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Problem- How to find the mass of copper in a brass sample in grams with the number of moles of copper in a bass sample is a) .0119 mol b) .012mol c) .0168 mol
I am not able to get the correct answer please help me
Problem- For similar light intensity, compact flourescent bulbs use about 25% of the energy of incandesant bulbs. Lets say you replaced a bulb of 75 W with a flourescent bulb and that your utility charges $0.15/kW-hour. How many dollars would you ..
Compute the final ph of 25ml of buffer 0.1mol/l CH3COONa, ph=3.50 after addition of 1ml of 0.1mol/l HCl
97.5g sodium chloride were dissolved in distilled water in 500ml volumeristic flask. the mixture was stirred to form a
Explain how many grams of water must be added to 246 grams of sucrose to produce a solution that is 8.00% (m/m)
In the Bohr model, the potential energy of a hydrogen atom in the nth orbit has a value we will call Un. What is the potential energy of a hydrogen atom when the electron is in the (n+1)th Bohr orbit. (Give your answers in terms of Un and n.)
A 5.00 L flask at 279 K contains a mixture of He and O2 with a total pressure of 1.00 atm. If the mole fraction of O2 is 0.40, what is the mass fraction of O2?
In a simplified and example version of the solar system model (developed by Neils Bohr, a Danish chemist), an electron in the first orbit has an energy of 2 J
Dermatan sulfate was treated with dimethyl sulfate. The product was hydrolyzed under acidic conditions. Draw the structure of the products.
Write the balanced chemical equation for the reaction of aqueous phosphoric acid with aqueous sodium hydroxide (NaOH is being titrated). Then calculate the volume of .200 M H3PO4 could be neutralized using 50.00 ml of your diluted NaOH
quantitative analysis of cl- ion is often performed by a titration with silver nitrate using sodium chromate as an
Use net ion equations to show how ammonium chloride (NH4Cl) is acidic and sodium acetate
A 100.0 mL aliquot of a dibasic compound with Kb1= 1*10^-4 and Kb2 = 1*10^-8 was titrated with 1.00 M HCl. Calculate what the pH of the solution would be after 15.0 mL of the acid was added to the 100 mL aliquot base.
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