Module 01 lab 01 – uncertainty, measurements, and significant figures

 

Purpose of Experiment: To become familiar with the virtual lab software, solutions, glassware and tools available. To gain a better understanding of uncertainty, how to take measurements and how to report significant figures properly.

Chemicals and Materials:

Distilled H2O
10 mL Graduated Cylinder
5 mL Pipette
250 mL Beaker
250 mL Flask
Scale
Solid Sodium Chloride
Weigh Boat

Deliverables:

  • Record of all observations.
  • Calculations for conversions, scientific notation, and significant figures.

Instructions for Virtual Lab: Record all observations.

Go to lab page: http://www.chemcollective.org/vlab

  1. From the stockroom in the Virtual Lab, obtain glassware, solutions/solids, and a scale.
  2. Fill the 250 mL Beaker using the realistic tab with approximately 200 mL of H2O.
  3. Using the 5 mL Pipette and the realistic tab, draw up approximately 5 mL of water.
  4. Using the realistic tab, press the hold to pour button until you have dispensed at least 2 mL of water into the graduated cylinder.
  5. Reading the meniscus, record and report with the correct significant figures the volume of liquid dispensed.
  6. Obtain the scale and a 250 mL Flask.
  7. Place the flask on the scale and record the weight of the flask.
  8. Using the “tare” button, tare the weight of the flask, pour the water from the graduated cylinder into the flask and record the weight of the water to the three significant figures.
  9. Remove all items except the scale from the workbench.
  10. Obtain a weigh boat from the stockroom glassware under other.
  11. Place the weigh boat on the scale and record its weight.
  12. Tare the weight of the weigh boat.
  13. Obtain the NaCl (sodium chloride) from the stockroom solutions under solids.
  14. Using the realistic tab, transfer two scoopulas full onto the weigh boat and record the weight of the sodium chloride with three significant figures.

Instructions for Calculations: Complete the following calculations for conversions, scientific notation, and significant figures.

Convert the following:

  1. 23 yd. =___ m
  2. 4 km =____ mi
  3. 78 kg =____ lbs.
  4. 4 g =___ oz.
  5. 5.3 gal =____L

Convert following numbers into or out of scientific notation:

  1. 20,452,384
  2. 3 x 103
  3. 0.03498
  4. 0.00004928
  5. 2.983 x 10 -4

Perform calculations and report answers with correct significant figures. Use scientific notation when needed.

  1. 2.04 + 0.334 =
  2. 20.33 – 0.2 =
  3. 409 x 22.44 =
  4. 3.0/29 =
  5. 29,004 x 2.0 =
  6. (2.6 – 0.67) x 4.0 =
  7. 4.1(3.8 – 0.04)/3.46 =

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more