Calculate the [Fe3+] in a 0.25 M solution of Fe2(SO4)3? 9. Calculate the [Na+] in a 0.55 M solution of sodium acetate. (Write the proper formula for sodium acetate first). 10. Calculate the [Na+] in a 0.55 M solution of sodium carbonate. (Write the proper formula for sodium carbonate first.) 11. Calculate the [Na+] in a 0.55 M solution of sodium phosphate. (Write the proper formula for sodium carbonate first.) 12. 300 mL of 0.500 M NaCl is mixed with 400 mL of 0.200 M HCl. Calculate the final
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Road salt‚ also called rock salt‚ is sodium chloride‚ chemically combined with NaCl. Na is the chemical abbreviation for sodium and Cl is the abbreviation for chloride. Table salt that we use is exactly the same chemical. The US Environmental Protection Agency has set limits on allowable levels of chloride in water but not sodium. In high concentrations both sodium and chloride can be harmful to aquatic organisms. Sodium is the primary concern for humans‚ as it can be harmful to people with high
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T200 Date Class Name Date Class Name CHAPTER Section 15.1 continued 10. As sodium chloride dissolves in water‚ what happens to the sodium and chloride ions? 15 The sodium and chloride ions are separated and surrounded by the water molecules. 11. Explain the orientation of the water molecules around the sodium ions and chloride ions. STUDY GUIDE FOR CONTENT MASTERY CHAPTER 15 STUDY GUIDE FOR CONTENT MASTERY Solutions Section 15.1 What are solutions? In your textbook
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Report Introduction Mummification is an ancient Egyptian method which is a natural or deliberate process intended to dehydrate the body to preserve it. They done this because they believed that if a body was left to rot then it would destroy their soul‚ so they believed that the body needed to be intact to serve as host for the soul. So they preserved bodies so they could use them in the afterlife‚ where the Egyptians believed they would make a journey to another life. To start to mummify a body
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HKDSE Chemistry – A Modern View 1 (SAMPLE) Suggested Answers (Coursebook) |Chapter 1 The fundamentals of chemistry | |Class Practice |1 | |Chapter Exercises |3 | |Chapter 2 The atmosphere
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6 did not. Not many fruits and vegetables contain preservatives simply because they come from nature. One of the items contained Sodium Benzoate‚ a small percentage of people are extremely sensitive to sodium benzoate and can experience asthmatic attacks and other allergic reactions when they take in the preservative. A more normal problem is the combination of sodium benzoate and citric acid and ascorbic acid. When these ingredients mix‚ they form benzene‚ a cancer-causing chemical linked with leukemia
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molar mass is 62.1 g/mole. What is its molecular formula? 5. Name the following: a) Ca(OH)2 b) KCN c) HClO4(aq) d) FeSO4 e) Na2O f) SF6 g) MgSO4 ( 2H2O h) Na2O2 6. What are the formulas of the following compounds? a) sodium sulfite b) potassium permanganate c) calcium sulfide d) aluminum hydroxide e) mercury (II) phosphate f) tetraphosphorus trisulfide g) nitrous acid 7. Which of the following is not an example of a chemical change? a) converting gasoline
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Experiment 2 – Identification of Inorganic Solids Jesse Galina CHM 101 Lab Monday October 1‚ 2012 Unknown Solid – 2 Identifying my cation was rather easy because of the color of the powder when it was first given to me. It was pinkish/slight red when solid and when it was grounded up even further. This observation ruled out every cation except for some hydrated Co (II) salts. After being dissolved in water‚ the solution turned pink which agrees with the statement that the cation was Co
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carbonate from the mixture. In the second reaction we use the product of the first reaction (CaCl2) and change it back to calcium carbonate (CaCO3) by mixing CaCl2 with potassium chloride (2KCl). Objective To separate the components of mixture of sand‚ sodium chloride and calcium carbonate. Materials and Equipment 1. Two beakers 2. Experimental mixtures 3. Distilled water 4. Funnel 5. Filter paper 6. Evaporating dish 7. Buchner funnel 8. Weighing machine 9. Conical flask 10. Hydrochloric acid(HCl) 11
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According to the table A in the procedure‚ it stated that for formulation 1‚ we were using Sodium Carbonate with sodium chloride as the alkaline salt solution while formulation 2 with Soda Ash with sodium chloride and formulation 3 with Potassium Carbonate with sodium chloride . However for formulation 4‚ we were not using any alkaline solution to make it become as the control product and only used sodium chloride. According to the result in table 1‚ we found that the highest moisture content of
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