Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Lab report example chemistry pdf

10/11/2021 Client: muhammad11 Deadline: 2 Day

Final Report

Exercise 1

CHEM 181 DL1 Laboratory Techniques and Measurements

The reason could be atmospheric pressure changes with the higher sea levels, decreasing the degree at which it takes water to boil.

1. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?

100(102-100)/100=2% error

100(99.2-100)/100=-0.8% error

2. While heating two dif f erent samples of water at sea level, one boils at 102°C and one boils at 99.2°C. Calculate the percent error f or each sample f rom the theoretical 100.0°C.

Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 14

Data Table 1: Length Measurements

Data Table 2: Temperature Measurements

Length (cm)

CD or DVD

Key

Spoon

Fork

Length (mm)

CD or DVD

Key

Spoon

Fork

Length (m)

CD or DVD

Key

Spoon

Fork

12

5.5

18

18

120

55

180

180

0.12

0.055

0.18

0.18

Temperature (°C)

Hot from Tap

Boiling

35

Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 14

Boiling for 5 minutes

Cold from Tap

Ice Water - 1 minute

Ice Water - 5 minutes

Temperature (°F)

Hot from Tap

Boiling

Boiling for 5 minutes

Cold from Tap

Ice Water - 1 minute

Ice Water - 5 minutes

Temperature (K)

Hot from Tap

Boiling

Boiling for 5 minutes

Cold from Tap

Ice Water - 1 minute

Ice Water - 5 minutes

85

100

20

2

-1

95

185

212

68

35.6

30.2

308.15

358.15

373.15

293.15

275.15

271.15

Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 14

Data Table 3: Mass Measurements

Estimated Mass (g)

Pen or Pencil

3 Pennies

1 Quarter

2 Quarters, 3 Dimes

4 Dimes, 5 Pennies

3 Quarters, 1 Dime, 5 Pennies

Key

Key, 1 Quarter, 4 Pennies

Actual Mass (g)

Pen or Pencil

3 Pennies

1 Quarter

2 Quarters, 3 Dimes

4 Dimes, 5 Pennies

3 Quarters, 1 Dime, 5 Pennies

Key

Key, 1 Quarter, 4 Pennies

Actual Mass (kg)

Pen or Pencil

4

8

4

12

21

30

7

18

5.6

7.5

5.6

18

22.1

32.3

7.7

24

Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 14

Exercise 2

3 Pennies

1 Quarter

2 Quarters, 3 Dimes

4 Dimes, 5 Pennies

3 Quarters, 1 Dime, 5 Pennies

Key

Key, 1 Quarter, 4 Pennies

0.0056

0.0075

0.0056

0.018

0.0221

0.0323

0.0077

0.024

Density= mass/ volume

Volume= length x width x height

Volume= 3.6 x 4.21 x 1.17= 17.73 cm

Density= 21.3/17.73= 1.20 g/mL

1. An unknown, rectangular substance measures 3.60 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3 g, what is this substance’s density (in grams per milliliter)?

3

Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 14

Density= mass/volume

Volume= mass/ density

Volume= 26.15/19.30= 1.35 mL Au

2. A sample of gold (Au) has a mass of 26.15 g. Given that the theoretical density is 19.30 g/mL, what is the volume of the gold sample?

If you dropped the object into the beaker then the scale would measure the mass of the object instead of the mass of the displaced water and the measurements would be thrown off.

3. What would happen if you dropped the object into the beaker while using the Archimedes’ Principle method instead of submerging the object?

How the magnets density measurement using the Archimedes principles compare to the density measurement using the calculated volume is that the magnets density measurement during the Archimedes was higher than the density measurement using the calculated volume. I think that the Archimedes principle method might be more accurate because with the calculated volume there is more room for error as I made the measurements.

4. How did the magnet’s density cdalculation using the Archimedes’ Principle compare to the density calculation using the direct measurement method? Which technique might be more accurate? Why?

Copyright 2019 - Hands-On Labs | http://holscience.com 7 / 14

Data Table 4: Liquid Measurements

The conclusions I can reach from the simple density analysis is that is could not actually be gold because pure gold is 19.32 g/cm .

5. You are given a small piece of gold colored material and want to determine if it is actually gold. Using the Archimedes Principle you f ind that the volume is 0.40 cm and the mass is 6.0 g. What conclusions can you reach f rom your simple density analysis?

