energy. 2) Both trends are increasing for the most part. There are some exceptions like boron and oxygen in period 2 and aluminum and sulfur in period 3. All of the elements before these ones are stable and it is easier to remove the electron from them than from an electron of boron‚ oxygen‚ aluminum‚ and sulfur. This makes boron‚ oxygen‚ aluminum‚ and sulfur have a lower ionization energy. 3) First‚ electrons are added one at a time moving from left to right across a period. As this happens
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What is Acid Rain? First identified in 1872 in Sweden and studied in the U.S. beginning in the 1950s‚ acid rain is precipitation in the form of rain‚ snow‚ hail‚ dew‚ or fog that transports sulfur and nitrogen compounds from the high atmosphere to the ground. Sulfur dioxide (SO2) and nitrogen oxides (NO‚ NO2) are bi-products from burning fuels in electric utilities and from other industrial and natural sources. These chemicals react with water‚ oxygen‚ carbon dioxide‚ and sunlight in the atmosphere
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during a 100 year period the mayans stopped all research and construction and no one has been able to explain why until recently. Michael Sigl‚ a chemist in Switzerland found that a volcano must have exploded from studying tree rings‚ which he found sulfur particles in. The explosion caused the temperature to drop
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JC1 H2 Chemistry Atomic Structure Tutorial 1. How many protons‚ neutrons and electrons are there in 3+ ion? 2. Write down the electronic configuration of (a) Si (atomic no. 14) (b) Sc (atomic no. 21) (c) Co (atomic no. 27) 3. Which of the following ions contains an unpaired electron? A calcium ion B copper(II) ion C potassium ion D titanium(IV) ion 4. Some isotopes are unstable and decompose naturally. In one type of decomposition‚ a neutron in the nucleus decomposes to form a proton‚ which is
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(chemical reactions of CO2‚ SOx‚ and NOx with water) Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere‚ where they mix and react with water‚ oxygen‚ and other chemicals to form more acidic pollutants‚ known as acid rain Precipitation with
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GajendraUjjenia Rajiv Gandhi Institute of Petroleum Technology Catalysis in Hydrotreating and Hydrocracking
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The Components Of Earth’s Atmosphere And How Our Climate Is Affected By Volcanic Eruptions Introduction The atmosphere is all that lies between us‚ and the vast and unforgiving conditions of space. It absorbs energy from the sun‚ protects us from radiation‚ supports the cycle of water and other chemicals‚ and interacts with Earth’s magnetic fields to give us a climate capable of supporting life. Without it there would be no water‚ no air‚ no life. So we must protect it. But to protect
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questions that follow. INVESTIGATION OF THE EFFECT OF SULPHUR DIOXIDE ON SOYBEAN REPRODUCTION Agricultural scientists were concerned about the effect of air pollution‚ sulfur dioxide in particular‚ on soybean production in fields adjacent to coal-powered power plants. Based on initial investigations‚ they proposed that sulfur dioxide in high concentrations would reduce reproduction in
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glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper (5 cm x 10 cm) - silver nitarate - birthday candle - sulfur - matches Procedure: 1. Place a small amount of wax from a birthday candle into a test tube. Heat gently over a burner flame until the wax melts completely; then allow the sample to cool. Next‚ light the candle‚ secure it to a glass square
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more moles of water or of iron I have more miles of water (54 g = 3 moles H20 ‚ 84g = 1.5 moles Fe) Arrangement of Electrons 1) Draw diagrams to show the electron arrangements to the following elements: Carbon‚ Fluorine‚ magnesium‚ sulfur 2) Write the electron arrangements of the following elements using the format shown above: lithium‚ sodium‚ potassium‚ beryllium‚ magnesium‚ calcium lithium:2‚1 sodium:2‚8‚1 potassium:2
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