Chemistry of Materials

I need all of the answers correct + I will post the question and also I will uploead them In word file CHEM 1010For full credit you must show all work in calculations!A French exchange student has a height of 1.60 m.How many significant figures are in this measurement? (1 points)Calculate and express the height of the student in the usual American way using feet and inches. (1 inch = 2.54 cm). (3 points)A gasoline tanker transports about 11,000 gallons of fuel (2 sig figs). What mass of gasoline is in a full tanker? (Density of gasoline = 0.75 kg/L, 1 L = 1.057 quart, 4 quarts = 1 gallon) (3 points)A candlestick weighing 26 ounces is made of brass composed of 65% copper and 35% zinc.What is the mass of the candlestick in kilograms? (1 kg = 2.205 pounds) (3 points) (1 kg = 2.205 pounds, 1 pound = 16 ounces)What mass of zinc is in this candlestick? (2 points)a.       What mass of brass for candlesticks could be made from 155 kg of copper? (2 points)Which of the terms element, compound, or mixture is correctly used for A, B, and C in the following sentence. (3 points).Minor constituents of the {A} that constitutes our atmosphere include the {B} argon and the {C} carbon dioxide.A:B:C:5.  Match each element with its symbol from this list: C, Ca, Cu(3 points)CopperCalciumCarbon6.       18.2 g of zinc reacts with sulfur to produce 27.0 g of zinc sulfide as the only product.a.       What mass of sulfur must have reacted with zinc? (1 point)b.       What Law of chemistry did you use to make the determination in part a? (1 point)c.       If 1.8 kg of zinc sulfide were decomposed, how much zinc could be produced, assuming none is lost in the process? (3 points)d.       What Law of chemistry did you use to make the determination in part c? (1 point)7.       Use the periodic table to answer the following questions. (1 point each)a.       What is the atomic number for the element boron?b.       What is the atomic weight of the element iron?c.       What is the name of the noble gas in the first period?d.       What is the name of the group 15 (5A) element in the third period?e.       How many electrons are in a neutral magnesium atom?f.        How many neutrons does an atom of carbon‐14 (14C) have?8.       A neutral sulfur atom has 16 electrons.a.       Write the full electron configuration for a neutral sulfur atom (2 points)b.       How many valence electrons does a neutral sulfur atom have? (1 points)c.       Draw a Lewis dot symbol for a neutral sulfur atom (1 point)d.       What is the charge on a sulfide ion? (1 point)9.       Cesium is an element in group 1 with symbol Cs.a.       What is the charge on a cesium ion? (1 point)b.       What is the formula of cesium sulfide? (2 points)10.   Mercury vapor lamps emit violet light with a wavelength of 436 nm.a.       What is this wavelength in meters? Answer in scientific notation. (2 points)b.       What is the frequency (in hertz, Hz = per second) of light of this wavelength? (3 points) (Speed of light = 2.998 x 108 m/s)11.   Rock 103 broadcasts at 102.7 MHz (megahertz, mega = 106). Calculate the energy of a single photon of this electromagnetic radiation. (Planck’s constant = 6.626 x 10‐34 J.s) (3 points)12.   Halothane, a common general anesthetic with formula C2HBrClF3, has a boiling point of 50oC.a.       What is 50oC in Fahrenheit? (2 points)b.       Use the atomic weights given on the periodic table to determine the formula weight of halothane in unified atomic mass units. (3 points)c.       Calculate the percentage by mass of fluorine in halothane. (2 points)13.   Explain the difference between a scientific law and a scientific theory. (2 points)14.   Explain the difference between a compound and a homogeneous mixture of elements using nitrogen, oxygen, and nitrous oxide (N2O) to illustrate your answer. Nitrous oxide is commonly known as laughing gas and is sometimes used as an anesthetic in dental surgery. (3 points)

Unit VII Research Paper OSHA has identified four categories of hazards that account for more than 50% of all construction fatalities: • Falls—(36.5%) • Struck by object—84 (10.1%) • Electrocutions—71 (8.6%) • Caught-in/between—21 (2.5%) The assignment is

Unit VII Research PaperOSHA has identified four categories of hazards that account for more than 50% of all construction fatalities:·         Falls—(36.5%)·         Struck by object—84 (10.1%)·         Electrocutions—71 (8.6%)·         Caught-in/between—21 (2.5%)The assignment is to write a research paper involving one of these four construction hazard categories. You may narrow your topic down to a more specific type of accident within the major category. I choose to focus on falls, more specially falls from ladders. When writing the paper, consider the following questions: 1.    What are the common causative factors?2.    What does data indicate?3.    What are the effective proven corrective measures?Remember that a significant aspect of any research paper is the summary analysis by the writer of that research (in this case, you).The submission must be a minimum of three pages in length, not including the title page or reference page. A minimum of three scholarly reference sources must be used from the CSU Online Library. Scholarly sources include:·        Peer-reviewed journal articles·        Safety reference books and textbooks, and·        Other publications by safety professionals and organizations (print or online)Note that,,,, and similar broad-based Internet sites are not considered scholarly sources. Use government and professional safety-related sources, such as,,,, and Contact your professor if you have any questions about the validity of a reference source. APA format is required. Be sure to use in text citations for direct quotes and paraphrased information.Information about accessing the Blackboard Grading Rubric for this assignment is provided below.

Immediately Required Work. Easy Language. No Plagiarism. 7-8 hours

Students will submit an essay utilizing APA format for referencing sources.There will be a file in course documents with sources that may be referenced. The essay will address the model of Community Oriented Policing and how it can be used as an overall management philosophy for occupational safety.3-4 PagesAttached is a rubric.Grading Matrix Week 2 EssaysWeek 2 OnlineSLO: 1. Student will be able to discuss the application of Crosby’s Zero Defects Philosophy to safety                management.          2.  Students will be able to apply the elements of Community Oriented PolicingWritten CommunicationPROGRAM ASSESSMENT RUBRIC

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Fe2O3 + 3C → 2Fe + 3CO; how many grams of C are needed to react with 16.5 g Fe2O3? Chemistry Assignment Homework Help1. In the following reaction:  Fe2O3 + 3C → 2Fe + 3CO;how many grams of C are needed to react with 16.5 g Fe2O3?2. Give an example of a physical change and chemicalchange.3.  A sampleof nitrogen (N2) has a volume of 50.0 L at a pressure of 760 mmHg.What is the volume of the gas when the pressure changes to 1500 mmHg if thereis no change in temperature.4. Calculate the molarity (M) of 4.0 g of KOH in 2.0L of solution.5.  Indicate whetherthe following solutions are acidic, basic or neutral.  a. [H3O+]= 6.0 x 10-12 M  b. [H3O+]= 1.4 x 10-4 M