3

3

Water

Mass A: Graduated Cylinder (g)

Volume (mL)

Mass B: Graduated Cylinder with Liquid (g)

Mass B-A: Liquid (g)

Density (g/mL)

Percent Error (%)

Isopropyl Alcohol

Mass A: Graduated Cylinder (g)

Volume (mL)

Mass B: Graduated Cylinder with Liquid (g)

Mass B-A: Liquid (g)

Density (g/mL)

Percent Error (%)

19.3

5

24.4

5.1

1.00

26.4%

19.3

5

23.6

4.3

0.786

22.3%

Copyright 2019 - Hands-On Labs | http://holscience.com 8 / 14

Data Table 5: Magnet - Direct Measurement Method

Data Table 6: Water Displacement Method

Magnet

Mass (g)

Length (cm)

Width (cm)

Height (cm)

Volume (cm )

Density (g/cm )

4.2

2.5

0.5

2.5

3 3.125

3 1.344

Copyright 2019 - Hands-On Labs | http://holscience.com 9 / 14

Data Table 7: Archimedes' Method

Magnet

Mass (g)

Initial Volume of Graduated Cylinder (mL)

Final Volume of Graduated Cylinder (mL)

Object Volume (mL)

Density (g/mL)

Metal Bolt

Mass (g)

Initial Volume of Graduated Cylinder (mL)

Final Volume of Graduated Cylinder (mL)

Object Volume (mL)

Density (g/mL)

4.3

6

6.5

0.5

8.6

8

6

7

1

8

Copyright 2019 - Hands-On Labs | http://holscience.com 10 / 14

Exercise 3

Magnet

Mass (g)

Mass of Displaced Water (g)

Volume of Displaced Water (mL)

Density (g/mL)

Metal Bolt

Mass (g)

Mass of Displaced Water (g)

Volume of Displaced Water (mL)

Density (g/mL)

4.3

121.4

121.4

1

8

121.8

121.8

1

Copyright 2019 - Hands-On Labs | http://holscience.com 11 / 14

Data Table 8: Initial Concentration

1% x V1 = 2% x 2V

0.25 x 10 = 1 x 2V

V2= 0.25 x10/1

V2= 2.5mL

How I would prepare 10 mL of a 0.25% HCl solution if 1% HCl available is dilute the 1% in water to get a less concentrated .25% HCl. Then determine the amount of moles by multiplying 0.01 and .25 which equals 0.0025 moles HCl. Then, you prepare 10 mL containing 2.5 mL of 1% HCl.

1. How would you prepare 10 mL of a 0.25% m/v HCl solution if 1% m/v HCl was available? How much 1% m/v HCl is needed? How much distilled water is used?

The relations between the concentration of the sugar solution and the density of the sugar solution is that the density is a lot higher than the comcentration.

2. From the graph of Density vs. Concentration, created in Graph 1, what was the relationship between the concentration of the sugar solution and the density of the sugar solution?

Copyright 2019 - Hands-On Labs | http://holscience.com 12 / 14

Data Table 9: Solutions

Sugar (C H O )

Mass of Volumetric Flask (g)

Mass of Sugar (g)

Total Volume (mL)

Concentration (% m/V)

12 22 11

19.3

8

0.025

0.92%

Solution Volume (mL)

0 25.00 mL

1 25.00 mL

2 25.00 mL

3 25.00 mL

4 25.00 mL

Solution Mass (g)

0

1

2

3

4

Solution Density (g/mL)

0

1

26.5

25.3

25.4

25.4

25.5

1.06

Copyright 2019 - Hands-On Labs | http://holscience.com 13 / 14

2

3

4

Solution Initial Concentration (% m/v)

0

1

2

3

4

Solution Volume Transferred (mL)

0

1

2

3

4

Solution Final Concentration (% m/v)

0

1

2

3

1.012

1.016

1.016

1.02

0.92%

2.9%

2.9%

2.9%

0

2.5

4.5

3

6

0.925

2.9%

13.05%

Copyright 2019 - Hands-On Labs | http://holscience.com 14 / 14

Graph 1: Density versus Concentration

4

8.7%

17.4%

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Engineering Guru
Quick Finance Master
Finance Professor
Phd Writer
Solution Provider
University Coursework Help
Writer Writer Name Offer Chat
Engineering Guru

ONLINE

Engineering Guru

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$45 Chat With Writer
Quick Finance Master

ONLINE

Quick Finance Master

I have read your project description carefully and you will get plagiarism free writing according to your requirements. Thank You

$29 Chat With Writer
Finance Professor

ONLINE

Finance Professor

This project is my strength and I can fulfill your requirements properly within your given deadline. I always give plagiarism-free work to my clients at very competitive prices.

