CHEM101L Chemistry Lab Assignment

Lab 4 Molar Mass CHEM101L

Student Name: Click here to enter text.

Access Code (located on the lid of your lab kit): Click here to enter text.

Pre-Lab Questions:

1. Imagine you are a guest speaker at a kindergarten class and you are asked to explain Avogadro’s number. What would you say and why? Click here to enter text.

2. Draw a diagram explaining the relationship between atoms, moles, and molecules. Insert your drawing with your handwritten name and access code clearly visible.

3. Why is Avogadro’s number referred to as a mole? Click here to enter text.

Experiment 1: Percent Sugar in Bubble Gum

Lab 4 Molar Mass CHEM101L

Table 1: Sucrose Data

Mass of

weight boat

Mass of weigh

boat + un-

chewed gum

Mass of un-

chewed gum

Mass of

chewed gum Mass of sugar

Percent of

sugar

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Post-Lab Questions

1. What is the percent sugar? Show your calculations. Click here to enter text.

2. What is the molar mass of sugar C12H22O11? Show your calculations. Click here to enter text.

3. Convert the mass of dissolved sugar to moles. Show your calculations. Click here to enter text.

4. Convert the moles of sugar to molecules of sugar. Show your calculations. Click here to enter text.

5. Convert molecules of sugar to grams of sugar. Show your calculations. Click here to enter text.

6. Imagine that you used four pieces of gum instead of two. Calculate the number of moles. Show your calculations. Click here to enter text.

7. How does the mass of the saliva alter the experimental data? Click here to enter text.

8. Insert a photo of your completed lab with your name and access code handwritten in the background.

Lab 4 Molar Mass CHEM101L

Distinguished(100%)Proficient

(85%)

Basic

(70%)

Below Expectations

(50%)

Non-Performance

(0%)

Thesis StatementRaises the strongest objection to the thesis presented in the assignment. The objection is strongly grounded in research and logical reasoning.Raises a plausible objection to the thesis presented in the assignment. The objection is mostly grounded in research and logical reasoning.

Raises an objection to the thesis presented in the assignment. The objection is somewhat grounded in research and logical reasoning.Attempts to raise an objection to the thesis presented in the assignment. The objection is minimally grounded in research and logical reasoning.

The objection to the thesis is either nonexistent or lacks the components described in the assignment instructions.
Counter ArgumentProvides a strong, thorough rebuttal to the objection. The rebuttal effectively demonstrates that the thesis can withstand the objection and applies the principles of charity and accuracy.

Provides a rebuttal to the objection. The rebuttal mostly demonstrates that the thesis can withstand the objection and mostly applies the principles of charity and accuracy.

Provides a limited rebuttal to the objection. The rebuttal somewhat demonstrates that the thesis can withstand the objection and somewhat applies the principles of charity and accuracy.

Attempts to provide a rebuttal to the objection; however, the rebuttal minimally demonstrates that the thesis can withstand the objection and does not apply the principles of charity and accuracy.

The rebuttal is either nonexistent or lacks the components described in the assignment instructions.
Conclusion– Provides clear and concise closing remarks that comprehensively summarize the essay. The remarks consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem.

Provides closing remarks that summarize the essay. The remarks mostly consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem. The closing remarks are somewhat unclear.

Provides closing remarks that minimally summarizes the essay. The remarks minimally consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problems. The closing remarks are unclear and/or vague.

Attempts to provide closing remarks that summarize the essay, however, the remarks do not consider the broader controversy and/or further research that could offer additional insight into the moral solution of the business problem. The closing remarks are unclear and vague.The closing remarks are either nonexistent or lack the components described in the assignment instructions.

Written Communication: Context of and Purpose for Writing

Demonstrates methodical application of organization and presentation of content. The purpose of the writing is evident and easy to understand. Summaries, quotes, and/or paraphrases fit naturally into the sentences and paragraphs. Paper flows smoothly.

Demonstrates sufficient application of organization and presentation of content. The purpose of the writing is, for the most part, clear and easy to understand. There are some problems with the blending of summaries, paraphrases, and quotes. Paper flows somewhat smoothly.Demonstrates a limited understanding of organization and presentation of content in written work. The purpose of the writing is somewhat evident but may not be integrated throughout the assignment. There are many problems with the blending of summaries, paraphrases, and quotes. Paper does not flow smoothly in all sections.

Organization and presentation of content are extremely limited. The purpose of the writing is unclear. There is little or no blending of summaries, paraphrases, and quotes. Paper does not flow smoothly when read.