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Calculate the molarities of zinc and silver ions after a current of 2.00 amperes flow for 20 hours. Please show step by step and the units you are using.
A first order reaction has a half-life of 157 seconds. How much time is required for the reactant to be reduced to 12.5% of its initial concentration?
In the following reaction, identify the oxidizing and reducing agents.
What is the slope of the ISE response? (This is the same as the coefficient of the log term in the ISE equation). What is the value of E', (also known as k)?
A miniature battery is composed of Zn and a paste of KOH, water, mercury (II) oxide, and mercury. Zinc and potassium hydroxide are consumed.
By the electrolysis of water, 11.2L of oxygen at STP was prepared. If a current of 0.5A was used, how long would it take?
Given a solution containing 3.75 grams of PbCl2, you add enough Ru(OH)5 powder to completely use all of the PbCl2. What is the limiting reagent?
Write the balanced molecular equation, complete the ionic equation and net ionic equation for the reaction of strontium nitrate(soluble).
Construct Lewis structures of typical resonance contributions of (a) ONC- and (b) NCO- and assign formal charges to each atom.
Nickel(II) nitrate is reduced to nickel metal in an oxidation-reduction reaction. Which is true?
A 6.35L sample of gas is collected at 55degreeC and 0.892 atm. What volume of the occupy at 1.05 atm and 20.0degree C.
Recently while a stainless steel reactor vessel was being polished, a problem occurred with the workers’ environment.
The purification of copper by electrolysis involves an anode of impure copper and a cathode of pure copper.
Draw a beaker for each of the following 3 solutions. Show (label) the particles that exist when 1 particle of each dissolves.
Carbon Disulfide, CS2, is an important industrial substance. Its fumes can burn explosively in air to form sulfer dioxide and carbon dioxide.
The haloform reaction using I2 and NaOH is referred to as the "iodoform" test for methylketones.
Addition of two moles of H2O to limonene yields terpin hydrate. What is the most likely structure for terpin hydrate?
Both normal oxidation states of iron, Fe, will form low spin complex ions with cyanide (CN-); i.e., [Fe(CN)6]4 minus (aq) and [Fe(CN)6] 3 minus(aq).
Why would you expect to find the element argon in its pure, uncombined form in nature?
Calculate the exchange current density jo[uA/cm^2], the symmetry factor, Beta, and the thickness of the diffusion layer, delta[cm].
Consider the following reaction at 25o C, [Al3+] = 2.0 M and [Zn2+] = 1.0M
Which of the above named species could be reduced spontaneously, under standard conditions, by Iodine ion (I-)?
Tartaric acid, H2C4H4O6, has two acidic hydrogens (this acid is often present in wines and precipitates from solution as the wine ages).
Aluminum is one of the most widely used metals. Aluminum is made by electrolysing aluminum oxide in a solvent called cryolite.
Why do foods cook faster in a pressure cooker relative to an open pot of boiling water?