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UNIT 2 — MILESTONE 2:
Chemical Reactions and Energy
Milestone
SUBMIT MILESTONE
109
Question 2
What is the product of the chemical
reaction in a hydrogen fuel cell?
●
Mark this question
hydrogen peroxide
water
hydrogen
oxygen
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SAVE & CONTINUE
Here are all the tutorials from Unit
2. Use them as needed throughout
the Unit 2 Milestone.
UNIT 2 TUTORIALS
2.1 Stoichiometry
2.1.1 Quantities in
Chemical Reactions
2.1.2 Introduction to
Reactions
2.1.3 Chemical
Equations
2.1.4 Reaction
Stoichiometry
2.1.5 Chemical
Reactions in the Real
World
2.2 Energy
2.2.1 Energy Basics
2.2.2 Matter and
Energy
2.2.3 Laws of
Thermodynamics
2.2.4 Calorimetry
2.2.5 Energy in Our
World
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15
〉
2.3 Nuclear Reactions
2.3.1 Introduction to
Nuclear Chemistry
2.3.2 Nuclear Reactions
and Radioactive Decay
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Related Questions
The following reactions are Redox reactions that happen quite often in the world around you. Please write down the balanced reaction and identify the element being oxidized and the element is reduced. Doing some online research might be a good idea here.
1. The rusting of iron.
2. Combustion of methane.
3. The reaction in an alkaline battery (more than one correct answer)
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For each reaction in the table below, write the chemical formulae of any reactants that will be oxidized in the second column of the table. Write the chemical
formulae of any reactants that will be reduced in the third column.
reaction
JC1, () +2A1()
SC(s) +S()
1₂(0)+ Ma(0)
ZAICI, ()
Cas()
Mal₂ (0)
reactants
oxidized
0
0
0
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0
0
0
X
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Balance the following chemical equation using the smallest, whole-number coefficients:C6H12O6 + O2 " CO2 + H2OThe sum of ALL the coefficients in the balanced equation is
Select one:
a. 22
b. 19
c. 16
d. 17
e. 18
*Just would like the answer, no work needed*
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Imagine yourself lost on an island alone and you are left with just the following scrap
metals. Which items can you use to build 1.5 V battery? Assume that you can use coconuts
as beakers and that seawater is a good electrolyte
Lead bullets
Iron nails
Silver spoons
Aluminum Can
a.iron anode and aluminum cathode
b.aluminum anode and silver cathode
c.silver anode and lead cathode
d.aluminum anode and lead cathode
In gold cyanidation, what is the purpose of adding a strong base?
a. Preven CN- volatilization
b.Neutralize acid from previous processes
c.Improve dissolution rate of gold
d.Retard dissolution of foreign ions
Which of the following form of cyanide is the least toxic?
a.HCN
b.CNO-
C.CN-
d.SCN
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ofiles Tab Window Help
Bb Do - Mathematics X ATM HOMEWORK Modul X
?deploymentid=5735112480241329813180832311&eISBN=9781305862883&id=1707786068&sna
APR
17
MindTap Cengage X G CIO4- + SO37
Use the References to access important values if needed for this question.
name of the
element
oxidized:
Submit Answer
HXeO4 + 6NH3-3N2H4 + Xe+ 3H₂O+ OH-
formula of the
oxidizing
agent:
References
ge in Oxidation Number: This is group attempt 1 of 10
tv
In the above redox reaction, use oxidation numbers to identify the element oxidized, the element
reduced, the oxidizing agent and the reducing agent.
name of the
element
reduced:
formula of the
reducing
agent:
A
☎
W
Q 9
Low Battery
Your Mac will sleep soon u
into a power outlet.
M
Q Search thi
1
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What are the uses of the parts
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Redox reactions occur in many everyday experiences. Three examples of common redox reactions that everyone is familiar with are outlined below. Write the chemical equation for each of these reactions and identify the oxidizing agent and the reducing agent.
Note: If needed, consult a web source to determine the reaction.
a. When silver jewelry or silverware tarnishes, it is reacting with S in the air to undergo a redox reaction.
b. When someone leaves a screwdriver sitting outside and it rusts, the iron in the screwdriver underwent a redox reaction.
c. The process of photosynthesis, which causes green plants to react with sunlight to form oxygen, is an example of a redox reaction.
arrow_forward
How many hours would it take to reduce one mole of Al+3 to aluminum using a current of 22.2 Amps?
