presence of Ag+, Hg22+, and Pb2+
G2-1. Oxidation of Sn2+ and Precipitation of Group 2
Place 7 drops of "known" or "unknown" solution in a dish. Add 4 drops of 3% H2O2 and 4 drops of 2M HCl. Then boil the solution over the flame of your burner. If the ormation of brown areas on the bottom...
number of ways to save water, and they all start with you.
#2 When washing dishes by hand, don't let the water run while rinsing. Fill one sink with wash water and the other with rinse water.
#3 Some refrigerators, air conditioners and ice-makers are cooled with wasted flows of water. Consider upgrading...
World Water Day 3/22/2011
10 Ways to Save Water in the Home: 1. Keep a pitcher of water in the refrigerator instead of running the tap for cold drinks. This way, every drop goes down you and not the drain. 2. If you shorten your shower by a minute or two, you'll save up to 150 gallons per month...
is covered with water - the wonder liquid of life . Yet,today the world is facing a water crisis which will only worsen with time as the freshwater resources around the world dwindle drop by drop. With more than a billion people around the world lacking access to safe drinking water and over two million...
wasteful use of water
Water is a crucial natural resource. Without water, there would be no life on Earth.Water also affects our health, lifestyle, and economic well being. Wise water use can help people to save money on water, sewer, and energy bills. It helps to reduce the demand on water treatment and...
are best and well known alternatives of gasoline car.
Electronic car save electricity in battery to move car.
Many companies are working on hydrogen as a fuel. The Concept of hydrogen car is to input water and electrolysis the water to make hydrogen and oxygen as bi product in the car. The hydrogen will...
Irrational use of water resources -
Water is the most important element of any creature’s life. A person can survive weeks without any food, but none can survive 3 days without any water.
People waste water in their homes without even realizing it. We have become so accustomed to have a 24 hour...
and lead to fatal complications if surgery is not performed. In the United States, gallstone removal surgery is performed approximately 500,000 times each year. An alternative to surgery involves dissolving gallstones in vivo by administering bile acids orally or by injecting methyl-tert-butyl ether directly...
round-bottomed flask, a water cooled reflux condenser, and a gas trap containing 1 M NaOH. The gas trap can be omitted if you under a fume hood.
2. Weigh 72.0 mmol of your assigned alcohol (1-butanol or 2-butanol) into the round-bottomed flask.
3. Cool the flask in ice water and under the hood cautiously...
Analysis of Hard Water
The purpose of this laboratory exercise is to demonstrate the properties of alkalii and
alkaline earth (elements from the first two columns of the periodic table) salts in aqueous
solutions and to draw conclusions regarding which group of metal...
Protecting Our Nations Water Supply
Imagine when you wake up tomorrow and there is no running water to take a shower, brush your teeth, or even have a cold drink. In today’s society, we have been experiencing an extreme drought and it is progressively getting worse and worse every day. We as Americans...
of copper and do the following chemical reactions: 1. Dissolve the copper metal and make copper (II) ion: When nitric acid is added to copper metal, each copper atom gives 2 electrons to the 2 nitrogens in nitric acid: Molecular equation: Cu(s) + 4HNO3(aq) à 2NO2 (g) + Cu(NO3)2 (aq) + 2H2O(l) Ionic Equation:...
1) A hydrosphere in physical geography describes the combined mass of water found on, under, and over the surface of a planet. The total mass of the Earth’s hydrosphere is about 1.4 × 1024 grams, which is about 0.023% of the Earth’s total mass. Around 2 × 1019 grams of this is the Earth’s...
person in the world has a different thumbprint. there are no two people alike, at all, in the whole world! GoD has a reason for doing that! because each and every one of us has our unique purpose in the world.”
how amazing is that?? it sounds sooo simple, but if you think about it, totoo!!
with donors and acceptors of the blood, it transfer for leukemia and thalasemia patients, new born and cancer patients and so many cases blood bank save their lives.
