Lab 12 (1)

Oxide % Composition Calcium Oxide (CaO) Phosphate (P2O5) Magnesium oxide (MgO) Silicon Oxide (SiO2) Iron Oxide (Fe,O3) Aluminium Oxide (Al2O3) 48.21 37.77 1.29 0.12 0.09 0.08 Moisture 0.15 Loss on ignition 0.21 From "Bone ash influence on soil consolidation" by G.M. Ayininuola and D. Akinniyi This table displays the chemical make-up of human bones. Below, you can see an example of an amino acid, which is what makes up proteins. Proteins are a major component of human skin. HSe. H,N- HOʻ Structure of selenocysteine, from Wikipedia 8. a. What type of chemical bonding is predominately occurring in bones? b. Using the given information and recalling what we learned about bonding models back in Unit 1, explain how X-rays are able to show us bone damage, even though bones are under our skin.

Mind Tap - Cengage Learning X om/ilrn/takeAssignment/takeCovalent Activity.do?locator=assignment-take me teaching and le X [Review Topics] [References] Use the References to access important values if needed for this question. An 1.11 mol sample of nitrogen gas at a temperature of 10.0°C is found to occupy a volume of 27.5 liters. The pressure of this gas sample is atm. Submit Answer 888 F4 + A FS Retry Entire Group 8 more group attempts remaining Cengage Learning Cengage Technical Support MacBook Air VA DII DD Previous

Mercury (Hg) is present in trace amounts in coal, ranging from 50–200 ppb. Ýour Turn 5.19 mentions that 1.5 million tons of coal can be burned by a single power plant.    Using the formula: C135H96O9NS A. What is the formula mass for this approximation of coal?  ( in grams/mole) B. Calculate tons of mercury released when 1.5 million tons of coal are burned  using on the lower (50 ppb) concentration value for Hg (mercury) contamination

21. ADLC Assignment Booklet A3 Decide whether each statement is true (T) or false (F). Place your answer in the blank space given. Scientific theory states that the atoms in today's plastics were parts of microscopic plants and animals that lived in the oceans millions of years ago. b. Molecules of gasoline have more carbon atoms than do molecules of diesel fuel. c. Subjecting large molecules to cracking is useful because smaller molecules are manipulated more easily in a reaction to produce a desired product. d. Unsaturated compounds form during hydrocarbon cracking because too many hydrogen atoms are available for the number of carbon atoms.

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M Apple Google Disney ESPN Yahoo! Biomedical Careers Program ☆ For the reaction Fe(s) +2HCl(aq)→→→→→FeCl₂(s) + H₂(g) AH° = -7.4 kJ and AS° = 107.9 J/K B Submit Answer Apple ☆ prod03-cnow-owl.cengagenow.com iCloud Yahoo Images Bing Google Wikipedia Facebook Twitter LinkedIn G b COWLv2... b D2L D2L D2L [Review Topics] [References] Use the References to access important values if needed for this question. D2L The maximum amount of work that could be done when 2.08 moles of Fe(s) react at 286 K, 1 atm is Assume that AH° and AS° are independent of temperature. Retry Entire Group 4 more group attempts remaining The Weather Channel C D2L Yelp TripAdvisor M kJ. +

7) The most important reaction that allows our cars to do work is octane (CSH18) combustion 2 C8HI8 + 25 02 à 16 C02 + 18 H20 a) Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STR, what volume of gas do we expect to be produced? b) If the % yield for this combustion reaction is 90%, what is the actual volume? 8) Name two characteristics that describe real gases and not ideal gasses. 9) a) A climber takes a mole of ideal qgas to the top of Mount Everest, where the pressure is 304 torr and the temperature is subzero at -17° C. What is the volume of the gas? b) The gas taken to Mount Everest is oxugen gas. What is the root mean square velocity of gas molecules in that sample of gas? 10.) a) An 8.00L tank at 7.3° C is filled with 24 g of dinitrogen monoxide (N2O) and 8.2 g of sulfur hexafluoride gas (SF6). What is the mole fraction of sulfur hexafluoride? b) What is the ratio between the rates of effusion of sulfur hexafluoride and dinitrogen…

HSC 258 Major Projec X Mind Tap - Cengage Lea X d%3D55750828934189288909969212&elSBN=9781305657571&snapshotld%3D219989 The illustration to the left represents a mixture of iodine ( purple ) and fluorine ( green ) molecules. If the molecules in the above illustration react to form IF3 according to the equation I +3 F2 2 IF3 , the limiting reagent is the number of IF, molecules formed is and the number of atoms/molecules in excess is Submit Answer

Which of the following combinations of chemicals will result in a potentially explosive mixture? Select one: a. SiO2 and CH4(g) b. Sc(NO3)3 and Mg(ClO4)2 c. Ga and O3 d. HF(aq) and Ca3(PO4)2

How many grams of O are present in 1.0 mole of C2H4O2? a.) 16g b.) 53g c.) 60g d.) 32g

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How many moles are represented by 4.0 grams of hydrogen peroxide (H₂O₂)? A. 0.12 moles B. 140 moles C. 4 moles D. 1 mole

Cla Unit 1 Review Answer KEY- Goo X it 1 Quiz #4 Properties of MathX cl.castlelearning.com/Review/CLO/Student/Assignment/Questi Home - Hudl M East Rochest Quizlet Live Quizlet schools.org bookmarks Unit 1 Quiz #4 Pro 1 of 10 Question 1 Review Which statement describes a chemical property of hydrogen gas? 1. Hydrogen gas burns in air. 2. Hydrogen gas is colorless. 3. Hydrogen gas has a density of 0.000 09 g/cm at STP. 4. Hydrogen gas has a boiling point of 20. K at standard pre Standard

5cd_i-5c7IV_IVquz8U4U02epq7z4kBnpYZ5iA/edit & nsions Help EB Ga... estions: 1 2 11 + BIU Key Words: global warming et 3 1. Why is oxygen NOT a greenhouse gas? A 4 > DOE-E X-E greenhouse gas 6 infrared energy 3. The atmosphere on the planet Venus is almost 96 % carbon dioxide. What effect might its concentration of carbon dioxide have on the average surface temperature on Venus? is not a greenhouse gas because it is transparent to infrared light. and greenhouse gasses absorb oxygen infrared radiations. meaning it can not absorb heat. 2. Why is the effect of greenhouse gases in the atmosphere similar to the effect of glass surrounding a greenhouse? Page 3: The Structure of Greenhouse Gases Questions 4. What effect does an increase in the atmospheric carbon dioxide levels (and therefore rising temperatures) have on the amount of water vapor in the atmosphere? Why? 3 7 I 5. Both coal and natural gas can be burned to generate electricity. However, burning natural gas produces about half the…