A. 0.22 hours
B. 217 hours
C. 1320 hours
D. 3.6 hours
arrow_forward
When an electrochemical cell is constructed, the voltmeter reads a negative number. Select the true statement(s)
A. The electrode hooked up to the negative lead is the cathode.
B. The electrode hooked up to the positive lead is the cathode.
C. The electrode hooked up to the negative lead is the anode.
D. No reaction occurs because it is not spontaneous as constructed.
E. B and C
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Which statement about a cathode in a voltaic cell is NOT correct?
a.
Oxidation occurs at the cathode.
b.
Reduction occurs at the cathode.
c.
Usually the cathode is a metal strip.
d.
In the external circuit, electrons flow toward the cathode.
e.
Chemical species can have their oxidation number decreased at the cathode.
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Cancel
RESET
6. The anodic area of a metal surface is oxidized and loses its electrons to the cathodic
area. At the cathodic area the oxygen reduces and reacts with the oxidized metal to
form metal oxide, so called
a. Cathode
c. Iron
d. Rust
b. Electrolyte
7. When an ionic substance is dissolved in water or melted then the ions are free to
move.
a. True
b. False
8. A process of converting the ions of a compound in a liquid state into their reduced
or oxidiz I state by passing an
: current through
compound.
a. Electrolytes
b. Electrocution
c. Cannot be determined
c. Electrolysis
d. Electricity
#
Done
arrow_forward
Hi please help! Let's consider the combustion of propane, which occurs in gas grills.
What are the products of complete combustion?
What other product can form from incomplete combustion?
What causes incomplete combustion to happen (instead of complete)?
Is combustion a redox reaction or not? Justify your answer.
arrow_forward
Kindly Solve the Question in Attachment!
Don't Spam or Copy from Other Websites
Give Proper Answer with Correct Explanation
All the Best for Solving This Question :)
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In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation
describing this reaction using the lowest whole-number coefficients.
chemical equation: 2H2(g) + O₂(g) → 2H₂O(1)
Identify the oxidizing agent.
hydrogen
water
Incorrect
oxygen
presented by Macmillan Learning
Identify the reducing agent.
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What is one of the advantages of a fuel cell?
a. They are more efficient than combustion.
b. all of the above
c. They can run for a very long time as long as you keep adding fuel.
d. They have lower emission of pollutants than combustion.
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DATA ANALYSIS
Handwritten lab reports are not accepted
SYSTEM #1: 2FeCl3 +2KI 2FeCl₂ + 2KCI + 1₂
1. For System 1 reaction, record your observations below.
2. Did a redox reaction occur? Explain what your observations indicate about the redox reaction. If a reaction
occurred complete questions 3-7.
3. Which atom is oxidized, and what are its initial and final oxidation numbers?
4. Which atom is reduced, and what are its initial and final oxidation numbers?
5. Write the half equation for the oxidation reaction.
6. Write the half equation for the reduction reaction.
I
7. What other ions are in solution, and what are their roles?
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10
Consider the reaction:
H2(g) + Cl2(g) → 2HCl(g)
Hydrogen is getting ______________.
Group of answer choices
oxidized
reduced
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In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction using the lowest whole‑number coefficients.
chemical equation:
Identify the oxidizing agent.
oxygen
water
hydrogen
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Extracting copper from copper oxide is reduction, because oxygen is removed from the metal.
The particle picture below shows what happens to the atoms.
+
>
1. Identify atoms A, B and C and then molecule D.
2. Convert the particle picture into a balanced symbol equation.
3. Which element is oxidised during the reaction? Explain why.
4. Which substance is reduced? Explain why.
5. If a piece of copper is heated the atoms on the surface react with oxygen from the air to form
black copper oxide. Draw a particle picture for this reaction, and write a balanced symbol
equation.
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You have 8.97 moles of CaCl2. How many moles of AgNO3 are required for the reaction to go to completion?
Use the following balanced equation: 2 AgNO3 + CaCl2 --> 2 AgCl + Ca(NO3)2
Select one:
a.
8.97 moles
b.
4.49 moles
c.
17.9 moles
d.
17.94 moles
e.
4.485 moles
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11. a)The diagram shows the apparatus used in electrolysis. Label the diagram using the key terms in
the box.
6 volt d.c. power supply
Anode
Cathode
Electrolyte
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Why is cellular respiration an example of a redox reaction?
O
81°F
Mostly cloudy
Glucose is broken down to produce energy.
ATP is produced.
It is a single transfer of electrons in which compounds are oxidized and reduced.
O
There is a long series of electron transfers in which compounds are oxidized and reduced.
