Needs answers to questions and several lab tasks and a small elaboration, All information is in the attached file

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Needs answers to questions and several lab tasks and a small elaboration, All information is in the attached file

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1. A balanced equation will show: The total masses of all reactants and products. The same number and type of atoms on each side. The total volume of all reactants and products. A step by step pathway of how reactants are converted into products. 0.5 points QUESTION 2 1. Determine the number of oxygen atoms in the following compound: Cr(PO4)3 1 3 4 12 0.5 points QUESTION 3 1. Balance the following equation by supplying the correct coefficients before each substance. Use a number 1 if no coefficient needs to be placed. For example, the balanced equation 2 H2 (g) + O2 (g) --> 2 H2O (l) should read 2 H2 (g) + 1 O2 (g) --> 2 H2O (l). C4H10 (l) + O2 (g) --> CO2 (g) + H2O (g) 0.5 points QUESTION 4 1. Balance the following equation by supplying the correct coefficients before each substance. Use a number 1 if no coefficient needs to be placed. For example, the balanced equation 2 H2 (g) + O2 (g) --> 2 H2O (l) should read 2 H2 (g) + 1 O2 (g) --> 2 H2O (l). Al (s) + O2 (g) --> Al2O3 (s) 0.5 points QUESTION 5 1. Consider a 10 M HCl solution. If we wanted to make this solution more dilute, we could: Add more water to the solution. Remove some water from the solution. Add more HCl to the solution. Spill some of the solution. 0.5 points QUESTION 6 1. Determine whether the following properties/definitions are characteristic of acids, bases, or salts. Taste bitter A. salts B. bases Ionic compounds composed of cations C. acids other than hydrogen and anions other than hydroxide Can be acidic, basic, or neutral. Generally form solutions with a pH greater than 7 Can be defined as a substance that donates hydrogen ions during a reaction turns litmus red 0.5 points QUESTION 7 1. Classify the following acids and bases as weak or strong. A. weak HCl B. strong KOH HNO3 Ba(OH)2 NH3 HCN 0.5 points QUESTION 8 1. Identify the conjugate base in the following reaction: HC2H3O2 + H2O --> C2H3O2- + H3O+ HC2H3O2 H2O C2H3O2H3O+ 0.5 points QUESTION 9 1. Which of the following is not a major contributor to acid rain? CO2 SO2 NO NaOH 0.5 points QUESTION 10 1. The leading chemical substance produced in the United States is sulfuric acid hydrochloric acid sodium hydroxide calcium carbonate The following virtual lab will explore acids, bases, and pH. Click on the link below to access the virtual lab: https://phet.colorado.edu/sims/html/ph-scale-basics/latest/ph-scale-basics_en.html Once inside: 1. Click on the red button on the dropper (for chicken soup) and fill the beaker to 0.5 L. 2. Next, drag the green pH probe to the beaker, and record the pH of the solution. 3. Determine whether this solution is acidic, basic, or neutral. 4. Now, click on the blue button (to the right), and add enough water to fill the beaker to 0.75 L. What happens to the pH when water is added? 5. Click on the orange button (right bottom) to reset the experiment. 6. Repeat steps 1-5 for the remaining solutions. 7. Copy and paste the following data and questions when you submit your lab report (by clicking on the write submission tab). Data 1. Chicken soup pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 2. Drain cleaner pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 3. Hand soap pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 4. Blood pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 5. Spit pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 6. Milk pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 7. Coffee pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 8. Orange juice pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 9. Soda pop pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 10. Vomit pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? 11. Battery acid pH of solution = acidic, basic, or neutral? What happens to the pH upon the addition of water? Lab questions 1.) Briefly describe the relationship between pH and the acidity/basicity of a solution. 2.) What happens to the pH when water is added to an acidic solution? To a basic solution? 3.) Were you surprised by any of the results? If yes, please explain. 4.) Besides from using a pH meter, what are other ways to determine the pH of a solution? Notes:
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