$29 Chat With Writer
Phd Writer

ONLINE

Phd Writer

I have worked on wide variety of research papers including; Analytical research paper, Argumentative research paper, Interpretative research, experimental research etc.

$47 Chat With Writer
Solution Provider

ONLINE

Solution Provider

I am an academic and research writer with having an MBA degree in business and finance. I have written many business reports on several topics and am well aware of all academic referencing styles.

$32 Chat With Writer
University Coursework Help

ONLINE

University Coursework Help

Being a Ph.D. in the Business field, I have been doing academic writing for the past 7 years and have a good command over writing research papers, essay, dissertations and all kinds of academic writing and proofreading.

$45 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Great chain of being shakespeare - BUS CONT Week 9 Written Assignment - Current risk free rate for capm - Heaven trilogy angela johnson - Research Paper In American Literature I - Organ leader and decision making - Wellmeadows hospital case study normalization - Ode to a large tuna in the market answers - Avk wafer check valve - 7 eugenia street rivett - Telstra mobile broadband plan - Steps to lighting a bunsen burner - Shadow health danny cough exam - Electrical safety first best practice guide 4 issue 5 - Discussion Post - King of bling birmingham - Great western hospital address - How many soldiers died on hacksaw ridge - Poli 330 week 7 quiz - Explain the meanings of total architecture and machines for living - Nonconsequentialists like ross believe that - Bob beck ozone generator - Class Two: Part Two - Essay - POSCI 3 - Steps to writing well with additional readings 10th edition pdf - Aquafresh whitening trays - Plug weld hole size - Informative speech about anxiety - Doubts about doublespeak william lutz thesis - How to write an introduction for comparative essay - Cross county multiplex cinemas nobody's fool - As 2601 demolition checklist - International cruiser uno eu - Advertising campaign assignment - Dead poets society shmoop - Ford times interest earned ratio - Dimensions of emotional intelligence - Accepted value of copper - A tibetan monk leaves the monastery at - What is a pie note - Examples of transparent objects - Historical case study neurological disorder - Paraphrase - Margaret atwood scarlet ibis - Thinking for yourself marlys mayfield free pdf - Cyberstore tpg com au your account - Cisco ise wlc posture redirect acl - Journal article response - Evidence Base in Design - Mgb convertible top snaps - Accounting Information System - University of bc library - Introduction to disk operating system - How to use arules in r - Short paper 3 - No witchcraft for sale answer key - Split ring connector design - 2010 iom report on the future of nursing in healthcare - Nickel and dimed chapter 3 quotes - Disney in france case study answer - In pdm which of the following relationships is rarely used - What is the difference between ignorance and apathy worksheet - WEEK7-DISCUSSION-Enterprise Risk Management - Dunn's auto sales picayune ms - Crisis Communication Plan - Fragile planet organic apple juice - Macy's inventory turnover - Phl 1010 unit v assessment - Ferry timetable cape jervis to kangaroo island - Cpp - Three levels of computer ethics - The pitcher by robert francis - Soap Note CC: “I need to start on birth control, I just don’t know which one to go on as there are so many to choose from.” - Running for school captain speeches - CDO - The epic of gilgamesh study guide - The scholar practitioner's guide to research design - 4076W9D2 - Briefly explain how the upper castes are educated at eton - Carol ann beauty salon brickell - Marc anthony products at dischem - Common toxicity criteria version 5 - What does poetic devices mean - Plato's allegory of the cave painting - Coles team member cover letter - Moodle bl rdi co uk - Pure substances and mixtures worksheet 7.3 answers - Mythbusters jato rocket car mission accomplished - Creative egg drop designs - Case study non profits - Presentation on Threats to the Global Environment - Nickname of anne frank's diary - Why is eggshell a good material for edta to chelate - What is the basic building block of society - Fg throttle body size - What is the convict code - Rv matthews and alleyne 2003 - Journal 7 - The coffee shop social and physical factors influencing place attachment