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...
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:...
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...
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...
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
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...
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: The Depth of life
by karla mae gacusana
Deprive me with a drop of water and you wash away my right to live. Provide me a sea of it, and the world will swim its richness…
Young as I am, I know and I appreciate the important things in life. I am thankful that I am alive and that I am able...
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...
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!!
lever so that it faces the doorway with the save point fountain. Facing the opposite
doorway walk foreword and to the right, you'll see a ledge. Drop down and wall jump
back and forth to make your way slowly down. Once you get down, drop down to the
ledge below and wall run and jump...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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
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
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...
a woman who is delivering a baby, drops on the floor, they must ‘clean‘ it by water, oil, powder, and comb it. Or else, it will disturb not only the midwife (Mak Bidan/ Mak Dukun), but also the mother and the baby (the baby will not stop crying or fall ill). To save the lives of the mother, the baby...
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...