Category Archives: Chemistry

Conventional strain energy in heterocycles; Chemistry


Work type: Annotated Bibliography and research
Subject or discipline: Chemistry
Title: conventional strain energy in heterocycles
Number of sources: 6
Provide digital sources used: No
Paper format: Other: ACs style
# of pages: 6
Spacing: Double spaced
# of words: 1650
# of slides: ppt icon 0
# of charts: 0

I need three sources for Annotated Bibliography ,so the first three pages should be Annotated Bibliography , each page is about a summary, Objective Evaluation and Subjective evaluation for one source. the rest three pages are about research paper contains 6 sources. these are Objective Evaluation : Timeliness: The timeliness of the information.

•When was the information published or posted?
•Has the information been revised or updated?
•Is the information current or too out-of-date for my topic?
•Are all the links functional or are there dead links?*

Relevance: The importance of the information for your needs.
•Does the information relate to my topic or answer my question?
•Who is the intended audience?
•Is the information at an appropriate level (i.e. not too simple or advanced) for my needs?
•Did I look at a variety of sources before deciding to use this one?
•Would I be comfortable using this source for my college research paper?

Authority: The source of the information.
•Who is the author/publisher/source/sponsor?
•Are the author’s credentials or organizational affiliations given?
•What are the author’s credentials or organizational affiliations?
•What are the author’s qualifications to write on the topic?
•Is there contact information, such as a publisher or e-mail address?
•Does the URL reveal anything about the author or source? Examples: .com .edu .gov .org .net*

Accuracy: The reliability, truthfulness, and correctness of the information. •Where does the information come from?
•Is the information supported by evidence?
•Has the information been reviewed by anyone else?
•Can I verify any of the information in another source or from personal knowledge?
•Does the language or tone seem biased? Or is it free of emotion?
•Are there spelling, grammar, typographical, or other errors?

Purpose: The reason the information exists.
•What is the purpose of the information? to inform? teach? sell? entertain? persuade?
•Do the authors/sponsors make their intentions or purpose clear?
•Is the information fact? opinion? propaganda?
•Does the point of view appear objective and impartial?
•Are there political, ideological, cultural, religious, institutional, or personal biases?
don’t feel as if you need to address each criteria as a checklist. Use the criteria that are appropriate for your source. When relevant, address such things as bias or lack of bias, outdated material or current material, and author’s point of view.
Subjective evaluation: Include a summary of the relevance of the source to your research topic or question. How will the source contribute to your research, and how useful will it be? Does it offer a unique perspective? Does it offer a contradictory viewpoint to another source?

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EG 101 Project-Water Filter; Chemistry


EG 101 Project

Build and Test a Sand Filter for Treating Water

Work type: Report
Subject or discipline: Chemistry
Title: Water Filter
Number of sources: 0
Provide digital sources used: No
Paper format: MLA
# of pages: 3
Spacing: Double spaced
# of words: 825
# of slides: ppt icon 0
# of charts: 0
Paper details:
can you show the scientific ways to do this trial.
Also i attached some trials that did on the lab by 6 groups.
Also i want you to show the relation between flow rate , turbidity , time , the amount of sand. i do not want you to show the relation by graphs but i want it by words please.
Again i do not want graphs please.

 

EG 101 Project

Build and Test a Sand Filter for Treating Water

Objective

Evaluate the effectiveness of a sand filter to treat (purify) pond water, based on water turbidity and flow rate (filtration time).

Laboratory procedure

  1. Build model sand filter
    1. Empty the bottle of water issued
    2. Cut off the bottom of the bottle (be careful!)
    3. Turn the bottle upside down so the top is now the bottom
    4. Put a cotton ball in the bottom
    5. Add a coffee filter to the outside and secure with a rubber band
    6. Add layers of clean sand, gravel, and cotton balls to the inverted water bottle (each group should choose a different sand layer depth, 1-inch, 1.5-inch, 2-inch, 2.5 inch, 3-inch…and any other media–record the depth of each media layer).
  2. Add the first 500 mL of pond water
  3. Collect a sample of filtered water near the end of the 500 mL draining through the filter and measure turbidity and flow rate
    1. Demonstrate turbidity measurement (spectrophotometer)
    2. Demonstrate flow rate measurement (volume per time)
  4. Add another 500 mL (total of 1000 mL filtered) and repeat step 3 near the end of the 500 mL draining through the filter
  5. Add another 500 mL (total of 1500 mL filtered) and repeat step 3 near the end of the 500 mL draining through the filter
  6. Record all turbidity and filtration rate numbers

