South CHM1020 Week 6 Lab Assignment

Question # 00620186
Course Code : CHM1020
Subject: Chemistry
Due on: 12/05/2020
Posted On: 12/05/2020 05:07 AM
Tutorials: 1
Rating:
4.9/5
Question Dot Image

CHM120 General Chemistry I Lab

Week 6 LAB Assignment

Week 6 Assignment – Part A

Multiple Choice:

1) The law of conservation of energy states that ________.

A) the energy of the reactants and products in a chemical reaction are always equal

B) all chemical reactions are reversible

C) energy can be created, but not destroyed

D) energy cannot be created or destroyed

2) Which of the following energy quantities is equivalent to 578 J?

A) 5.78 × 105 kJ                                 C) 0.138 kcal

B) 138 kcal                                           D) 1.38 × 105 kcal

3) Which of the following energy quantities is equivalent to 11.9 kcal?

A) 1.19 × 105cal                 C) 49.8 kJ

B) 49.8 J                                                D) 2.84 × 103 kJ

4) Which of the following energy quantities is equivalent to 258 Cal?

A) 258 cal                                             C) 1080 kJ

B) 1080 J                                               D) 6.17 × 104 kJ

5) Which quantity represents the largest amount of stored energy?

A) 10 grams of fat

B) 10 grams of carbohydrate

C) 10 grams of protein

D) 5 grams of carbohydrate plus 5 grams of protein

E) 5 grams of protein plus 5 grams of fat

6) Which bond is the strongest?               

A) H–Br                                                                C) H–F

B) H–Cl                                                 D) H–I

7) Which bond is the weakest?

A) H–Br                                                                C) H–F

B) H–Cl                                                 D) H–I

8) Which term correctly describes a reaction in which the energy of the products is higher than the energy of the reactants?

A) Oxidation-reduction                 C) Exothermic

B) Endothermic                                 D) Combustion

9) Consider the reaction: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g), where ΔH = –531 kcal. Which statement concerning this reaction is true?

A) Heat is absorbed.

B) The bonds formed in the products are stronger than the bonds broken in the reactants.

C) The products are higher in energy than the reactants.

D) The reaction is endothermic.

Short Answer / Problem Solving (Show your work):

10) A chemical reaction requires 31.39 kJ. How many kilocalories does this correspond to?

11) A peanut butter and jelly sandwich contains 9.00 g of fat, 6.00 g of protein, and 25.0 g of carbohydrate. How many Calories does this sandwich provide?

12) Consider the reaction, C2H4(g) + H2(g) → C2H6(g), where ΔH = –137 kJ. How many kilojoules are released when 3.5 mol of C2H4 reacts?

13) Consider the reaction, C2H4(g) + H2(g) → C2H6(g), where ΔH = –137 kJ. How many kilojoules are released when 55.3 g of C2H4 reacts?

14)  Watch the following video and complete the calculation to determine the specific heat of the cadmium metal:  https://www.youtube.com/watch?v=8gHFaL2990U

Week 6 Assignment – Part B

Multiple Choice:

1)  An equilibrium constant with a value of 8.0 × 106 indicates that at equilibrium ________.

A) the reactants are favored

B) the products are favored

C) approximately equal concentrations of reactants and products are present

D) there are more reactants present than products

2)  Which K value below is consistent with an equilibrium system in which the reactants are favored?

A) K = 1

B) K = 1.8 x 103

C) K = 3.7 x 10–8

D) K = 500

3)  Which statement about catalysts is NOT true?

A) A catalyst increases the rate of a chemical reaction.

B) A catalyst lowers the activation energy of a chemical reaction.

C) A catalyst lowers the ΔH of a chemical reaction.

D) A catalyst is recovered unchanged in the reaction it catalyzes.

4)  Which of the following is ALWAYS necessary for a chemical reaction to occur between two reactants, A and B?

A) Equal amounts of A and B must be present

B) A and B must be present in the same physical state

C) The reaction must be carried out at a temperature higher than room temperature

D) A and B must collide with the proper orientation and with a certain minimum amount of energy

In each of the following questions, identify which way (to the left or to the right) does equilibrium shift to relieve the described applied stress:

5)  Consider the following reversible reaction at equilibrium: CO(g) + Cl2(g) ? COCl2(g). If chlorine gas is added to the equilibrium system, how is the stress relieved

6)  Consider the following reversible reaction at equilibrium: C6H12O6 (aq) + 6 O2(g) ? 6 CO2(g) + 6 H2O(l).  If oxygen gas is removed from the equilibrium reaction vessel, how is the stress relieved?

7)  Consider the following reversible reaction at equilibrium: C6H12O6 (aq) + 6 O2(g) ? 6 CO2(g) + 6 H2O(l).  Given that this reaction is exothermic, if heat is added to the equilibrium system, how is the stress relieved?

8)  Label each identified lettered component of the energy diagram for the arbitrary chemical reaction below:

Problem Solving (Show your work):

9)  What is the symbolic expression for the equilibrium constant for the reaction:

2 C2H6(g) + 7 O2(g) ? 4 CO2(g) + 6 H2O(g)?

10)  What is the gas phase chemical reaction that corresponds to the equilibrium constant expression shown below?

11)  Consider the reaction: N2(g) + O2(g) ? 2 NO(g). If [N2] = 0.520 M, [O2] = 0.0662 M, and [NO] = 0.00956 at equilibrium, calculate the value of K and describe the physical/chemical interpretation of this K value.