Tests that are carried in this department:
1- Some tests, which included donated free of diseases, serology tests
2- blood grouping
Each one is as unique as can be.
I wonder if raindrops ever get lonely. They fall through the sky, hit the ground, and spread out.
They're surrounded by one another, but are they together? Do they think of themselves as part of a whole? Do they think themselves separate beings?
I don't think...
9 disposable dishes
1. Label 7 of the dishes with the names of the following products: Sulfur, Iron, Sodium Bicarbonate, Sodium Chloride, Sugar, Sand, and Magnesium. Place small samples of each in the appropriate dishes.
2. Examine each sample with a magnifying...
A. Extraction of Catalase
1. Peel potato
2. Cut into cubes
3. Mass 50g
4. Measure out 50ml of cold distilled water in blender
5. Add crushed ice into blender (small amount)
6. Add the potato cubes into the blender
7. Turn on blender on high for 30 seconds
drinks, play games and pay their bill at the table while dining. Currently, they are located in 1,200 locations and serve approximately 6 million guests each month. In a quote from their website, Ziosk is “Revolutionizing the experience and economics of casual dining” (Ziosk, 2013). By mid 2014, they are...
Three experiments were completed to determine the quality of water that had been contaminated, soiled, and to determine the differences between the water that comes from a kitchen sink and the elegantly bottled water that is conveniently sold in the store. Using various Earth materials (sand...
emitting its maximum radiation in the shortest wavelength:
a human body
beach on a hot day
electric stove on high
8) explain each of the following observations:
People in hot climates tend to wear white clothes
because light clothes have a higher albedo reflect the light
deaths each year. MRSA is another strain of a staph infection that was once labeled the flesh
eating disease. “Invasive MRSA infections that began in the hospitals declined 28% from 2005 through 2008” (CDC, 2011). The drop in deaths is due to the preventions that each hospital puts into...
Objectives (in Course Documents) are not a required assignment, but they are designed so the student can better organize and study the major material from each chapter that will be covered on the chapter tests. In some chapters there are significant portions of the chapter that will not be on the tests. The...
Easy Ways to Conserve Water
Don’t let it run.
We have all developed the bad habit of letting the faucet run while wait for the shower to warm up, while we brush our teeth, or while wait for a cold glass of water. Keeping a pitcher of water in the refrigerator or turning the faucet off while we brush...
of a carboxylic acid) is soluble in water. The structure of a soap molecule is represented below: O || CH3-CH2-CH2- CH2-CH2-CH2-CH2- CH2-CH2- CH2-CH2- CH2-CH2- CH2-CH2- C-O− Na+ Non-polar hydrocarbon chain (soluble in nonpolar substances) ionic end (soluble in water)
Detergents are structurally similar...
Water is a natural resource essential for life and while our planet is made up by 70% water, the reality is that not all is profitable and in truth, which can be used in many cases is being misused , which makes it likely that soon have trouble getting drinkable water. For this resource may continue...
money is made. Market places like phaonix Dallas l.a Reno have strong purchasing power. There iz strong infrastructure like the inter state highway. Each city has an international airport such as LA San Fran Dallas and Houston. Long beach carpus christi LA San Francisco and Houston are sea ports which...
and the reaction has been known for centuries. Traditionally, soaps were made from animal fat and lye (NaOH). (Lye was traditionally made by pouring water through wood ashes.) An example of a saponification reaction is shown below.
WATER IS PRECIOUS
Water is precious, so we should not waste it and make efforts to save it.
It s about learn manners of living.
As is said - Water, water everywhere but not a drop to drink
There are so many people here on Earth who go thirsty, forget water for other uses.
Though water is...
NaHCO3(s) + NH4+ (aq) Cl! (aq)
When heated to 300 °C, the sodium hydrogen carbonate decomposes to form sodium carbonate, carbon
dioxide, and water.
2 NaHCO3(s) ==> Na2 CO3(s) + CO2(g) + H2 O(g)
The crude product obtained from this thermal decomposition is called soda ash, which is primarily...