FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 7: Energy Storage

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

In general,a modern hybrid vehicle is less polluting than a standard vehicle because it runs on both a

A) gasoline engine and an electric motor run by a rechargeable battery.
B) gasoline engine and a fuel cell.
C) fuel cell and an electric motor run by a rechargeable battery.
D) gasoline engine and a cleaner diesel engine.

Correct Answer

verified

Show Answer

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

Why is it so expensive to ship hydrogen as a liquid as is often done with other gas?

A) Hydrogen is very heavy to ship
B) Hydrogen is very dense to ship
C) Hydrogen has to be shipped at a very low temperature
D) Hydrogen in very flammable

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

Reforming processes can store hydrogen fuel in a liquid form as another molecule.Which of the following cannot be reformed into hydrogen?

Which of the following automotive energy storage devices would give rise to the fastest acceleration from zero to 60 mph?

A NiCd battery uses nickel and cadmium to produce a potential difference.Using these equations,answer the following questions. I.2NiO(OH) _(s) + 2H₂O _(l) + 2 e¯ $\rarr$ 2Ni(OH) _{2 (s)} + 2 OH¯ _(aq) II.Cd_(s) + 2OH¯ _(aq) $\rarr$ Cd(OH) _{2 (s)} + 2e¯ III.Cd _(s) + 2NiO(OH) _(s) + 2 H₂O _(l) $\rarr$ 2 Ni(OH) _{2 (s)} + Cd(OH) _{2 (s)} Which equation represents what takes place at the anode?

How do the interactions that are broken in water when it is boiled compare with those broken when water is electrolyzed?

During the chemical reaction in an electrochemical cell,

Why doesn't water naturally become hydrogen and oxygen gas when exposed to light?

Batteries are still preferred over supercapacitors for portable electronic applications.What factor(s) give rise to this preference?

How does the reaction of hydrogen and oxygen to produce energy in a fuel cell differ from their interaction during the direct combustion of hydrogen and oxygen? I.The direct combustion of hydrogen and oxygen produces several different products,whereas the fuel cell produces only water II) Much less heat energy is produced in a fuel cell than via direct combustion of hydrogen and oxygen III) In the fuel cell,there is an oxidation-reduction reaction between hydrogen and oxygen.In the direct combustion of hydrogen and oxygen,there is no such reaction IV) It is much easier to control the hydrogen and oxygen during direct combustion than during their reaction in a fuel cell

Whenever a substance is oxidized,

For the compound Fe₃O₄,what is the oxidation state of Fe?

In this electrochemical cell,the reduction half reaction is

Chemical energy is converted directly into electrical energy in

For the compound FeCl₃,what is the oxidation state of Fe?

In a fuel cell,

Which of the following statements is not true about PEM fuel cells?

What are the typical units for specific energy?