K=(0.00956)^2/(0.520)(0.0662)

K=9.139X10^-5/0.03442

12) Watch the following video that illustrates a series of experimentsthat demonstrate Le Chatelier’s principle:https://www.youtube.com/watch?v=ZOYyCTvLa9E

In this video, you will observe several examples of external stresses that act upon the equilibrium chemical reaction:

Fe_aq^(+3)+SCN_aq^(-1)?Fe(SCN)_aq^(+2)

Each stress will serve to either add or remove reactant or product.

A)  Describe what happens when iron nitrate or potassium thiocyanate (reactant) are added to the control tube? Describe your observation in the context of Le Chatelier’s principle.

B)  Describe what happened when sodium hydroxide was added to the control tube?  Does the addition of sodium hydroxide add or remove a reactant or product?  If so, clearly state the effect of adding sodium hydroxide and how equilibrium shifts to relieve this stress.

C)  Similarly, describe what happened when potassium chloride was added to the control tube?

D)  Next, describe what happened when silver nitrate was added to the control tube?

E) Lastly, describe what happens when Mercury (II) Nitrate was added to the control tube?

 

Dot Image
expertguy Posted By :
Questions: 34513 Tutorials: 33884
Tutorials for this Question

South CHM1020 Week 6 Lab Assignment

Tutorial # 00618877
Posted On: 12/05/2020 05:30 AM
Feedback Score: Not rated yet!
Purchased By: 2
expertguy
Posted By:
Questions:
34513
Tutorials:
33884
Report this Tutorial as Inappropriate
Tutorial Preview
The solution of South CHM1020 Week 6 Lab Assignment...
Attachments
LAB_6_Assignment.docx (156.5 KB)
LAB_6_Assignment_1.docx (36.99 KB)

Great! We have found the solution of this question!

Related Questions
South CHM1020 Week 9 Lab Assignment
CHM120 General Chemistry I Lab Week 9 LAB Assignment Lab 9 Assignment Review of acids/bases and acid-base neutralization: https://www.youtube.com/watch?v=n9wUdgxCLMQ 1.   & …
South CHM1020 Week 8 Lab Assignment
CHM120 General Chemistry I Lab Week 8 LAB Assignment Solubility (Fill in the blank/Short answer) (See CHM 1010 for Solubility Course Material)          …
South CHM1020 Week 3 Lab Assignment
Week 3 Assignment 1.            Classify each example of molecular art as a compound or element.  Moreover, where applicable, specify whi …
South CHM1020 Week 7 Lab Assignment
CHM120 General Chemistry I Lab Week 7 LAB Assignment Week 7 Assignment A.            Watch Boyle’s Law and answer questions perta …
South CHM1020 Week 6 Lab Assignment
CHM120 General Chemistry I Lab Week 6 LAB Assignment Week 6 Assignment – Part A Multiple Choice: 1) The law of conservation of energy states that ________. A) the energy of the r …
South CHM1020 Week 5 Lab Assignment
CHM120 General Chemistry I Lab Week 5 LAB Assignment Part A Objective                 In today’s lab, we w …
South CHM1020 Week 4 Lab Assignment
Week 4 Assignmenta, b, and c Atomic Structure, Chemical Bonding, Lewis Structure, and 3D Molecular Shape Objectives In this lab, you will apply valence bond theory to draw appropriate Lewis s …
Recent Questions
How do people learn in later years and what type of educational
How do people learn in later years and what type of educational activities can be offered to aging individuals? In this assignment, you will write a brief article suitable for use in a fictional onlin …
Counselling Deaf Clients in Canada - Socio-cultural and demographic
Counselling Deaf Clients in Canada. A. Socio-cultural and demographic background - In this section, include descriptive information about the specific cultural group that you have researched, such …
Project One Planning Document First Draft
Project One Planning Document First Draft Overview You have identified an issue in the natural sciences and developed an  initial research question. In Modules Three and Four, you will prac …
Psychology - Describe the schema you might form about
Psychology Question Assignment #1: Schemas. Visit www.amazon.com and find a product that is of interest to you. Read two conflicting reviews for the product. 1) Describe the schema you might for …
PSYC450 Family Systems Theoretical Analysis
PSYC 450 Family Systems Theoretical Analysis Create a 12-15 narrated presentation about Theoretical Analysis in family systems. Each slide requires 1-2 minutes of voice narration. You have to add A …
HUS320 Final Project: Crisis Intervention Plan and Reflection
HUS 320: Final Project: Crisis Intervention Plan and Reflection Learning Objectives: Design Comprehensive Crisis Plans Task: Imagine a complex crisis scenario (for example, a community affected by …
Psychology - One of the more controversial issues
Psychology Central Texas College One of the more controversial issues in the study of psychology has been the mind-body problem. Consequently, scholars have argued for a very long time about how th …
Psychology - Ethical Appropiateness, Do you believe testing
Psychology: Ethical Appropiateness Respond to the following  1. Do you believe testing can be conducted in a fair and unbiased manner? Why or why not? 2. What are factors that need to be c …
Personality Theories in the Psychodynamic Tradition
Personality Theories in the Psychodynamic Tradition [ Before beginning work on this discussion, read the chapter in your textbook that coincides with your assigned theorist (below). In addition, re …
Psychology - Summarize the key assumptions and assertions
Psychology Question This assignment is intended to prompt you to examine the ways in which gender-based attitudes and beliefs affect support for specific social policies. You will continue to exami …