How to determine turbidity

  • Turn turbidity meter on (“Power”)
  • Press “Enter”
  • Press “Enter” for the default method
  • Add clean DI (deionized) water to a clean turbidity vial
  • Put the vial in the meter and press “Zero” (this is your “blank”)
  • Remove the blank
  • Add your water “sample” to a clean vial
  • Put the vial in the meter and press “Read”
  • Record the turbidity and remove the sample
  • Empty sample into sink and clean with DI water; shake excess water out

 

How to determine filtration rate

  • Put the filter over a clean beaker
  • Start recording the time it takes to fill the beaker to a known volume (20 mL)
  • Record the time it takes to filter 20 or 40 mL of pond water
  • X mL pond water / X minutes = flow rate (mL/min)

Lab report should have the following sections and information

Introduction

Why is it important to filter water that will be used for drinking water?

Introduce sand filters and how they work

Objectives (to compare turbidity and flow rate of different sand filters)

Methods

How to make a homemade sand filter

Include pictures

Results

Include all class results

Compare the results using graphs (professional quality)

Plot Turbidity (y-axis) vs sand-layer depth (x-axis)

Plot Flow Rate vs sand-layer-depth

Plot Turbidity vs volume of pond water filtered

Plot Flow Rate vs volume of pond water filtered

Discussion

What combination of sand, gravel, and cotton balls produced the best results?

What depth of sand produced better turbidity and flow rate?

What happened to turbidity and flow rate as more pond water was filtered?

Summary and Recommendations (for building a high quality sand filter)

Conventional strain energy in heterocycles


Work type: Annotated Bibliography and research
Subject or discipline: Chemistry
Title: conventional strain energy in heterocycles
Number of sources: 6
Provide digital sources used: No
Paper format: Other: ACs style
# of pages: 6
Spacing: Double spaced
# of words: 1650
# of slides: ppt icon 0
# of charts: 0
Paper details:
I need three sources for Annotated Bibliography ,so the first three pages should be Annotated Bibliography , each page is about a summary, Objective Evaluation and Subjective evaluation for one source. the rest three pages are about research paper contains 6 sources. these are Objective Evaluation : Timeliness: The timeliness of the information.

•When was the information published or posted?
•Has the information been revised or updated?
•Is the information current or too out-of-date for my topic?
•Are all the links functional or are there dead links?*

Relevance: The importance of the information for your needs.
•Does the information relate to my topic or answer my question?
•Who is the intended audience?
•Is the information at an appropriate level (i.e. not too simple or advanced) for my needs?
•Did I look at a variety of sources before deciding to use this one?
•Would I be comfortable using this source for my college research paper?

Authority: The source of the information.
•Who is the author/publisher/source/sponsor?
•Are the author’s credentials or organizational affiliations given?
•What are the author’s credentials or organizational affiliations?
•What are the author’s qualifications to write on the topic?
•Is there contact information, such as a publisher or e-mail address?
•Does the URL reveal anything about the author or source? Examples: .com .edu .gov .org .net*

Accuracy: The reliability, truthfulness, and correctness of the information. •Where does the information come from?
•Is the information supported by evidence?
•Has the information been reviewed by anyone else?
•Can I verify any of the information in another source or from personal knowledge?
•Does the language or tone seem biased? Or is it free of emotion?
•Are there spelling, grammar, typographical, or other errors?

Purpose: The reason the information exists.
•What is the purpose of the information? to inform? teach? sell? entertain? persuade?
•Do the authors/sponsors make their intentions or purpose clear?
•Is the information fact? opinion? propaganda?
•Does the point of view appear objective and impartial?
•Are there political, ideological, cultural, religious, institutional, or personal biases?
don’t feel as if you need to address each criteria as a checklist. Use the criteria that are appropriate for your source. When relevant, address such things as bias or lack of bias, outdated material or current material, and author’s point of view.
Subjective evaluation: Include a summary of the relevance of the source to your research topic or question. How will the source contribute to your research, and how useful will it be? Does it offer a unique perspective? Does it offer a contradictory viewpoint to another source?

Finally use simple words and american spelling

I upload 4 souces now and after a hour i will upload extra, use the first three sources for Annotated Bibliography and all six sources for the research paper

Environmental pollutant: Mercury


Work type: Written Report
Subject or discipline: Chemistry
Title: Environmental pollutant: Mercury
Number of sources: 5
Provide digital sources used: No
Paper format: MLA
# of pages: 1
Spacing: Single spaced
# of words: 550
# of slides: ppt icon 0
# of charts: 0
Paper details:
– You need to submit a report summarizing the sources transport and fate (including chemical reactions) of mercury released into the environment.
– Try to do it a little more than 1 page.
Comments from Support Team:

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