Experiment 38 Pre - Lab Notes And Agenda - University Of Texas Rio Grande Valley - Pre-lab Explanation On The Process.

537 words - 3 pages

EXP 38: Qua. NH4+, Mg2+, Ca2+, Cu2+
➢ Experiment 38
· Skip parts A and B (NO FLAME TESTS)
· Only doing parts C-F
· Start warm/hot water bath in fume hoods incase needed later.
· Groups must grab one known/reference solution and one unknown (write letters down)
· ▪ One lab partner will do experiment with known/reference solution.
· ▪ Other partner will do experiment with unknown to compare with known.
· All blanks must be filled out excluding first two flame tests.
Part C – Fume Hood
Preparing Sample
➢ 5 mL in a 100mL beaker on a wire gauze with Bunsen burner under and heat until moist residue (condensation starts) DON’T LET IT EVAPORATE COMPLETELY. Add 1-2 mL of D.I. Water
Confirmatory test
➢ Moisten a red litmus paper with water, add 1-2 mL of 6M NaOH to solution and suspend litmus above the solution. Litmus paper changing from red to blue confirms presence of NH4+
Part D – Fume Hood
Reducing Copper II ion
➢ 5 mL in a 150 mm test tube, polish 1 cm Zn strip (with steel wool) and place it into the solution. Let stand for 10-20 minutes. Decant solution and save for part E.1 DO NOT THROW AWAY
In our case, remove solution and leave behind the zinc (now copper metal with excess zinc). Can use pipette.
➢ Wash solid with a minimum of 3 portions of deionized water and disc...

More like Experiment 38 Pre - Lab Notes And Agenda - University Of Texas Rio Grande Valley - Pre-lab Explanation On The Process.

Reformation Of Copper Through The Copper Cycle - Texas A&m University; Chem Lab 111 - Essay

1073 words - 5 pages ... Reformation of Copper Through the Copper Cycle Authors: Lauren Yarborough* and Alex Farish; Chemistry 112 Section 505. Introduction: Copper is a very important element due to both its chemical and physical properties but has its down sides when it comes to being earth-friendly. Since copper isn’t biodegradable, it just accumulates over time. In this experiment, both my lab partner and I looked at the chemical reactions of copper as it underwent ...

Lab Report 4 - Chocolate Cookie Experiment - Prevention 1 - Lab Report

450 words - 2 pages ... lab is to practice everything we have learned in all our previous labs and lectures, also on all of the inter dental products available for all types of patients that have specific needs. · To compare pH levels and BFS sheets from previous labs to see if there are improvements. · To practice oral hygiene assessments by flossing and recording a BFS sheet on a student for the first time. Findings: (2) · Who were you working with? -Working on a ...

Observational Studies - Process Of Social Learning - South University Research Methods Lab - Essay

8469 words - 34 pages ... whether infants in the initial-end (object) condition actually benefited from additional information about the object's initial state, cross-experiment comparisons were made between the initial-end (object) condition and the end (object) condition from Experiment 1A. The results showed that there were no group differences on any of the tasks either at the first act or in the 20-s response period; all t(38) < 1. Discussion In Experiment 1B ...

Paper On Water Cup Inversion Experiment - Grade 10 Science - Lab Report

673 words - 3 pages ... knowledge that less weight means less force that will push the paper off the cup but was taken by surprised after doing the experiment. Therefore, this data proves my hypothesis wrong because the time of the paper to fall off the cup is not faster when the volume of water increases but is opposite, which is much slower as the volume increases. Applications and Extensions: Air pressure, which makes the paper stick on the cup, affects humans in their ...

Experiment 4 And 5 For Chem 117 - Chem 117 - Lab Report

1726 words - 7 pages ... Summary The purpose of Experiment 4 was to determine the effects of concentration on the amount of light transmitted through aqueous solutions. The general procedure used in this experiment was to first prepare an undiluted sample of copper sulfate by obtaining two clean cuvettes. One of the cuvettes was used as a blank sample filled with deionized water which served as a solvent, and on the other cuvette, it was rinsed out with 0.5 mL of the ...

Lab Report - Sunflower Oil Experiment - Northwestern Geography 101 - Geography Class Experiment

2349 words - 10 pages ... USC ID: 8870 LAB SECTION: 13148 1 Effects of Sunflower Oil on Callosobruchus maculatus Oviposition Introduction The cowpea (Vigna unguiculata) is an herbaceous legume that is as a major source of food in the warm regions of Africa, Asia, and the Americas 1-3. Serving as an important crop in distribution channels throughout the world, the cowpea is also a major source of income for farmers and vulnerable populations in these regions 1-3 ...

