ZC

Zhengguo Cai

Numerade Educator

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Educator Statistics

Numerade tutor for 7 years
88 Students Helped

Topics Covered

Discover the Wonders of Chemistry: Your Introductory Guide
Exploring the Fascinating World of Electrochemistry | Learn More Now

Zhengguo's Textbook Answer Videos

04:11
Chemistry A Molecular Approach

Convert each temperature. $$ (a) . \text 32^{\circ} \mathrm{F} \text { to }^{\circ} \mathrm{C} (\text { temperature at which water freezes) } $$$$ (b) . \text 77 \mathrm{Kto} ^{\circ} \mathrm{F} (\text { temperature at liquid nitrogen) }$$ $$ (c) . \text -109^{\circ} \mathrm{F} \text { to }^{\circ} \mathrm{C} (\text { temperature of dry ice) } $$ $$ (d) . \text 98.6^{\circ} \mathrm{Fto} \mathrm{K} (\text { body temperature) }$$

Chapter 1: Matter, Measurement, and Problem Solving
Zhengguo Cai
01:45
Chemistry A Molecular Approach

In electrochemistry, what kind of reaction can be driven by electricity?

Chapter 19: Electrochemistry
Zhengguo Cai
03:29
Chemistry A Molecular Approach

Explain the difference between a voltaic (or galvanic) electro- chemical cell and an electrolytic cell.

Chapter 19: Electrochemistry
Zhengguo Cai
02:23
Chemistry A Molecular Approach

What reaction (oxidation or reduction) occurs at the cathode of a voltaic cell? What is the sign of the cathode? Do electrons flow toward or away from the cathode?

Chapter 19: Electrochemistry
Zhengguo Cai
01:37
Chemistry A Molecular Approach

What unit is used to measure the magnitude of electrical current? What unit is used to measure the magnitude of a potential difference? Explain how electrical current and potential difference differ.

Chapter 19: Electrochemistry
Zhengguo Cai
03:17
Chemistry A Molecular Approach

Describe the basic features of a cell diagram (or line notation) for an electrochemical cell.

Chapter 19: Electrochemistry
Zhengguo Cai
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