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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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12
13
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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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reaction
JC1, () +2A1()
SC(s) +S()
1₂(0)+ Ma(0)
ZAICI, ()
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Select one:
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b. 19
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d. 17
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Lead bullets
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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-
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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
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1
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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.
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Assignment: Write a balanced equation for each reaction and determine which substance is oxidized and which substance is reduced (or not) by showing the oxidation numbers.
Solid aluminum oxide combines with solid carbon to form solid aluminum and carbon dioxide gas. This is the beginning of aluminum cans.
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The diagram shows
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A student made the statements
1 to 3 in the picture below.
Which statements are correct?
steel object
copper-
copper(ll) sultate solution
A student made the following statements.
1 The object turns a reddish-brown colour.
2 The copper sulfate solution changes to a paler blue colour.
3.
The copper electrode becomes smaller.
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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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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
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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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If 10.0 moles of hydrogen are reacted with excess oxygen in the hydrogen fuel cell how many moles of water are produced?
A. 20.0 moles
B. 10.0 moles
C. 5.00 moles
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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:
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O hydrogen
Identify the reducing agent.
O hydrogen
water
oxygen
Determine the number of electrons transferred in the balanced chemical equation.
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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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7
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0
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Help
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Assign the oxidation numbers for the following equation.
2H2 + O2 → 2H20
Which reactant is the reducing agent, and which reactant is the oxidizing agent?
Use the paperclip button below to attach files.
* Student can enter max 3500 characters
I U
70°%
P Type here to search
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Explain how you can determine the oxidation number of an unknown element by using the oxidation
number of an element that follows one of the oxidation numbering rules. Use your explanation to
assign oxidation numbers to each element in the following compound: K2C204.
Use the paperclip button below to attach files.
* Student can enter max 3500 characters
В I U
70°F Partly sunny
O
ype here to search
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Balance the following chemical equation using the smallest, whole-number coefficients:Na2CO3 + HCl " NaCl + H2O + CO2The sum of ALL the coefficients in the balanced equation is
Select one:
a. 6
b. 4
c. 8
d. 5
e. 7
**Just would like the answer please, no work needed**
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10. How many moles of O, are required to oxidize 1 mole of CH,CH,COOH according to the reaction
represented below?
_ CH,CH,COOH, + _ Oz) - - CO + _ H,Om
a. 2 moles
b. 5/2 moles
C. 3 moles
d. 7/2 moles
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Table 10.3 : Zinc Bromide Solution
Observations
Test
yellowish
Brown
Results of Test
Anode
Visuel
(tve)
Sole
Cathode
Visuel
(tve)
Bra
Product (s) at Anode:
Product(s) at Cathode:
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- 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
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- Assignment: Write a balanced equation for each reaction and determine which substance is oxidized and which substance is reduced (or not) by showing the oxidation numbers. Solid aluminum oxide combines with solid carbon to form solid aluminum and carbon dioxide gas. This is the beginning of aluminum cans.arrow_forwardThe diagram shows electroplating of a steel object. A student made the statements 1 to 3 in the picture below. Which statements are correct? steel object copper- copper(ll) sultate solution A student made the following statements. 1 The object turns a reddish-brown colour. 2 The copper sulfate solution changes to a paler blue colour. 3. The copper electrode becomes smaller.arrow_forwardKindly 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 :)arrow_forward
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