 27°C is 26.0 torr.) How many moles of KClO3 were consumed in the..
Calculate the mass of nitrogen dissolved at room temperature in an 76.0L home aquarium. Assume a total pressure of 1.0atm and a mole fraction for nitrogen of 0.78.
If 6.40 multiplied by 10-9 mol of 176W emits 1.07 multiplied by 1015 positrons in 1.00 h, what is the decay constant
Show how you would accomplish the following synthetic transformations
There is an increase in temperature of 56 K. Calculate the heat lost or gained by the system in response to this change in the external temperature. Express your answer in J. Heat capacity for Helium = 20.8 J/(mol K) Molecular weight for Helium = ..
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