August 29, 2018 - Pre-colonial History 1490-1590 - History 1301 - Notes

3345 words - 14 pages Free ... wants to fight people of Jamestown. Natives loses the war due to lack of weapons (generation wars, keeps pushing Indians back into wilderness) · [Pequots Exterminated in New England by 1640] - colonies move into connecticut river valley to kill 700 Pequots to take their land, hundreds escaped, and many sold as slaves · [Metacom’s War (1675) - New England and Wampanoags]Wampanoags between Plymouth and Boston since day 1, they focused on adapting ...

Development Of Pre-dried And Blended Lime Mortars For The Ready-mix Market

2747 words - 11 pages ... and water are then added to form the mortar. This kind of lime mortar, known as non-hydraulic, sets very slowly through the process of reaction with the carbon dioxide in the air (Boynton,1980).The speed of set can be increased by using impure limestones in the kiln, to form a hydraulic lime that will set on contact with water. Another alternative is the use of a pozzolanic material, such as calcined clay or brick dust, which is added to the mortar ...

The Transformation Of The Monster - Pre-ib English II - Essay

1017 words - 5 pages Free ... Truman Jessica Truman Pre-IB English II Period 1 25 May 2018 The Transformation of The Monster In the novel, Frankenstein, Mary Shelley develops the character of the monster as a unnatural creature. The monster is described to have a complicated life as he is created by the hands of Victor Frankenstein. Victor isolates himself from his family and friends as he desired to discover the creation of life. Through many trial and errors, he is able ...

Lab Report On Lakes And Health Of Rivers - AP Environmental - Lab Report

584 words - 3 pages ... the pH of water should be 7, which is exactly what the pH of the Rose River was when tested. The dissolved oxygen, saturation, nitrate, and phosphate levels were slightly low but still in the ideal range for a healthy river to host a variety of species throughout. From the analysis of all this data collected, we were able to confirm our hypothesis is healthy. Conclusion: This Lab has allowed the students who visited the Rose River a view on what ...

Morality - The Pre-existing Doctrine

1620 words - 7 pages ... Morality; The Pre-existing and Universal CodeMorality: A doctrine or system of moral conduct; particular moral principles orrule of conduct.To say that modern morality consists in accepting the standard of one's age is tosuggest that human morality changes with the passing of time. This statement is justunacceptable. Morality is not something of a fad. It should not go through trends likeclothes or popular music, morality is the foundation in ...

A Historical Analysis On The Study Of Optics From Pre-socratic Times Through The Age Of Newton. By Adam R

4219 words - 17 pages ... , continued his valued research, and in 1703 he was elected as President of the Royal Society, a position he retained until his death in 1727.Although Newton developed theories on the refraction of light through a prism as early as 1666, and developed the idea for the reflecting telescope in 1668, he did not publish any of his work on optics until he was back in Cambridge, and he had secured his position at the University. Perhaps he was waiting until ...

Pre-columbian Culture With An Emphasis On The Aztecs, Mayans, And Incas - Tolsia High School And Spanish - Assignment

734 words - 3 pages ... eyes. They cause you to sink deeper and deeper in the sea you are drowning in. I used to be able to walk around and not smell his scent but now it’s like that’s all I can smell. I can’t describe it except it’s him. I find so much pain and comfort in it. He could have been the love of my life but I was never enough for him from the start. I was a toy for him then he got bored and it was time to move on. I’m tired of laying on the ground cracked ...

The Effect Of Facial Configuration And Facial Expressions On Facial Recognition - Psychology - Lab Report

2094 words - 9 pages ... 1 Running Header: FACIAL RECOGNITION 2 FACIAL RECOGNITION The Effect of facial configuration and facial expressions on facial recognition Ali Haider Keele University Abstract Facial recognition is an ability which is vital to maintaining successful social interaction and behaviour. Previous research indicates that factors such as facial configuration and facial expressions significantly impact facial recognition ability. This study aims to ...

The Effects Of Smoking On Lung Tissue - Biology - Lab Report

2559 words - 11 pages ... slides of both normal lung and bronchogenic carcinoma were also observed and drawn to assist with the study. After completing the experiment, the mean beat frequency was calculated for each variable using both trials from each student in the lab. A bar graph was then created using these averages to display the data. The standard error was also calculated for each average and plotted onto each bar on the graph. ResultsD. Perklic The data graphed in ...