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Describe the components and operation of a concentration cell, including what distinguishes them from other types of galvanic cells. Include all necessary parts of the cell and the purpose of each.
Write plausible half-equations to represent each of the following in acidic solution? Express your answer as a chemical equation. Identify all of the phases in your answer.
What us the pH at the equivalence point for the titration of 0.2 M nitrous acid by 0.2 M sodium hydroxide. Ka for nitrous acid is 4.5 x 10^-4
When 35.0 g of an unknown nonelectrolyte is dissolved in 220.0 g of benzene, the solution boils at 83.2°C. Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
KCN is dissolved in water in a calorimeter that has a total heat capacity of 2.294 kJ·K-1, the temperature decreases by 0.470 K. Calculate the molar heat of solution of KCN.
Liquid carbon disulfide burns in oxygen to form carbon dioxide and sulfur dioxide gases. Calculate the number of oxygen molecules it would take to consume 500 molecules of carbon disulfide
A proposed investment consists of constructing building, purchasing production machinery, as well as operating for 20 years its first cost is $250,000 with salvage value $50,000.
A 30.36 gram sample of a hydrate of MnSO4 was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, 27.12 grams of the anhydrous compound remained. What is the formula of the hydrate?
The concentrations of Al and K in a sample of river water are 0.50 mg/kg and 1.3 mg/kg, respectively. Express the concentration in molality
The Dosit Corporation is a chemical manufacturer, and its products are sold to other manufacturers and used in household cleaning products. The company has 290 employees with about 220 involved in the production process, 30 working as maintenance per..
What is the percent yield of a reaction in which 212 g phosphorus trichloride reacts with excess water to form 109 g HCl and aqueous phosphorus acid (H3PO3)?
Calculate the molar solubility and the solubility of iron (II) hydroxide in pure water then in 0.125M NaOH(aq).
The following reactions involve gases or non volatile solids. How will the pressure change for these reactions if they are carried out in a closed container.
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