Chemistry Investigation 14: ------------------------------------------------- To determine the enthalpy change of reaction for: ------------------------------------------------- Na2CO3(aq) + H2O(l) + CO2(g) → 2NaHCO3(aq) Given: S1— Anhydrous sodium carbonate (Na2CO3) S2— Anhydrous sodium hydrogen carbonate (NaHCO3) A1—Aqueous sulfuric acid (H2SO4)‚ 0.500mol dm-3 Apparatus | Uncertainty | Measuring cylinder | ± 0.5 ml | Electronic Balance | ± 0.001 g | Data logger | ±0.2 ℃ |
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Gold Digging Gold mining is one of the most destructive industries in the world. It can displace communities‚ hurt workers‚ destroy environments and contaminate drinking water. Water and land become polluted with mercury and cyanide which endangers ecosystems‚ animals and people. the health of people and ecosystems. Toxic mine waste contains many dangerous chemicals including arsenic‚ cyanide‚ lead‚ acids‚ merry and petroleum byproducts. Mining companies worldwide dump toxic waste into
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How did the Australian Gold Rush effect Australia’s immigration and multiculturalism? During the gold rush period‚ immigrants from all around the world came to Australia to find wealth and riches in the gold fields. The majority of these immigrants came from England‚ Ireland‚ Scotland‚ Wales‚ America and Germany. But the largest foreign contingent was China with over 40‚000 coming to work in the gold fields. The Chinese worked in large groups with one leader who was in charge. They worked hard and
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Stay Gold By: Julie Pratt In the end of the novel “The Outsiders” by S.E Hinton‚ Johnny Cade’s last words to Ponyboy were “Stay gold‚ Ponyboy. Stay gold…” (pg 148). One way to interpret Johnny’s words would be that he meant for Ponyboy to keep his innocence. Another way would be to say that Johnny meant for Ponyboy to stay true to who he was. It is also possible that he meant for Ponyboy to continue to be a generally good person‚ pure of heart and mind. Johnny’s last words to Ponyboy had a triple
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you make any polygon on the geoboard and tell her both the number of pegs in the interior and the number of pegs on the boundary and her formula will give you the area immediately. Your goal in this POW is to find Frashy’s super formula but tou might want to begin with her friends formulas. 1 Begin with Freddy’s formula a. Find a formula for the area of polygons with no pegs in the interior. The number of boundaries is the In and the Out is the area in the In-Out table. b. Find a different
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beautiful‚ can last forever. Frost says‚ "Nature’s first green is gold‚ her hardest hue to hold‚ Her early leafs a flower‚ but only so an hour‚" meaning that "gold" is considered beautiful and perfect but is the hardest to keep. Gold will only last a short time. The above quote from the poem also means that the best things in life‚ represented by gold‚ can’t last forever as represented by the second line of the poem. The poem "Nothing Gold Can Stay" by Robert Frost holds several meanings that relate beauty
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Cat is out of the bag: KANA and Layoff Gone Awry(A) 1) Who are the key constituents in this case and identify each of their interests? The key constituents in this case are in the table below: Constituents Vicki (VP of Int. and HR) and Bryan Kettle (CFO) Chuck Bay (CEO) and Tom Doyle (COO) Customers Terminated employees and unions Survivor employees Managers The investment Community HRManagement Interests making the layoff process go as smoothly and transparently for the business
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California Gold Rush changed California by creating a larger and more diverse population‚ establishing San Francisco as one of the premier trade and banking cities in the nation‚ and the eruption of mining “boom towns.” By the winter of 1848‚ rumors of gold had drifted eastward across the country‚ but few easterners believed them. The gold discovery needed validation and President James Polk delivered that in early December of 1848. Every family within the nation was discussing gold in the west
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Does the justification matter in the reclaiming of the treasure? Will it affect the overall outcome or restoration of order after the dragon’s death? The works‚ The Hobbit‚ Beowulf‚ and The Volsunga Saga‚ prove that you must be more justified than the dragon when claiming the treasure. The treasure must truly have belonged to you prior to the dragon in order for the treasure to have a positive outcome and improve the current circumstances. That being said‚ in The Hobbit‚ Beowulf and The Volsunga
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else‚ as many other materials do. Hence plastic waste is dangerous to the environment. Plastic carry bags reach the drainage system and this causes clogging especially during the rains. If too much plastic ends up in a lake or a pond‚ it creates a layer that denies oxygen to everything below so that no plant or animal life can survive in that water body. If animals eat plastic bags thrown in rubbish dumps‚ it knots up their intestines and they die painful deaths. If plastic lies on land‚ it
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