F
3
O Search
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5
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7
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a
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0
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Pls help ASAP on all asked questions
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Related Questions
- The following reactions are Redox reactions that happen quite often in the world around you. Please write down the balanced reaction and identify the element being oxidized and the element is reduced. Doing some online research might be a good idea here. 1. The rusting of iron. 2. Combustion of methane. 3. The reaction in an alkaline battery (more than one correct answer)arrow_forwardFor each reaction in the table below, write the chemical formulae of any reactants that will be oxidized in the second column of the table. Write the chemical formulae of any reactants that will be reduced in the third column. reaction JC1, () +2A1() SC(s) +S() 1₂(0)+ Ma(0) ZAICI, () Cas() Mal₂ (0) reactants oxidized 0 0 0 reactants reduced 0 0 0 Xarrow_forwardBalance the following chemical equation using the smallest, whole-number coefficients:C6H12O6 + O2 " CO2 + H2OThe sum of ALL the coefficients in the balanced equation is Select one: a. 22 b. 19 c. 16 d. 17 e. 18 *Just would like the answer, no work needed*arrow_forward
- Imagine yourself lost on an island alone and you are left with just the following scrap metals. Which items can you use to build 1.5 V battery? Assume that you can use coconuts as beakers and that seawater is a good electrolyte Lead bullets Iron nails Silver spoons Aluminum Can a.iron anode and aluminum cathode b.aluminum anode and silver cathode c.silver anode and lead cathode d.aluminum anode and lead cathode In gold cyanidation, what is the purpose of adding a strong base? a. Preven CN- volatilization b.Neutralize acid from previous processes c.Improve dissolution rate of gold d.Retard dissolution of foreign ions Which of the following form of cyanide is the least toxic? a.HCN b.CNO- C.CN- d.SCNarrow_forwardofiles Tab Window Help Bb Do - Mathematics X ATM HOMEWORK Modul X ?deploymentid=5735112480241329813180832311&eISBN=9781305862883&id=1707786068&sna APR 17 MindTap Cengage X G CIO4- + SO37 Use the References to access important values if needed for this question. name of the element oxidized: Submit Answer HXeO4 + 6NH3-3N2H4 + Xe+ 3H₂O+ OH- formula of the oxidizing agent: References ge in Oxidation Number: This is group attempt 1 of 10 tv In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. name of the element reduced: formula of the reducing agent: A ☎ W Q 9 Low Battery Your Mac will sleep soon u into a power outlet. M Q Search thi 1arrow_forwardWhat are the uses of the partsarrow_forward
- Redox reactions occur in many everyday experiences. Three examples of common redox reactions that everyone is familiar with are outlined below. Write the chemical equation for each of these reactions and identify the oxidizing agent and the reducing agent. Note: If needed, consult a web source to determine the reaction. a. When silver jewelry or silverware tarnishes, it is reacting with S in the air to undergo a redox reaction. b. When someone leaves a screwdriver sitting outside and it rusts, the iron in the screwdriver underwent a redox reaction. c. The process of photosynthesis, which causes green plants to react with sunlight to form oxygen, is an example of a redox reaction.arrow_forwardHow many hours would it take to reduce one mole of Al+3 to aluminum using a current of 22.2 Amps? A. 0.22 hours B. 217 hours C. 1320 hours D. 3.6 hoursarrow_forwardWhen an electrochemical cell is constructed, the voltmeter reads a negative number. Select the true statement(s) A. The electrode hooked up to the negative lead is the cathode. B. The electrode hooked up to the positive lead is the cathode. C. The electrode hooked up to the negative lead is the anode. D. No reaction occurs because it is not spontaneous as constructed. E. B and Carrow_forward
- Which statement about a cathode in a voltaic cell is NOT correct? a. Oxidation occurs at the cathode. b. Reduction occurs at the cathode. c. Usually the cathode is a metal strip. d. In the external circuit, electrons flow toward the cathode. e. Chemical species can have their oxidation number decreased at the cathode.arrow_forwardCancel RESET 6. The anodic area of a metal surface is oxidized and loses its electrons to the cathodic area. At the cathodic area the oxygen reduces and reacts with the oxidized metal to form metal oxide, so called a. Cathode c. Iron d. Rust b. Electrolyte 7. When an ionic substance is dissolved in water or melted then the ions are free to move. a. True b. False 8. A process of converting the ions of a compound in a liquid state into their reduced or oxidiz I state by passing an : current through compound. a. Electrolytes b. Electrocution c. Cannot be determined c. Electrolysis d. Electricity # Donearrow_forwardHi please help! Let's consider the combustion of propane, which occurs in gas grills. What are the products of complete combustion? What other product can form from incomplete combustion? What causes incomplete combustion to happen (instead of complete)? Is combustion a redox reaction or not? Justify your answer.arrow_forward
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SEE MORE QUESTIONS
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Recommended textbooks for you
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Chemistry: The Molecular Science
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ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning