Lithium ion batteries are not used for long term storage of energy. Why do you think that is? Choose from the choices below:     Because they lose charge over time.       Because they take a long time to charge.       Because they can only be used for small items, like phones.       Because they are not safe to use.

An aqueous solution of an unknown salt of gold is electrolyzed by a current of 2.75 amps for 3.39 hours. The electroplating is carried out with an efficiency of 93.0%, resulting in a deposit of 21.221 g of gold. a How many faradays are required to deposit the gold? b What is the charge on the gold ions (based on your calculations)?

How does a geothermal power plant generate electricity? What are the advantages and disadvantages of geothermal power?

Explain the advantages and disadvantages of hydrogen as an alternative fuel.

A student who has mercury amalgam fillings in some of her teeth is eating a piece of candy. She accidentally bites down on a piece of the aluminum foil wrapper and experiences a sharp sensation in her mouth. Explain what has happened in terms of electrochemistry.

9.70 Residential electric service in the United States generally operates at 120 V, but transmission substations feed power onto the grid at 110 kV or higher. What advantage is realized by transmitting electricity at such a high voltage?

Calculate the standard free-energy change at 25C for the following reaction. 4Al(s)+3O2(g)+12H+(aq)4Al3+(aq)+6H2O(l) Use standard electrode potentials.

What is G for the following reaction? 2Br(aq)+Cl2(g)Br2(l)+2Cl(aq) Use data given in Table 19.1.

Some metals, such as iron, can be oxidized to more than one oxidation state. Obtain the balanced net ionic equations for the following oxidation reduction reactions, in which nitric acid is reduced to nitric oxide, NO. a Oxidation of iron metal to iron(II) ion by nitric acid. b Oxidation of iron(II) ion to iron(III) ion by nitric acid. c Oxidation of iron metal to iron(III) by nitric acid. [Consider adding the a and b equations.]