{
  "id": "4d8032e2-2f3a-563d-8446-ef4328488827",
  "slug": "stoichiometry",
  "title": "Stoichiometry",
  "course": "General Chemistry",
  "questionCount": 15,
  "page": "https://splycr.com/general-chemistry/stoichiometry",
  "data": "https://splycr.com/library/stoichiometry.json",
  "play": "https://splycr.com/?set=4d8032e2-2f3a-563d-8446-ef4328488827",
  "source": {
    "name": "Biology by Bradford",
    "href": "https://www.biologybybradford.com",
    "note": "Written for the splycr library by Biology by Bradford."
  },
  "questions": [
    {
      "number": 1,
      "question": "Ratio of moles of H₂ to NH₃ in N₂ + 3H₂ → 2NH₃?",
      "answer": "3 : 2",
      "wrongOptions": [
        "2 : 3",
        "1 : 2",
        "3 : 1"
      ]
    },
    {
      "number": 2,
      "question": "Moles of O₂ needed to burn 2 mol of CH₄ (CH₄ + 2O₂ → CO₂ + 2H₂O)?",
      "answer": "4 mol",
      "wrongOptions": [
        "2 mol",
        "1 mol",
        "8 mol"
      ]
    },
    {
      "number": 3,
      "question": "Moles of CO₂ made from 3 mol of C₂H₆ (2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O)?",
      "answer": "6 mol",
      "wrongOptions": [
        "3 mol",
        "4 mol",
        "9 mol"
      ]
    },
    {
      "number": 4,
      "question": "Moles of H₂O formed from 0.5 mol of CH₄ (CH₄ + 2O₂ → CO₂ + 2H₂O)?",
      "answer": "1 mol",
      "wrongOptions": [
        "0.5 mol",
        "2 mol",
        "0.25 mol"
      ]
    },
    {
      "number": 5,
      "question": "Mass of MgO made from 12 g of Mg (2Mg + O₂ → 2MgO; Mg = 24, MgO = 40)?",
      "answer": "20 g",
      "wrongOptions": [
        "40 g",
        "10 g",
        "24 g"
      ]
    },
    {
      "number": 6,
      "question": "Mass of CaO from heating 50 g of CaCO₃ (CaCO₃ = 100, CaO = 56)?",
      "answer": "28 g",
      "wrongOptions": [
        "56 g",
        "50 g",
        "22 g"
      ]
    },
    {
      "number": 7,
      "question": "Mass of water formed when 4 g of H₂ burns (2H₂ + O₂ → 2H₂O; H₂ = 2, H₂O = 18)?",
      "answer": "36 g",
      "wrongOptions": [
        "18 g",
        "72 g",
        "9 g"
      ]
    },
    {
      "number": 8,
      "question": "Reactant that is used up first and limits how much product forms?",
      "answer": "Limiting reactant",
      "wrongOptions": [
        "Excess reactant",
        "Catalyst",
        "Product"
      ]
    },
    {
      "number": 9,
      "question": "2 mol of H₂ and 2 mol of O₂ react (2H₂ + O₂ → 2H₂O). Which is in excess?",
      "answer": "Oxygen",
      "wrongOptions": [
        "Hydrogen",
        "Water",
        "Neither"
      ]
    },
    {
      "number": 10,
      "question": "Volume of 0.5 mol of CO₂ at room temperature and pressure (24 dm³ mol⁻¹)?",
      "answer": "12 dm³",
      "wrongOptions": [
        "24 dm³",
        "48 dm³",
        "0.5 dm³"
      ]
    },
    {
      "number": 11,
      "question": "Volume of H₂ from 0.1 mol Mg with excess acid (Mg + 2HCl → MgCl₂ + H₂; 24 dm³ mol⁻¹)?",
      "answer": "2.4 dm³",
      "wrongOptions": [
        "4.8 dm³",
        "24 dm³",
        "1.2 dm³"
      ]
    },
    {
      "number": 12,
      "question": "Mass of product expected from the balanced equation if everything reacts?",
      "answer": "Theoretical yield",
      "wrongOptions": [
        "Actual yield",
        "Percentage yield",
        "Atom economy"
      ]
    },
    {
      "number": 13,
      "question": "Percentage yield when 8 g of product forms but 10 g was expected?",
      "answer": "80%",
      "wrongOptions": [
        "125%",
        "20%",
        "8%"
      ]
    },
    {
      "number": 14,
      "question": "Percentage of the reactants' atoms that end up in the useful product?",
      "answer": "Atom economy",
      "wrongOptions": [
        "Percentage yield",
        "Theoretical yield",
        "Relative formula mass"
      ]
    },
    {
      "number": 15,
      "question": "Atom economy if the useful product's Mr is 46 and the reactants' total Mr is 92?",
      "answer": "50%",
      "wrongOptions": [
        "200%",
        "46%",
        "25%"
      ]
    }
  ]
}