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(a)Which electrode of a voltaic cell, the cathode or the anode, corresponds to the higher potential energy for the electrons?
(b) What are the units for electrical potential? How does this unit relate to energy expressed in joules?
(c) What is special about a standard cell potential?
A garage that specializes in foreign cars had a small magnesium fire when a car part was ignited. The mechanic knew from his training that he should not use water but could use a dry powder like a sodium chloride based fire extinguishing powder (MET-..
Calculate the energy in joules required to ionize a hydrogen atom when its electron is initially in the n=2 energy level
what is the pH of a solution obtained by adding 3.50g of HBr to 435mL of a 0.639M solution of HNO3?
physical properties of diethyl ether c2h52o are given as .deltahdeg fusion 7.66 kjmol melting point -116.0degc
Problem- In the reaction of bromine with potassium iodide to produce potassium bromide and iodine, what is reduced and what is the reducing agent
Elemental analysis of a 4.51 mg sample of unknown hydrocarbon shows that it contains 3.942721 mg of carbon. If the molecular formula is C7Hx, what is the value of x
What is the cell potential for the reaction Mg(s)+Fe2+(aq) -> Mg2+(aq)+Fe(s) at 63 degrees celsius when [Fe2+] = 3.50M and [Mg2+] = 0.310M. Express your answer to three significant figures and include the appropriate units.
The pH of a 0.02M solution of a weak acid was measured to be 4.6. What is the [H+] in the solution? Calculate the Ka and pKa for this acid.
Write a balance equation for each of the following reactions and identify the type of reaction: a) Solid potasium chlorate is heated to form solid potassium chloride and oxygen gas; b) Carbon monoxide gas and oxygen gas combine to form carbon diox..
silver (I) perchlorate into a 50.ml volumetric flask and filling the flask to the mark with water. calculate the concentration in mol/L of the silver (I) perchlorate soluation
Calculate the energy in the form of heat (in kJ) required to convert 325 grams of liquid water at 20.0 °C to steam at 115 °C. Assume that no energy in the form of heat is transferred to the environment
What is the vapor pressure (in torr) above a solution prepared by mixing 47.89 g of water, H2O, with 47.65 g of ethanol, C2H5OH, at 63.50 °C?
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