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6 pages
Effects Of Weathering And Erosion In Shaping The Landscape
Running Head; Effects of Weathering and Erosion in Shaping the Landscape Effects of Weathering and Erosion in Shaping the ...
Effects Of Weathering And Erosion In Shaping The Landscape
Running Head; Effects of Weathering and Erosion in Shaping the Landscape Effects of Weathering and Erosion in Shaping the Landscape
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered ...
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered: 24.93 mL Mean deviation: ± 0.13 mL The pipette they used was a 25.00 mL pipette, with a manufacturer’s mean deviation claim
of ± 0.06 mL. a) Is mean deviation a measure of accuracy or precision? i.e. does the mean deviation
reflect how far the result is from the true value (accuracy) or how far the values are
from each other (precision)? b) Comment on this student’s results with respect to accuracy and precision. Question 2 – Titration a) Will the concentration of the sulphuric acid, H2SO4, in the conical flask (receiving
vessel) be the same as that of the sample in the beaker that you collected from the
servery? Does this matter? Why/Why not? b) Calculate a mean (average) value for the titre values you have chosen. Justify any
exclusions you have made. c) The equation for the acid-base neutralisation reaction you perform in each titration is
given below. Balance this equation.
H2SO4(aq) + NaOH(aq) ⇋ Na2SO4(aq) + H2O(l) e) The ratio of the number of moles of H2SO4 to NaOH required for reaction (nacid:nbase)
is given by the balanced equation. Using your balanced equation and the value of
number of moles of NaOH you have just calculated (number of moles = 6.85), what is the number of moles of
H2SO4 in the conical flask?
f) Rearrange the equation n = cxV to calculate the concentration of your H2SO4 solution.
g) Obtain the true value from the servery and compare this to your own experimentally
determined concentration.
Prince George's Community College Mosquito Borne Diseases Paper
Activity 3: Complete the virtual lab – Stopping Mosquito-borne DiseasesDengue Fever discussed in this video is very muc ...
Prince George's Community College Mosquito Borne Diseases Paper
Activity 3: Complete the virtual lab – Stopping Mosquito-borne DiseasesDengue Fever discussed in this video is very much like the now common Zika virus. Research Zika to find out the similarities and differences. What is the major risk of Zika virus?Activity 4: Case StudyCase Study: To Spray or Not to Spray: A Debate over Malaria and DDTDownload and complete the case study.
Project - Understanding Planetary Motion
Johannes Kepler, a 17th Century astronomer and mathematician,
published three laws of planetary motion that improved upo ...
Project - Understanding Planetary Motion
Johannes Kepler, a 17th Century astronomer and mathematician,
published three laws of planetary motion that improved upon Copernicus's
heliocentric model. These laws were made possible by years of accurate
planetary measurement collected by Kepler's predecessor, Tycho Brahe.
Kepler's laws were a radical change from previous astronomical models
for the Solar System which maintained the ancient Greek idea of perfect
circular motion. With the Stellarium planetarium software, we are able
observe the orbit of the planets and test some of his ideas. For this part of the project, use a computer simulation to test
Kepler's laws of planetary motion. Please read through the assignment
background information and follow the steps listed in the lab assignment
instructions. You will be asked to form a hypothesis, state the lab
objective, record your measurements and calculations, and answer each of
the lab questions. Click here to download the instruction document for this piece of the project. Follow the instructions contained within and submit your results as this project deliverable. Submit your assignment with a title page and in APA format.
4 pages
Extraction Lab Report
Extraction is one of the most relevant techniques in organic chemistry, taking advantage of the different solubility of th ...
Extraction Lab Report
Extraction is one of the most relevant techniques in organic chemistry, taking advantage of the different solubility of the compounds in a given ...
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Most Popular Content
6 pages
Effects Of Weathering And Erosion In Shaping The Landscape
Running Head; Effects of Weathering and Erosion in Shaping the Landscape Effects of Weathering and Erosion in Shaping the ...
Effects Of Weathering And Erosion In Shaping The Landscape
Running Head; Effects of Weathering and Erosion in Shaping the Landscape Effects of Weathering and Erosion in Shaping the Landscape
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered ...
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered: 24.93 mL Mean deviation: ± 0.13 mL The pipette they used was a 25.00 mL pipette, with a manufacturer’s mean deviation claim
of ± 0.06 mL. a) Is mean deviation a measure of accuracy or precision? i.e. does the mean deviation
reflect how far the result is from the true value (accuracy) or how far the values are
from each other (precision)? b) Comment on this student’s results with respect to accuracy and precision. Question 2 – Titration a) Will the concentration of the sulphuric acid, H2SO4, in the conical flask (receiving
vessel) be the same as that of the sample in the beaker that you collected from the
servery? Does this matter? Why/Why not? b) Calculate a mean (average) value for the titre values you have chosen. Justify any
exclusions you have made. c) The equation for the acid-base neutralisation reaction you perform in each titration is
given below. Balance this equation.
H2SO4(aq) + NaOH(aq) ⇋ Na2SO4(aq) + H2O(l) e) The ratio of the number of moles of H2SO4 to NaOH required for reaction (nacid:nbase)
is given by the balanced equation. Using your balanced equation and the value of
number of moles of NaOH you have just calculated (number of moles = 6.85), what is the number of moles of
H2SO4 in the conical flask?
f) Rearrange the equation n = cxV to calculate the concentration of your H2SO4 solution.
g) Obtain the true value from the servery and compare this to your own experimentally
determined concentration.
Prince George's Community College Mosquito Borne Diseases Paper
Activity 3: Complete the virtual lab – Stopping Mosquito-borne DiseasesDengue Fever discussed in this video is very muc ...
Prince George's Community College Mosquito Borne Diseases Paper
Activity 3: Complete the virtual lab – Stopping Mosquito-borne DiseasesDengue Fever discussed in this video is very much like the now common Zika virus. Research Zika to find out the similarities and differences. What is the major risk of Zika virus?Activity 4: Case StudyCase Study: To Spray or Not to Spray: A Debate over Malaria and DDTDownload and complete the case study.
Project - Understanding Planetary Motion
Johannes Kepler, a 17th Century astronomer and mathematician,
published three laws of planetary motion that improved upo ...
Project - Understanding Planetary Motion
Johannes Kepler, a 17th Century astronomer and mathematician,
published three laws of planetary motion that improved upon Copernicus's
heliocentric model. These laws were made possible by years of accurate
planetary measurement collected by Kepler's predecessor, Tycho Brahe.
Kepler's laws were a radical change from previous astronomical models
for the Solar System which maintained the ancient Greek idea of perfect
circular motion. With the Stellarium planetarium software, we are able
observe the orbit of the planets and test some of his ideas. For this part of the project, use a computer simulation to test
Kepler's laws of planetary motion. Please read through the assignment
background information and follow the steps listed in the lab assignment
instructions. You will be asked to form a hypothesis, state the lab
objective, record your measurements and calculations, and answer each of
the lab questions. Click here to download the instruction document for this piece of the project. Follow the instructions contained within and submit your results as this project deliverable. Submit your assignment with a title page and in APA format.
4 pages
Extraction Lab Report
Extraction is one of the most relevant techniques in organic chemistry, taking advantage of the different solubility of th ...
Extraction Lab Report
Extraction is one of the most relevant techniques in organic chemistry, taking advantage of the different solubility of the compounds in a given ...
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